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Model: Shamima/babylm-2026-multilingual-uniform-100M-v2
Source: Original Platform

.gitattributes

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README.md

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+---
+license: mit
+language:
+- en
+- nl
+- zh
+library_name: transformers
+pipeline_tag: text-generation
+tags:
+- babylm
+- babylm-2026
+- multilingual
+- llama
+- pretrained-from-scratch
+---
+
+# BabyLM 2026 — MultiLingual track baseline v2 (byte-premium-uniform, WSD)
+
+Iteration v2 of the byte-premium-uniform trilingual baseline. Same
+architecture, same tokenizer, same mixture as v1
+(`Shamima/babylm-2026-multilingual-uniform-100M`), but trained with a
+**Warmup-Stable-Decay** schedule rather than cosine, on the same 100M
+ref-token budget at the same per-step compute. The motivation: v1's cosine
+schedule decayed to 10% of peak by ~90% through training while loss was
+still falling; WSD holds at peak and only decays in the last 25%, which lets
+more of the budget land at productive learning rates.
+
+## Architecture
+
+- Llama (HF `LlamaForCausalLM`) — RoPE, RMSNorm, SwiGLU, no biases, tied embeddings
+- 12 layers · 768 hidden · 12 heads · 2048 FFN
+- 1024 sequence length
+- 110,119,680 parameters
+- Tokenizer: joint byte-level BPE 32 768 (same as v1; reused so the two are directly comparable)
+
+## Training
+
+- Data: BabyBabelLM 2026 100M tier (EN/NL/ZH); full corpora loaded in memory and shuffled
+- Mixture: byte-premium-uniform via deficit-driven selection (1/3 of *reference tokens* per language)
+- Optimiser: AdamW (β1=0.9, β2=0.95, wd=0.1)
+- LR: 6e-4 peak, **WSD schedule** (warmup 200 → constant peak → linear 25% decay tail to 6e-5)
+- Compute: 4× NVIDIA A10G (23 GB), bf16, DDP, micro-batch 16 × grad-accum 2 (eff. batch 128 sequences = 131k tokens/step)
+- Tokens consumed at this checkpoint: 100,016,896 byte-premium-adjusted reference tokens (= 1 epoch over the corpus)
+- Per-language epochs at this checkpoint: ~1.0 each (well within the BabyLM ≤10-epoch cap)
+
+## Revisions
+
+19 fast-eval branches: `chck_1M, chck_2M, …, chck_9M, chck_10M, chck_20M, …, chck_90M, chck_100M`.
+`main` is `chck_100M`.
+
+## How to evaluate
+
+```bash
+git clone https://github.com/babylm-org/babylm-eval
+cd babylm-eval/multilingual
+bash scripts/zeroshot_model.sh --model_name Shamima/babylm-2026-multilingual-uniform-100M-v2
+bash scripts/zeroshot_model_fast_all.sh --model_name Shamima/babylm-2026-multilingual-uniform-100M-v2
+```
+
+## Comparison vs v1
+
+See https://github.com/silvererudite/bb-lm-challenge-sub for the iteration
+log, scaffold, and ablation configs.
+
+## Citation
+
+```
+@misc{babylm-2026-uniform-v2,
+  title  = {BabyLM 2026 MultiLingual baseline v2 (WSD schedule)},
+  author = {Hossain, Shamima},
+  year   = {2026},
+  url    = {https://huggingface.co/Shamima/babylm-2026-multilingual-uniform-100M-v2}
+}
+```

config.json

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+{
+  "architectures": [
+    "LlamaForCausalLM"
+  ],
+  "attention_bias": false,
+  "attention_dropout": 0.0,
+  "bos_token_id": 1,
+  "eos_token_id": 2,
+  "head_dim": 64,
+  "hidden_act": "silu",
+  "hidden_size": 768,
+  "initializer_range": 0.02,
+  "intermediate_size": 2048,
+  "max_position_embeddings": 1024,
+  "mlp_bias": false,
+  "model_type": "llama",
+  "num_attention_heads": 12,
+  "num_hidden_layers": 12,
+  "num_key_value_heads": 12,
+  "pad_token_id": 0,
+  "pretraining_tp": 1,
+  "rms_norm_eps": 1e-05,
+  "rope_scaling": null,
+  "rope_theta": 10000.0,
+  "tie_word_embeddings": true,
+  "torch_dtype": "float32",
+  "transformers_version": "4.49.0",
+  "use_cache": false,
+  "vocab_size": 32768
+}

generation_config.json

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+{
+  "_from_model_config": true,
+  "bos_token_id": 1,
+  "eos_token_id": 2,
+  "pad_token_id": 0,
+  "transformers_version": "4.49.0",
+  "use_cache": false
+}

model.safetensors

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special_tokens_map.json

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+{
+  "bos_token": "<bos>",
+  "eos_token": "<eos>",
+  "pad_token": "<pad>",
+  "unk_token": "<unk>"
+}

tokenizer_config.json

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+{
+  "added_tokens_decoder": {
+    "0": {
+      "content": "<pad>",
+      "lstrip": false,
+      "normalized": false,
+      "rstrip": false,
+      "single_word": false,
+      "special": true
+    },
+    "1": {
+      "content": "<bos>",
+      "lstrip": false,
+      "normalized": false,
+      "rstrip": false,
+      "single_word": false,
+      "special": true
+    },
+    "2": {
+      "content": "<eos>",
+      "lstrip": false,
+      "normalized": false,
+      "rstrip": false,
+      "single_word": false,
+      "special": true
+    },
+    "3": {
+      "content": "<unk>",
+      "lstrip": false,
+      "normalized": false,
+      "rstrip": false,
+      "single_word": false,
+      "special": true
+    }
+  },
+  "bos_token": "<bos>",
+  "clean_up_tokenization_spaces": false,
+  "eos_token": "<eos>",
+  "extra_special_tokens": {},
+  "model_max_length": 1000000000000000019884624838656,
+  "pad_token": "<pad>",
+  "tokenizer_class": "PreTrainedTokenizer",
+  "unk_token": "<unk>"
+}