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Model: Devildarker6789/qwen2vl-chartqa Source: Original Platform
2026-06-30 15:19:50 +08:00
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--- a/README.md
+++ b/README.md
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+---
+language: en
+license: apache-2.0
+base_model: Qwen/Qwen2-VL-2B-Instruct
+datasets:
+- HuggingFaceM4/ChartQA
+tags:
+- vision-language
+- chart-qa
+- lora
+- multimodal
+---
+
+# Qwen2-VL-2B Fine-tuned on ChartQA
+
+Fine-tuned version of Qwen2-VL-2B-Instruct on the ChartQA dataset for visual question answering on charts.
+
+## Model Details
+- **Base model:** Qwen/Qwen2-VL-2B-Instruct
+- **Fine-tuning:** LoRA (r=16, alpha=32, target: q/k/v/o projections)
+- **Dataset:** HuggingFaceM4/ChartQA (2000 train, 200 val samples)
+- **Training:** 1 epoch, lr=2e-4, T4 GPU on Kaggle
+- **Results:** Train Loss: 0.5040 | Val Loss: 0.6956
+
+## How to Use
+```python
+from transformers import AutoProcessor, Qwen2VLForConditionalGeneration
+from PIL import Image
+import torch
+
+model_id = "Devildarker6789/qwen2vl-chartqa"
+
+processor = AutoProcessor.from_pretrained(model_id, min_pixels=256*28*28, max_pixels=512*28*28)
+model = Qwen2VLForConditionalGeneration.from_pretrained(
+    model_id,
+    torch_dtype=torch.float16,
+    device_map="auto"
+)
+model.eval()
+
+image = Image.open("your_chart.png").convert("RGB")
+question = "What is the highest value in this chart?"
+
+messages = [{"role": "user", "content": [
+    {"type": "image", "image": image},
+    {"type": "text",  "text": question}
+]}]
+
+text = processor.apply_chat_template(messages, tokenize=False, add_generation_prompt=True)
+inputs = processor(text=[text], images=[image], return_tensors="pt").to(model.device)
+
+with torch.no_grad():
+    out = model.generate(**inputs, max_new_tokens=64, do_sample=False)
+
+print(processor.decode(out[0][inputs["input_ids"].shape[1]:], skip_special_tokens=True))
+```
+
+## Training Details
+- Quantization: 8-bit during training
+- LoRA rank: 16, alpha: 32, dropout: 0.05
+- Optimizer: AdamW, lr=2e-4, cosine scheduler
+- Batch size: 1 × 16 grad accumulation = 16 effective
+- Hardware: T4 GPU (Kaggle)
+```
+
+Then click **Save** — and your HF link is:
+```
+https://huggingface.co/Devildarker6789/qwen2vl-chartqa
--- a/added_tokens.json
+++ b/added_tokens.json
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+{
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+  "<|box_start|>": 151648,
+  "<|endoftext|>": 151643,
+  "<|im_end|>": 151645,
+  "<|im_start|>": 151644,
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+  "<|vision_pad|>": 151654,
+  "<|vision_start|>": 151652
+}
--- a/chat_template.json
+++ b/chat_template.json
@@ -0,0 +1,3 @@
+{
+  "chat_template": "{% set image_count = namespace(value=0) %}{% set video_count = namespace(value=0) %}{% for message in messages %}{% if loop.first and message['role'] != 'system' %}<|im_start|>system\nYou are a helpful assistant.<|im_end|>\n{% endif %}<|im_start|>{{ message['role'] }}\n{% if message['content'] is string %}{{ message['content'] }}<|im_end|>\n{% else %}{% for content in message['content'] %}{% if content['type'] == 'image' or 'image' in content or 'image_url' in content %}{% set image_count.value = image_count.value + 1 %}{% if add_vision_id %}Picture {{ image_count.value }}: {% endif %}<|vision_start|><|image_pad|><|vision_end|>{% elif content['type'] == 'video' or 'video' in content %}{% set video_count.value = video_count.value + 1 %}{% if add_vision_id %}Video {{ video_count.value }}: {% endif %}<|vision_start|><|video_pad|><|vision_end|>{% elif 'text' in content %}{{ content['text'] }}{% endif %}{% endfor %}<|im_end|>\n{% endif %}{% endfor %}{% if add_generation_prompt %}<|im_start|>assistant\n{% endif %}"
+}
--- a/config.json
+++ b/config.json
@@ -0,0 +1,49 @@
+{
+  "_name_or_path": "Qwen/Qwen2-VL-2B-Instruct",
+  "architectures": [
+    "Qwen2VLForConditionalGeneration"
+  ],
+  "attention_dropout": 0.0,
+  "bos_token_id": 151643,
+  "eos_token_id": 151645,
+  "hidden_act": "silu",
+  "hidden_size": 1536,
+  "image_token_id": 151655,
+  "initializer_range": 0.02,
+  "intermediate_size": 8960,
+  "max_position_embeddings": 32768,
+  "max_window_layers": 28,
+  "model_type": "qwen2_vl",
+  "num_attention_heads": 12,
+  "num_hidden_layers": 28,
+  "num_key_value_heads": 2,
+  "rms_norm_eps": 1e-06,
+  "rope_scaling": {
+    "mrope_section": [
+      16,
+      24,
+      24
+    ],
+    "rope_type": "default",
+    "type": "default"
+  },
+  "rope_theta": 1000000.0,
+  "sliding_window": 32768,
+  "tie_word_embeddings": true,
+  "torch_dtype": "float16",
+  "transformers_version": "4.49.0",
+  "use_cache": true,
+  "use_sliding_window": false,
+  "video_token_id": 151656,
+  "vision_config": {
+    "hidden_size": 1536,
+    "in_chans": 3,
+    "model_type": "qwen2_vl",
+    "spatial_patch_size": 14,
+    "torch_dtype": "float16"
+  },
+  "vision_end_token_id": 151653,
+  "vision_start_token_id": 151652,
+  "vision_token_id": 151654,
+  "vocab_size": 151936
+}
--- a/generation_config.json
+++ b/generation_config.json
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+{
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+  "do_sample": true,
+  "eos_token_id": [
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+  "temperature": 0.01,
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+  "top_p": 0.001,
+  "transformers_version": "4.49.0"
+}
--- a/merges.txt
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--- a/preprocessor_config.json
+++ b/preprocessor_config.json
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+{
+  "do_convert_rgb": true,
+  "do_normalize": true,
+  "do_rescale": true,
+  "do_resize": true,
+  "image_mean": [
+    0.48145466,
+    0.4578275,
+    0.40821073
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+  "image_processor_type": "Qwen2VLImageProcessor",
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+  "merge_size": 2,
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+  "processor_class": "Qwen2VLProcessor",
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+}
--- a/special_tokens_map.json
+++ b/special_tokens_map.json
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+{
+  "additional_special_tokens": [
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+    "<|im_end|>",
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+    "lstrip": false,
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+  "pad_token": {
+    "content": "<|endoftext|>",
+    "lstrip": false,
+    "normalized": false,
+    "rstrip": false,
+    "single_word": false
+  }
+}
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--- a/tokenizer_config.json
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+    "<|object_ref_start|>",
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+    "<|vision_start|>",
+    "<|vision_end|>",
+    "<|vision_pad|>",
+    "<|image_pad|>",
+    "<|video_pad|>"
+  ],
+  "bos_token": null,
+  "chat_template": "{% set image_count = namespace(value=0) %}{% set video_count = namespace(value=0) %}{% for message in messages %}{% if loop.first and message['role'] != 'system' %}<|im_start|>system\nYou are a helpful assistant.<|im_end|>\n{% endif %}<|im_start|>{{ message['role'] }}\n{% if message['content'] is string %}{{ message['content'] }}<|im_end|>\n{% else %}{% for content in message['content'] %}{% if content['type'] == 'image' or 'image' in content or 'image_url' in content %}{% set image_count.value = image_count.value + 1 %}{% if add_vision_id %}Picture {{ image_count.value }}: {% endif %}<|vision_start|><|image_pad|><|vision_end|>{% elif content['type'] == 'video' or 'video' in content %}{% set video_count.value = video_count.value + 1 %}{% if add_vision_id %}Video {{ video_count.value }}: {% endif %}<|vision_start|><|video_pad|><|vision_end|>{% elif 'text' in content %}{{ content['text'] }}{% endif %}{% endfor %}<|im_end|>\n{% endif %}{% endfor %}{% if add_generation_prompt %}<|im_start|>assistant\n{% endif %}",
+  "clean_up_tokenization_spaces": false,
+  "eos_token": "<|im_end|>",
+  "errors": "replace",
+  "extra_special_tokens": {},
+  "max_pixels": 401408,
+  "min_pixels": 200704,
+  "model_max_length": 32768,
+  "pad_token": "<|endoftext|>",
+  "padding_side": "left",
+  "processor_class": "Qwen2VLProcessor",
+  "split_special_tokens": false,
+  "tokenizer_class": "Qwen2Tokenizer",
+  "unk_token": null
+}
--- a/vocab.json
+++ b/vocab.json