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https://github.com/ml-explore/mlx-examples.git
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b0bcd86a40
* LoRA: move load_dataset to tuner/datasets.py file * LoRA: support OpenAI chat format datasets see https://platform.openai.com/docs/guides/fine-tuning/example-format * LoRA: support OpenAI completion format datasets * LoRA: formatting dataset timing to reduce memory footprint * Refactor dataset item access in PromptCompletionDataset * Update mlx_lm/LORA.md * Update mlx_lm/LORA.md * check Unsupported data format * add tests, fine-tune doc * add tests, fine-tune doc * add jinja2 for chat template * nits in readme * nits in readme --------- Co-authored-by: Awni Hannun <awni@apple.com>
82 lines
2.8 KiB
Python
82 lines
2.8 KiB
Python
# Copyright © 2024 Apple Inc.
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import json
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import os
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import tempfile
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import types
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import unittest
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from mlx_lm.tuner import datasets
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from transformers import AutoTokenizer
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HF_MODEL_PATH = "mlx-community/Qwen1.5-0.5B-Chat-4bit"
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class TestDatasets(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.test_dir_fid = tempfile.TemporaryDirectory()
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cls.test_dir = cls.test_dir_fid.name
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if not os.path.isdir(cls.test_dir):
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os.mkdir(cls.test_dir_fid.name)
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@classmethod
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def tearDownClass(cls):
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cls.test_dir_fid.cleanup()
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def save_data(self, data):
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for ds in ["train", "valid"]:
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with open(os.path.join(self.test_dir, f"{ds}.jsonl"), "w") as fid:
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for l in data:
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json.dump(l, fid)
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fid.write("\n")
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def test_text(self):
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data = {"text": "This is an example for the model."}
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self.save_data(4 * [data])
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args = types.SimpleNamespace(train=True, test=False, data=self.test_dir)
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train, valid, test = datasets.load_dataset(args, None)
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self.assertEqual(len(train), 4)
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self.assertEqual(len(valid), 4)
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self.assertEqual(len(test), 0)
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self.assertTrue(len(train[0]) > 0)
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self.assertTrue(len(valid[0]) > 0)
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self.assertTrue(isinstance(train, datasets.Dataset))
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def test_completions(self):
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data = {"prompt": "What is the capital of France?", "completion": "Paris."}
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self.save_data(4 * [data])
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args = types.SimpleNamespace(train=True, test=False, data=self.test_dir)
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tokenizer = AutoTokenizer.from_pretrained(HF_MODEL_PATH)
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train, valid, test = datasets.load_dataset(args, tokenizer)
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self.assertEqual(len(train), 4)
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self.assertEqual(len(valid), 4)
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self.assertEqual(len(test), 0)
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self.assertTrue(len(train[0]) > 0)
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self.assertTrue(len(valid[0]) > 0)
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self.assertTrue(isinstance(train, datasets.CompletionsDataset))
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def test_chat(self):
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data = {
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"messages": [
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{"role": "system", "content": "You are a helpful assistant."},
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{"role": "user", "content": "Hello."},
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{"role": "assistant", "content": "How can I assistant you today."},
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]
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}
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self.save_data(4 * [data])
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args = types.SimpleNamespace(train=True, test=False, data=self.test_dir)
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tokenizer = AutoTokenizer.from_pretrained(HF_MODEL_PATH)
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train, valid, test = datasets.load_dataset(args, tokenizer)
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self.assertEqual(len(train), 4)
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self.assertEqual(len(valid), 4)
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self.assertEqual(len(test), 0)
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self.assertTrue(len(train[0]) > 0)
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self.assertTrue(len(valid[0]) > 0)
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self.assertTrue(isinstance(train, datasets.ChatDataset))
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if __name__ == "__main__":
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unittest.main()
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