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https://github.com/Steffo99/unimore-bda-6.git
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94 lines
2.6 KiB
Python
94 lines
2.6 KiB
Python
import logging
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from .config import config, DATA_SET_SIZE
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from .database import Review, mongo_reviews_collection_from_config, dataset_polar, dataset_varied
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from .analysis.vanilla import VanillaSA
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from .tokenization import all_tokenizers
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from .log import install_log_handler
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log = logging.getLogger(__name__)
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def review_vanilla_extractor(review: Review) -> tuple[str, float]:
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"""
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Extract review text and rating from a `Review`.
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"""
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return review["reviewText"], review["overall"]
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def polar_categorizer(rating: float) -> str:
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"""
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Return the polar label corresponding to the given rating.
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Possible categories are:
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* negative (1.0, 2.0)
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* positive (3.0, 4.0, 5.0)
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* unknown (everything else)
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"""
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match rating:
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case 1.0 | 2.0:
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return "negative"
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case 3.0 | 4.0 | 5.0:
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return "positive"
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case _:
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return "unknown"
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def varied_categorizer(rating: float) -> str:
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"""
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Return the "stars" label corresponding to the given rating.
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Possible categories are:
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* terrible (1.0)
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* negative (2.0)
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* mixed (3.0)
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* positive (4.0)
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* great (5.0)
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* unknown (everything else)
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"""
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match rating:
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case 1.0:
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return "terrible"
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case 2.0:
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return "negative"
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case 3.0:
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return "mixed"
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case 4.0:
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return "positive"
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case 5.0:
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return "great"
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case _:
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return "unknown"
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def main():
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for dataset_func, categorizer in [
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(dataset_polar, polar_categorizer),
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(dataset_varied, varied_categorizer),
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]:
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for tokenizer in all_tokenizers:
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with mongo_reviews_collection_from_config() as reviews:
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reviews_training = dataset_func(collection=reviews, amount=DATA_SET_SIZE.__wrapped__)
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reviews_evaluation = dataset_func(collection=reviews, amount=DATA_SET_SIZE.__wrapped__)
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model = VanillaSA(extractor=review_vanilla_extractor, tokenizer=tokenizer, categorizer=categorizer)
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log.info("Training model %s", model)
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model.train(reviews_training)
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log.info("Evaluating model %s", model)
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evaluation = model.evaluate(reviews_evaluation)
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log.info("Results of model %s: %s", tokenizer, evaluation)
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try:
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print("Model %s" % model)
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while True:
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print(model.use(input()))
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except KeyboardInterrupt:
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pass
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if __name__ == "__main__":
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install_log_handler()
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config.proxies.resolve()
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main()
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