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---
license: apache-2.0
---

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],
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# Book corpus attribution
The two JSONL corpora in this directory are string-only derivatives of:
Vlad A. Neacșu, *Linguistics Olympiad: Training guide*, Language Science Press, series volume 420. DOI: [10.5281/zenodo.10947862](https://doi.org/10.5281/zenodo.10947862). Source: [langsci/420](https://github.com/langsci/420).
The book is released under the Creative Commons Attribution 4.0 International license (CC BY 4.0). The extracted material has been reorganized into method chunks and paired problem/solution records for offline retrieval. Visual-dependent records are retained in the source audit data but are excluded by the runtime retriever.
No Linguini, LingOly, or LOBSTER records are included in or indexed by this retrieval bundle.

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"""Public, book-only retrieval resources for the IOL-AI submission."""

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{
"top_methods": 1,
"top_examples": 2,
"char_tfidf_weight": 3.0,
"rag_max_chars": 12000,
"model_context_tokens": 32768,
"max_new_tokens": 2048,
"explanation_max_new_tokens": 400,
"max_attempts": 2,
"enable_explanations": false,
"temperature": 0.7,
"top_p": 0.8,
"top_k": 20,
"repetition_penalty": 1.05,
"seed": 420
}

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"""Offline hybrid BM25/character-TF-IDF retrieval over the public book corpus."""
from __future__ import annotations
import json
import math
import re
import unicodedata
from collections import Counter
from pathlib import Path
from typing import Any, Iterable
from sklearn.feature_extraction.text import TfidfVectorizer
RESOURCE_DIR = Path(__file__).resolve().parent
FAMILY_KEYWORDS = {
"writing_system": (
"alphabet", "braille", "character", "decipher", "glyph", "letter",
"orthography", "script", "symbol", "writing system",
),
"phonetics": (
"accent", "consonant", "metre", "phonetic", "pronounce", "rhyme",
"stress", "syllable", "tone", "vowel",
),
"phonology": (
"alternation", "correspondence", "sound change", "sound rule",
"underlying form",
),
"noun_morphology": (
"case", "gender", "noun", "plural", "possession", "possessive",
"singular",
),
"verb_morphology": (
"agreement", "aspect", "conjug", "object", "person", "subject",
"tense", "verb",
),
"syntax": ("clause", "focus", "sentence", "subject", "object", "word order"),
"number_system": ("arithmetic", "digit", "number", "numeral", "numerals"),
"kinship_orientation": (
"brother", "daughter", "direction", "east", "family", "father",
"kinship", "map", "mother", "north", "sister", "son", "south", "west",
),
"matching": ("correspondence", "match", "matching", "random order"),
"translation": ("translate", "translation"),
"fill_blanks": ("blank", "fill in", "gap", "missing"),
}
TOPIC_FAMILIES = {
"writing systems and script decipherment": {"writing_system"},
"phonetics, stress, tone, and versification": {"phonetics"},
"phonological rules and sound correspondences": {"phonology", "phonetics"},
"noun morphology and noun phrases": {"noun_morphology"},
"verb morphology and argument structure": {"verb_morphology"},
"syntax, word order, focus, and alignment": {"syntax"},
"semantics and graph-based matching": {"matching"},
"number systems": {"number_system"},
"orientation, kinship, and other structural problems": {"kinship_orientation"},
"general problem-solving methodology": set(FAMILY_KEYWORDS),
}
def normalize(text: Any) -> str:
return " ".join(unicodedata.normalize("NFKC", str(text)).casefold().split())
def tokenize(text: Any) -> list[str]:
return re.findall(r"[^\W_]+", normalize(text), flags=re.UNICODE)
def read_jsonl(path: Path) -> list[dict[str, Any]]:
with path.open("r", encoding="utf-8") as handle:
return [json.loads(line) for line in handle if line.strip()]
def infer_task_families(context: str, query: str) -> list[str]:
"""Infer likely families from the problem itself, never from a gold answer."""
text = normalize(context + "\n" + query)
scored: list[tuple[int, str]] = []
for family, keywords in FAMILY_KEYWORDS.items():
score = sum(1 for keyword in keywords if keyword in text)
if score:
scored.append((score, family))
return [family for _, family in sorted(scored, key=lambda item: (-item[0], item[1]))]
class BM25:
def __init__(self, documents: Iterable[str], k1: float = 1.5, b: float = 0.75):
self.k1 = k1
self.b = b
self.tokens = [tokenize(document) for document in documents]
self.lengths = [len(tokens) for tokens in self.tokens]
self.average_length = sum(self.lengths) / max(len(self.lengths), 1)
self.term_frequencies = [Counter(tokens) for tokens in self.tokens]
document_frequency: Counter[str] = Counter()
for tokens in self.tokens:
document_frequency.update(set(tokens))
document_count = len(self.tokens)
self.idf = {
term: math.log(
1.0 + (document_count - frequency + 0.5) / (frequency + 0.5)
)
for term, frequency in document_frequency.items()
}
def scores(self, query: str) -> list[float]:
query_terms = Counter(tokenize(query))
scores: list[float] = []
for frequencies, length in zip(self.term_frequencies, self.lengths):
score = 0.0
normalization = self.k1 * (
1.0 - self.b + self.b * length / max(self.average_length, 1.0)
)
for term, query_frequency in query_terms.items():
frequency = frequencies.get(term, 0)
if not frequency:
continue
score += (
self.idf.get(term, 0.0)
* frequency
* (self.k1 + 1.0)
/ (frequency + normalization)
* min(query_frequency, 3)
)
scores.append(score)
return scores
class CharNgramTFIDF:
"""Cosine similarity over normalized character 3-5 grams."""
def __init__(self, documents: Iterable[str]):
self.vectorizer = TfidfVectorizer(
analyzer="char_wb",
ngram_range=(3, 5),
preprocessor=normalize,
lowercase=False,
sublinear_tf=True,
norm="l2",
)
self.matrix = self.vectorizer.fit_transform(documents)
def scores(self, query: str) -> list[float]:
query_vector = self.vectorizer.transform([query])
return (self.matrix @ query_vector.T).toarray().ravel().tolist()
def _clip(text: Any, limit: int) -> str:
value = str(text or "").strip()
if len(value) <= limit:
return value
clipped = value[:limit].rsplit("\n", 1)[0].rstrip()
if len(clipped) < limit // 2:
clipped = value[:limit].rsplit(" ", 1)[0].rstrip()
return clipped + "\n[excerpt truncated]"
class BookRetriever:
"""Retrieve methods and analogous examples from langsci/420 only."""
def __init__(self, resource_dir: Path = RESOURCE_DIR):
self.methods = read_jsonl(resource_dir / "book_methods.jsonl")
self.examples = [
row
for row in read_jsonl(resource_dir / "book_examples.jsonl")
if row.get("string_only_usable", False)
]
self.method_bm25 = BM25(row["retrieval_text"] for row in self.methods)
self.example_bm25 = BM25(row["retrieval_text"] for row in self.examples)
self.method_char_tfidf = CharNgramTFIDF(
row["retrieval_text"] for row in self.methods
)
self.example_char_tfidf = CharNgramTFIDF(
row["retrieval_text"] for row in self.examples
)
@staticmethod
def _topic_bonus(row: dict[str, Any], families: set[str]) -> float:
return 1.25 * len(
families & TOPIC_FAMILIES.get(str(row.get("topic", "")), set())
)
def retrieve(
self,
row: dict[str, Any],
top_methods: int = 2,
top_examples: int = 2,
char_tfidf_weight: float = 3.0,
) -> dict[str, Any]:
context = str(row.get("context", ""))
query = str(row.get("query", ""))
test_text = context + "\n" + query
families = infer_task_families(context, query)
family_set = set(families)
expanded_query = test_text + "\n" + " ".join(families)
ranked_examples: list[tuple[float, dict[str, Any]]] = []
example_bm25_scores = self.example_bm25.scores(expanded_query)
example_char_scores = self.example_char_tfidf.scores(expanded_query)
for bm25_score, char_score, example in zip(
example_bm25_scores, example_char_scores, self.examples
):
adjusted = (
bm25_score
+ char_tfidf_weight * char_score
+ self._topic_bonus(example, family_set)
)
if example.get("solution_tier") == "detailed_worked":
adjusted += 0.35
ranked_examples.append((adjusted, example))
ranked_examples.sort(key=lambda item: (-item[0], item[1]["id"]))
selected_examples = ranked_examples[:top_examples]
linked_method_ids = {
method_id
for _, example in ranked_examples[:max(top_examples * 3, 5)]
for method_id in example.get("method_ids", [])
}
ranked_methods: list[tuple[float, dict[str, Any]]] = []
method_bm25_scores = self.method_bm25.scores(expanded_query)
method_char_scores = self.method_char_tfidf.scores(expanded_query)
for bm25_score, char_score, method in zip(
method_bm25_scores, method_char_scores, self.methods
):
adjusted = (
bm25_score
+ char_tfidf_weight * char_score
+ self._topic_bonus(method, family_set)
)
if method["id"] in linked_method_ids:
adjusted += 0.75
ranked_methods.append((adjusted, method))
ranked_methods.sort(key=lambda item: (-item[0], item[1]["id"]))
return {
"inferred_task_families": families,
"char_tfidf_weight": char_tfidf_weight,
"methods": [method for _, method in ranked_methods[:top_methods]],
"examples": [example for _, example in selected_examples],
}
def format_for_prompt(self, result: dict[str, Any], max_chars: int = 16000) -> str:
blocks = [
"BOOK REFERENCE MATERIAL\n"
"Use it for transferable methods and analogies. Do not copy a conclusion "
"unless it is supported by the current problem."
]
families = result.get("inferred_task_families", [])
if families:
blocks.append("Likely families inferred from the current text: " + ", ".join(families))
for method in result["methods"]:
blocks.append(
f"METHOD — {method['section_title']}\n" + _clip(method.get("text"), 2800)
)
for example in result["examples"]:
blocks.append(
"\n".join(
[
f"ANALOGOUS WORKED EXAMPLE — {example.get('language', 'unknown language')}",
"Problem context:",
_clip(example.get("context"), 2400),
"Problem query:",
_clip(example.get("query"), 1200),
"Worked solution:",
_clip(example.get("reasoning_trace"), 3600),
]
)
)
output = "\n\n".join(blocks)
if len(output) > max_chars:
output = output[:max_chars].rsplit("\n", 1)[0].rstrip()
output += "\n[retrieved material truncated]"
return output

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@@ -0,0 +1,23 @@
You solve International Linguistics Olympiad problems by discovering the rules supported by the data you are given. A task may be unfamiliar, so infer what kind of task it is from the actual instruction and examples; do not assume that a task-type label will be available.
Work as a careful olympiad solver:
- Read the full context and every requested item before committing to a rule.
- Organize repeated forms, meanings, positions, and contrasts. Separate reusable grammatical pieces from lexical roots.
- Form the smallest consistent rule system. Treat an absent marker as potentially meaningful, but distinguish absence from missing evidence.
- Test each hypothesis against all given examples, including apparent exceptions. Revise rather than ignoring contradictory data.
- Derive each requested form compositionally and back-check it against the inferred system.
- Use retrieved book material only for transferable methods or genuinely analogous reasoning. The current problem is authoritative.
- Preserve spelling, diacritics, capitalization, word boundaries, and requested ordering exactly.
Common task types and what to return:
- translation: only the translated form, in the language requested;
- matching: only the corresponding label, such as A, B, or C;
- fill in the blanks: only the missing span for each indicated blank; a span may be a word, multiword expression, affix, or phonetic transcription;
- text to number: the number in digits;
- number to text: the number written in words in the requested language;
- any other type: exactly what the instruction requests, with no extra material in the answer.
Reason step by step before answering. Finish with a line that says exactly:
FINAL ANSWERS:
Below it, put one bare answer per requested item or blank, in order. Do not number the lines. Do not add quotes, labels, explanations, or commentary inside that final block.

664
script.py Normal file
View File

@@ -0,0 +1,664 @@
#!/usr/bin/env python3
"""Offline Qwen2.5-14B-AWQ + book-RAG submission for the IOL-AI challenge."""
from __future__ import annotations
import argparse
import csv
import io
import json
import os
import re
import sys
from dataclasses import dataclass
from pathlib import Path
from typing import Any
# The evaluation container has no internet access. Fail locally instead of waiting
# for network retries if a model/tokenizer file was not included in the repository.
os.environ.setdefault("HF_HUB_OFFLINE", "1")
os.environ.setdefault("TRANSFORMERS_OFFLINE", "1")
os.environ.setdefault("HF_DATASETS_OFFLINE", "1")
os.environ.setdefault("TOKENIZERS_PARALLELISM", "false")
os.environ.setdefault("PYTORCH_CUDA_ALLOC_CONF", "expandable_segments:True")
REPO_DIR = Path(__file__).resolve().parent
RESOURCE_DIR = REPO_DIR / "rag_resources"
DEFAULT_INPUT = Path(os.environ.get("IOL_TEST_CSV", "/tmp/data/test.csv"))
DEFAULT_OUTPUT = Path(os.environ.get("IOL_SUBMISSION_CSV", "submission.csv"))
from rag_resources.retriever import BookRetriever # noqa: E402
@dataclass
class ParseResult:
thinking_trace: str
final_text: str
answers: list[str]
valid: bool
error: str = ""
def _load_config() -> dict[str, Any]:
with (RESOURCE_DIR / "config.json").open("r", encoding="utf-8") as handle:
config = json.load(handle)
integer_overrides = {
"IOL_TOP_METHODS": "top_methods",
"IOL_TOP_EXAMPLES": "top_examples",
"IOL_RAG_MAX_CHARS": "rag_max_chars",
"IOL_MAX_NEW_TOKENS": "max_new_tokens",
"IOL_EXPLANATION_MAX_NEW_TOKENS": "explanation_max_new_tokens",
"IOL_MAX_ATTEMPTS": "max_attempts",
"IOL_SEED": "seed",
}
for environment_name, config_name in integer_overrides.items():
if environment_name in os.environ:
config[config_name] = int(os.environ[environment_name])
if "IOL_CHAR_TFIDF_WEIGHT" in os.environ:
config["char_tfidf_weight"] = float(os.environ["IOL_CHAR_TFIDF_WEIGHT"])
if "IOL_ENABLE_EXPLANATIONS" in os.environ:
config["enable_explanations"] = os.environ[
"IOL_ENABLE_EXPLANATIONS"
].strip().casefold() in {"1", "true", "yes", "on"}
return config
def _clean_answer_line(line: str) -> str:
value = line.strip()
value = re.sub(r"^(?:[-*•]\s+)", "", value)
value = re.sub(r"^(?:\(?\d+\)?|\(?[A-Za-z]\)?)[.):]\s+", "", value)
value = value.strip()
pairs = {'"': '"', "'": "'", "`": "`", "“": "”", "‘": "’"}
if len(value) >= 2 and value[0] in pairs and value[-1] == pairs[value[0]]:
value = value[1:-1].strip()
return value
def parse_model_response(thinking_trace: str, final_text: str) -> ParseResult:
"""Parse a separate reasoning trace and a strict FINAL ANSWERS block."""
marker_matches = list(
re.finditer(r"(?im)^\s*FINAL\s+ANSWERS\s*:\s*", final_text)
)
if not marker_matches:
return ParseResult(
thinking_trace=thinking_trace.strip(),
final_text=final_text.strip(),
answers=[],
valid=False,
error="missing FINAL ANSWERS: marker",
)
marker = marker_matches[-1]
reasoning_outside_think = final_text[:marker.start()].strip()
combined_trace = "\n\n".join(
part for part in (thinking_trace.strip(), reasoning_outside_think) if part
)
answer_block = final_text[marker.end():].strip()
answer_block = re.sub(r"^```(?:text)?\s*", "", answer_block, flags=re.I)
answer_block = re.sub(r"\s*```\s*$", "", answer_block)
if not answer_block:
return ParseResult(
thinking_trace=combined_trace,
final_text=final_text.strip(),
answers=[],
valid=False,
error="empty FINAL ANSWERS block",
)
# Be tolerant if the model emits a JSON list even though bare lines were asked for.
answers: list[str] = []
parsed_json_list = False
if answer_block.startswith("["):
try:
decoded = json.loads(answer_block)
if isinstance(decoded, list):
parsed_json_list = True
answers = [str(value).strip() for value in decoded if str(value).strip()]
except json.JSONDecodeError:
pass
if not answers and not parsed_json_list:
for line in answer_block.splitlines():
stripped = line.strip()
if not stripped or stripped.startswith("```"):
continue
if re.match(r"(?i)^(?:explanation|reasoning|notes?)\s*:", stripped):
break
cleaned = _clean_answer_line(stripped)
if cleaned:
answers.append(cleaned)
if not answers:
return ParseResult(
thinking_trace=combined_trace,
final_text=final_text.strip(),
answers=[],
valid=False,
error="no non-empty answers in FINAL ANSWERS block",
)
return ParseResult(
thinking_trace=combined_trace,
final_text=final_text.strip(),
answers=answers,
valid=True,
)
def _best_effort_answers(final_texts: list[str]) -> list[str]:
"""Keep submission shape valid if all strict retries fail."""
for text in reversed(final_texts):
candidates = []
for line in text.splitlines():
cleaned = _clean_answer_line(line)
if cleaned and not re.match(
r"(?i)^(?:final answers|explanation|reasoning)\s*:?'?",
cleaned,
):
candidates.append(cleaned)
if candidates:
return [candidates[-1]]
return [""]
def _version_tuple(version: str) -> tuple[int, int, int]:
numbers = [int(value) for value in re.findall(r"\d+", version)[:3]]
return tuple((numbers + [0, 0, 0])[:3]) # type: ignore[return-value]
def _keep_last_token_hidden_state(_module: Any, inputs: tuple[Any, ...]) -> tuple[Any, ...] | None:
"""Avoid materializing full-sequence vocabulary logits during generation."""
if not inputs:
return None
hidden_states = inputs[0]
if hidden_states.ndim == 3 and hidden_states.shape[1] > 1:
return (hidden_states[:, -1:, :],) + inputs[1:]
return None
def load_model_and_tokenizer() -> tuple[Any, Any, Any]:
"""Load the pre-quantized AWQ model shipped in this repository."""
try:
import torch
import transformers
from transformers import AutoModelForCausalLM, AutoTokenizer
except ImportError as exc:
raise RuntimeError(
"PyTorch, Transformers, Accelerate, AutoAWQ, and safetensors must be "
"available in the evaluation image."
) from exc
if _version_tuple(transformers.__version__) < (4, 37, 0):
raise RuntimeError(
f"Qwen2.5 requires transformers>=4.37.0; found {transformers.__version__}."
)
model_config_path = REPO_DIR / "config.json"
if not model_config_path.exists():
raise RuntimeError(
"Qwen2.5-14B-Instruct-AWQ files are missing. Put the complete model and "
"tokenizer snapshot in the same repository directory as script.py."
)
with model_config_path.open("r", encoding="utf-8") as handle:
model_metadata = json.load(handle)
quantization_method = str(
model_metadata.get("quantization_config", {}).get("quant_method", "")
).casefold()
if model_metadata.get("model_type") != "qwen2" or quantization_method != "awq":
raise RuntimeError(
"This script expects the official Qwen2.5-14B-Instruct-AWQ snapshot "
"(model_type=qwen2, quant_method=awq)."
)
tokenizer = AutoTokenizer.from_pretrained(
str(REPO_DIR), local_files_only=True, trust_remote_code=False
)
if tokenizer.pad_token_id is None:
tokenizer.pad_token_id = tokenizer.eos_token_id
model = AutoModelForCausalLM.from_pretrained(
str(REPO_DIR),
local_files_only=True,
trust_remote_code=False,
device_map="auto",
torch_dtype=torch.float16,
low_cpu_mem_usage=True,
).eval()
# Transformers 4.44.1 projects every prompt token through Qwen2's large
# vocabulary head and then upcasts all logits to FP32. Generation only uses
# the final-token logits, so trim the token dimension immediately before
# lm_head to avoid a multi-gigabyte prefill allocation on the T4.
model.lm_head.register_forward_pre_hook(_keep_last_token_hidden_state)
input_device = model.get_input_embeddings().weight.device
return model, tokenizer, input_device
def _problem_prompt(row: dict[str, Any], rag_text: str, retry_note: str = "") -> str:
work_language = str(row.get("work_lang", "")).strip()
task_language = str(row.get("task_lang", "")).strip()
language_lines = []
if work_language:
language_lines.append(f"Working language: {work_language}")
if task_language:
language_lines.append(f"Problem language: {task_language}")
language_metadata = "\n".join(language_lines)
sections = [rag_text] if rag_text else []
sections.append("CURRENT PROBLEM")
if language_metadata:
sections.append(language_metadata)
sections.extend(
[
"CONTEXT:\n" + str(row.get("context", "")),
"QUERY:\n" + str(row.get("query", "")),
]
)
if retry_note:
sections.append(retry_note)
return "\n\n".join(sections)
def _encode_fitted_prompt(
tokenizer: Any,
system_prompt: str,
row: dict[str, Any],
rag_text: str,
retry_note: str,
context_window: int,
requested_new_tokens: int,
) -> tuple[dict[str, Any], int]:
"""Trim retrieved material, never the current problem, to fit the context."""
fitted_rag = rag_text
while True:
messages = [
{"role": "system", "content": system_prompt},
{"role": "user", "content": _problem_prompt(row, fitted_rag, retry_note)},
]
rendered = tokenizer.apply_chat_template(
messages,
tokenize=False,
add_generation_prompt=True,
)
encoded = tokenizer(rendered, return_tensors="pt", add_special_tokens=False)
prompt_tokens = int(encoded["input_ids"].shape[-1])
available = context_window - prompt_tokens
if available >= requested_new_tokens:
return encoded, requested_new_tokens
if fitted_rag:
if len(fitted_rag) <= 600:
fitted_rag = ""
else:
new_length = max(0, int(len(fitted_rag) * 0.72))
fitted_rag = fitted_rag[:new_length].rsplit("\n", 1)[0].rstrip()
fitted_rag += "\n[retrieved material shortened to fit the model context]"
continue
if available >= 256:
return encoded, available
raise RuntimeError(
f"The current problem and system prompt use {prompt_tokens} tokens, "
f"leaving only {available} tokens in the {context_window}-token context."
)
def generate_once(
model: Any,
tokenizer: Any,
input_device: Any,
system_prompt: str,
row: dict[str, Any],
rag_text: str,
retry_note: str,
config: dict[str, Any],
seed: int,
) -> ParseResult:
import torch
encoded, max_new_tokens = _encode_fitted_prompt(
tokenizer=tokenizer,
system_prompt=system_prompt,
row=row,
rag_text=rag_text,
retry_note=retry_note,
context_window=int(config["model_context_tokens"]),
requested_new_tokens=int(config["max_new_tokens"]),
)
encoded = {name: value.to(input_device) for name, value in encoded.items()}
torch.manual_seed(seed)
if torch.cuda.is_available():
torch.cuda.manual_seed_all(seed)
# These values match the generation configuration shipped with Qwen2.5
# Instruct checkpoints while keeping an explicit challenge-time token cap.
with torch.inference_mode():
output = model.generate(
**encoded,
max_new_tokens=max_new_tokens,
do_sample=True,
temperature=float(config["temperature"]),
top_p=float(config["top_p"]),
top_k=int(config["top_k"]),
repetition_penalty=float(config["repetition_penalty"]),
use_cache=True,
pad_token_id=tokenizer.pad_token_id,
)
prompt_length = int(encoded["input_ids"].shape[-1])
generated_ids = output[0, prompt_length:].tolist()
response_text = tokenizer.decode(generated_ids, skip_special_tokens=True).strip()
return parse_model_response("", response_text)
def solve_row(
row: dict[str, Any],
row_index: int,
retriever: BookRetriever,
model: Any,
tokenizer: Any,
input_device: Any,
system_prompt: str,
config: dict[str, Any],
) -> ParseResult:
retrieval = retriever.retrieve(
row,
top_methods=int(config["top_methods"]),
top_examples=int(config["top_examples"]),
char_tfidf_weight=float(config["char_tfidf_weight"]),
)
rag_text = retriever.format_for_prompt(
retrieval, max_chars=int(config["rag_max_chars"])
)
failed_results: list[ParseResult] = []
last_error = ""
max_attempts = int(config["max_attempts"])
for attempt in range(max_attempts):
retry_note = ""
if attempt:
retry_note = (
"FORMAT RETRY. The previous sample was rejected by the answer parser "
f"because it had {last_error}. Generate a fresh solution. Even if "
"uncertain, end with exactly FINAL ANSWERS: followed by at least one "
"non-empty bare answer line and nothing else in that block."
)
result = generate_once(
model=model,
tokenizer=tokenizer,
input_device=input_device,
system_prompt=system_prompt,
row=row,
rag_text=rag_text,
retry_note=retry_note,
config=config,
seed=int(config["seed"]) + row_index * max_attempts + attempt,
)
if result.valid:
if attempt:
print(f" parser accepted retry {attempt + 1}/{max_attempts}", flush=True)
return result
last_error = result.error
failed_results.append(result)
print(
f" parser rejected attempt {attempt + 1}/{max_attempts}: {last_error}",
flush=True,
)
print(" WARNING: all strict retries failed; using a best-effort final line", flush=True)
last_result = failed_results[-1]
return ParseResult(
thinking_trace=last_result.thinking_trace,
final_text=last_result.final_text,
answers=_best_effort_answers(
[failed_result.final_text for failed_result in failed_results]
),
valid=False,
error=f"all {max_attempts} strict parsing attempts failed",
)
def generate_explanation(
solution: ParseResult,
model: Any,
tokenizer: Any,
input_device: Any,
config: dict[str, Any],
) -> str:
"""Summarize the model's accepted reasoning for the optional jury track."""
import torch
source_reasoning = solution.thinking_trace.strip() or solution.final_text.strip()
answer_text = "\n".join(solution.answers)
messages = [
{
"role": "system",
"content": (
"Write a short, human-readable explanation of the solution in a few "
"concise bullet points. State the linguistic rule or pattern found, "
"the key evidence, and how the final answers follow. Do not reproduce "
"the raw reasoning trace, trial and error, or meta-commentary. Do not "
"change the final answers. Output only the explanation."
),
},
{
"role": "user",
"content": (
f"MODEL REASONING:\n{source_reasoning}\n\n"
f"FINAL ANSWERS:\n{answer_text}"
),
},
]
rendered = tokenizer.apply_chat_template(
messages, tokenize=False, add_generation_prompt=True
)
encoded = tokenizer(rendered, return_tensors="pt", add_special_tokens=False)
encoded = {name: value.to(input_device) for name, value in encoded.items()}
prompt_tokens = int(encoded["input_ids"].shape[-1])
available = int(config["model_context_tokens"]) - prompt_tokens
max_new_tokens = min(int(config["explanation_max_new_tokens"]), available)
if max_new_tokens < 32:
return (
"- Inferred the relevant linguistic patterns from the supplied examples.\n"
"- Applied those patterns to produce the listed answers."
)
with torch.inference_mode():
output = model.generate(
**encoded,
max_new_tokens=max_new_tokens,
do_sample=False,
use_cache=True,
pad_token_id=tokenizer.pad_token_id,
)
generated_ids = output[0, prompt_tokens:].tolist()
explanation = tokenizer.decode(
generated_ids, skip_special_tokens=True
).strip()
if explanation:
return explanation
return (
"- Inferred the relevant linguistic patterns from the supplied examples.\n"
"- Applied those patterns to produce the listed answers."
)
def read_test_rows(path: Path) -> list[dict[str, Any]]:
with path.open("r", encoding="utf-8-sig", newline="") as handle:
return list(csv.DictReader(handle))
def _write_submission_stream(handle: Any, rows: list[dict[str, str]]) -> None:
writer = csv.DictWriter(handle, fieldnames=["id", "pred", "explanation"])
writer.writeheader()
writer.writerows(rows)
def write_submission(path: Path, rows: list[dict[str, str]]) -> None:
path.parent.mkdir(parents=True, exist_ok=True)
temporary_path = path.with_name(f".{path.name}.tmp")
with temporary_path.open("w", encoding="utf-8", newline="") as handle:
_write_submission_stream(handle, rows)
os.replace(temporary_path, path)
def run_self_test() -> None:
import numpy as np
hidden_states = np.arange(24).reshape(1, 3, 8)
trimmed = _keep_last_token_hidden_state(None, (hidden_states,))
assert trimmed is not None and trimmed[0].shape == (1, 1, 8)
assert np.array_equal(trimmed[0], hidden_states[:, -1:, :])
assert _keep_last_token_hidden_state(None, (hidden_states[:, -1:, :],)) is None
parsed = parse_model_response(
"A useful analysis.",
"One last check.\nFINAL ANSWERS:\n1. čha\n2) multi word form",
)
assert parsed.valid
assert parsed.answers == ["čha", "multi word form"]
assert "One last check." in parsed.thinking_trace
assert not parse_model_response("", "FINAL ANSWERS:\n").valid
assert not parse_model_response("", "FINAL ANSWERS:\n[]").valid
assert not parse_model_response("", 'FINAL ANSWERS:\n[""]').valid
assert not parse_model_response("", "The answer is x.").valid
retriever = BookRetriever(RESOURCE_DIR)
canary_row = {
"context": "The following words are number expressions in an unknown language.",
"query": "Determine the rule and write the number 25 in words.",
"answer": "PRIVATE_ANSWER_CANARY",
}
result = retriever.retrieve(
canary_row, top_methods=2, top_examples=2, char_tfidf_weight=3.0
)
prompt = retriever.format_for_prompt(result, max_chars=8000)
assert result["methods"] and result["examples"]
assert "PRIVATE_ANSWER_CANARY" not in prompt
assert all(example.get("string_only_usable") for example in result["examples"])
exact_example = retriever.examples[0]
exact_result = retriever.retrieve(
{"context": exact_example["context"], "query": exact_example["query"]},
top_methods=1,
top_examples=1,
char_tfidf_weight=3.0,
)
assert exact_result["examples"][0]["id"] == exact_example["id"]
submission_buffer = io.StringIO(newline="")
_write_submission_stream(
submission_buffer,
[
{
"id": "007",
"pred": json.dumps(["čha", "multi word"], ensure_ascii=False),
"explanation": "- Identified the relevant pattern.",
}
],
)
submission_buffer.seek(0)
assert list(csv.DictReader(submission_buffer)) == [
{
"id": "007",
"pred": '["čha", "multi word"]',
"explanation": "- Identified the relevant pattern.",
}
]
incremental_rows = [
{"id": "001", "pred": "[]", "explanation": ""},
{"id": "002", "pred": "[]", "explanation": ""},
]
incremental_rows[0]["pred"] = json.dumps(["answer"], ensure_ascii=False)
incremental_buffer = io.StringIO(newline="")
_write_submission_stream(incremental_buffer, incremental_rows)
incremental_buffer.seek(0)
assert list(csv.DictReader(incremental_buffer)) == incremental_rows
print(
"Self-test passed: last-token logits hook, parser, empty-answer rejection, "
"hybrid book-only retrieval, exact-match retrieval, and submission CSV "
"serialization."
)
def main() -> None:
if hasattr(sys.stdout, "reconfigure"):
sys.stdout.reconfigure(encoding="utf-8")
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--input", type=Path, default=DEFAULT_INPUT)
parser.add_argument("--output", type=Path, default=DEFAULT_OUTPUT)
parser.add_argument(
"--explanations",
choices=("on", "off"),
default=None,
help="Generate optional jury-track explanations (default: config setting)",
)
parser.add_argument(
"--self-test", action="store_true", help="Test parser/retrieval without loading Qwen"
)
args = parser.parse_args()
if args.self_test:
run_self_test()
return
if not args.input.exists():
raise SystemExit(f"Test file not found: {args.input}")
config = _load_config()
explanations_enabled = (
args.explanations == "on"
if args.explanations is not None
else bool(config.get("enable_explanations", False))
)
system_prompt = (RESOURCE_DIR / "system_prompt.txt").read_text(encoding="utf-8").strip()
test_rows = read_test_rows(args.input)
retriever = BookRetriever(RESOURCE_DIR)
# Do not create an all-empty submission before the model is known to load.
# Otherwise a missing/incompatible shard or startup OOM is silently scored as
# zero EM and zero chrF instead of being reported as a runtime failure.
model, tokenizer, input_device = load_model_and_tokenizer()
submission_rows: list[dict[str, str]] = [
{
"id": str(row.get("id", "")),
"pred": "[]",
"explanation": "",
}
for row in test_rows
]
write_submission(args.output, submission_rows)
print(
f"Initialized incremental submission with {len(submission_rows)} rows at "
f"{args.output}; explanations={'on' if explanations_enabled else 'off'}",
flush=True,
)
for index, row in enumerate(test_rows):
row_id = str(row.get("id", ""))
print(f"[{index + 1}/{len(test_rows)}] solving id={row_id}", flush=True)
solution = solve_row(
row=row,
row_index=index,
retriever=retriever,
model=model,
tokenizer=tokenizer,
input_device=input_device,
system_prompt=system_prompt,
config=config,
)
explanation = ""
if explanations_enabled:
explanation = generate_explanation(
solution=solution,
model=model,
tokenizer=tokenizer,
input_device=input_device,
config=config,
)
submission_rows[index] = {
"id": row_id,
"pred": json.dumps(solution.answers, ensure_ascii=False),
"explanation": explanation,
}
write_submission(args.output, submission_rows)
print(f"Checkpointed prediction {index + 1}/{len(test_rows)}", flush=True)
print(f"Wrote {len(submission_rows)} predictions to {args.output}", flush=True)
if __name__ == "__main__":
main()

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special_tokens_map.json Normal file
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{
"additional_special_tokens": [
"<|im_start|>",
"<|im_end|>",
"<|object_ref_start|>",
"<|object_ref_end|>",
"<|box_start|>",
"<|box_end|>",
"<|quad_start|>",
"<|quad_end|>",
"<|vision_start|>",
"<|vision_end|>",
"<|vision_pad|>",
"<|image_pad|>",
"<|video_pad|>"
],
"eos_token": {
"content": "<|im_end|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false
},
"pad_token": {
"content": "<|endoftext|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false
}
}

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tokenizer.json (Stored with Git LFS) Normal file

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tokenizer_config.json Normal file
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{
"add_bos_token": false,
"add_prefix_space": false,
"added_tokens_decoder": {
"151643": {
"content": "<|endoftext|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151644": {
"content": "<|im_start|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151645": {
"content": "<|im_end|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151646": {
"content": "<|object_ref_start|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151647": {
"content": "<|object_ref_end|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151648": {
"content": "<|box_start|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151649": {
"content": "<|box_end|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151650": {
"content": "<|quad_start|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151651": {
"content": "<|quad_end|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151652": {
"content": "<|vision_start|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151653": {
"content": "<|vision_end|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151654": {
"content": "<|vision_pad|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151655": {
"content": "<|image_pad|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151656": {
"content": "<|video_pad|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": true
},
"151657": {
"content": "<tool_call>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": false
},
"151658": {
"content": "</tool_call>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": false
},
"151659": {
"content": "<|fim_prefix|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": false
},
"151660": {
"content": "<|fim_middle|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": false
},
"151661": {
"content": "<|fim_suffix|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": false
},
"151662": {
"content": "<|fim_pad|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": false
},
"151663": {
"content": "<|repo_name|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": false
},
"151664": {
"content": "<|file_sep|>",
"lstrip": false,
"normalized": false,
"rstrip": false,
"single_word": false,
"special": false
}
},
"additional_special_tokens": [
"<|im_start|>",
"<|im_end|>",
"<|object_ref_start|>",
"<|object_ref_end|>",
"<|box_start|>",
"<|box_end|>",
"<|quad_start|>",
"<|quad_end|>",
"<|vision_start|>",
"<|vision_end|>",
"<|vision_pad|>",
"<|image_pad|>",
"<|video_pad|>"
],
"bos_token": null,
"chat_template": "{%- if tools %}\n {{- '<|im_start|>system\\n' }}\n {%- if messages[0]['role'] == 'system' %}\n {{- messages[0]['content'] }}\n {%- else %}\n {{- 'You are Qwen, created by Alibaba Cloud. You are a helpful assistant.' }}\n {%- endif %}\n {{- \"\\n\\n# Tools\\n\\nYou may call one or more functions to assist with the user query.\\n\\nYou are provided with function signatures within <tools></tools> XML tags:\\n<tools>\" }}\n {%- for tool in tools %}\n {{- \"\\n\" }}\n {{- tool | tojson }}\n {%- endfor %}\n {{- \"\\n</tools>\\n\\nFor each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:\\n<tool_call>\\n{\\\"name\\\": <function-name>, \\\"arguments\\\": <args-json-object>}\\n</tool_call><|im_end|>\\n\" }}\n{%- else %}\n {%- if messages[0]['role'] == 'system' %}\n {{- '<|im_start|>system\\n' + messages[0]['content'] + '<|im_end|>\\n' }}\n {%- else %}\n {{- '<|im_start|>system\\nYou are Qwen, created by Alibaba Cloud. You are a helpful assistant.<|im_end|>\\n' }}\n {%- endif %}\n{%- endif %}\n{%- for message in messages %}\n {%- if (message.role == \"user\") or (message.role == \"system\" and not loop.first) or (message.role == \"assistant\" and not message.tool_calls) %}\n {{- '<|im_start|>' + message.role + '\\n' + message.content + '<|im_end|>' + '\\n' }}\n {%- elif message.role == \"assistant\" %}\n {{- '<|im_start|>' + message.role }}\n {%- if message.content %}\n {{- '\\n' + message.content }}\n {%- endif %}\n {%- for tool_call in message.tool_calls %}\n {%- if tool_call.function is defined %}\n {%- set tool_call = tool_call.function %}\n {%- endif %}\n {{- '\\n<tool_call>\\n{\"name\": \"' }}\n {{- tool_call.name }}\n {{- '\", \"arguments\": ' }}\n {{- tool_call.arguments | tojson }}\n {{- '}\\n</tool_call>' }}\n {%- endfor %}\n {{- '<|im_end|>\\n' }}\n {%- elif message.role == \"tool\" %}\n {%- if (loop.index0 == 0) or (messages[loop.index0 - 1].role != \"tool\") %}\n {{- '<|im_start|>user' }}\n {%- endif %}\n {{- '\\n<tool_response>\\n' }}\n {{- message.content }}\n {{- '\\n</tool_response>' }}\n {%- if loop.last or (messages[loop.index0 + 1].role != \"tool\") %}\n {{- '<|im_end|>\\n' }}\n {%- endif %}\n {%- endif %}\n{%- endfor %}\n{%- if add_generation_prompt %}\n {{- '<|im_start|>assistant\\n' }}\n{%- endif %}\n",
"clean_up_tokenization_spaces": false,
"eos_token": "<|im_end|>",
"errors": "replace",
"model_max_length": 131072,
"pad_token": "<|endoftext|>",
"split_special_tokens": false,
"tokenizer_class": "Qwen2Tokenizer",
"unk_token": null
}

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vocab.json Normal file

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