107 lines
2.8 KiB
Python
107 lines
2.8 KiB
Python
import pandas as pd
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import csv
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import regex as re
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import nltk
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from collections import Counter, defaultdict
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import string
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import unicodedata
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def main():
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try:
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nltk.data.find('tokenizers/punkt')
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except LookupError:
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nltk.download('punkt')
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with open("in-header.tsv") as f:
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in_cols = f.read().strip().split("\t")
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with open("out-header.tsv") as f:
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out_cols = f.read().strip().split("\t")
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data = pd.read_csv(
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"train/in.tsv.xz",
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sep="\t",
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on_bad_lines='skip',
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header=None,
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# names=in_cols,
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quoting=csv.QUOTE_NONE,
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)
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train_labels = pd.read_csv(
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"train/expected.tsv",
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sep="\t",
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on_bad_lines='skip',
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header=None,
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# names=out_cols,
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quoting=csv.QUOTE_NONE,
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)
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train_data = data[[7, 6]]
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train_data = pd.concat([train_data, train_labels], axis=1)
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train_data["final"] = train_data[7] + train_data[0] + train_data[6]
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model = defaultdict(lambda: defaultdict(lambda: 0))
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train_model(train_data, model)
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predict_data("dev-0/in.tsv.xz", "dev-0/out.tsv", model)
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predict_data("test-A/in.tsv.xz", "test-A/out.tsv", model)
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def clean_text(text):
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return re.sub(r"\p{P}", "", str(text).lower().replace("-\\n", "").replace("\\n", " "))
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def train_model(data, model):
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for _, row in data.iterrows():
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words = nltk.word_tokenize(clean_text(row["final"]))
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for w1, w2 in nltk.bigrams(words, pad_left=True, pad_right=True):
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if w1 and w2:
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model[w2][w1] += 1
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for w1 in model:
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total_count = float(sum(model[w1].values()))
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for w2 in model[w1]:
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model[w2][w1] /= total_count
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def predict(word, model):
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predictions = dict(model[word])
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most_common = dict(Counter(predictions).most_common(5))
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total_prob = 0.0
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str_prediction = ""
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for word, prob in most_common.items():
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total_prob += prob
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str_prediction += f"{word}:{prob} "
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if not total_prob:
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return "the:0.2 be:0.2 to:0.2 of:0.1 and:0.1 a:0.1 :0.1"
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if 1 - total_prob >= 0.01:
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str_prediction += f":{1-total_prob}"
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else:
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str_prediction += f":0.01"
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return str_prediction
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def predict_data(read_path, save_path, model):
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data = pd.read_csv(
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read_path,
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sep="\t",
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error_bad_lines=False,
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header=None,
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quoting=csv.QUOTE_NONE
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)
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with open(save_path, "w") as file:
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for _, row in data.iterrows():
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words = nltk.word_tokenize(clean_text(row[6]))
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if len(words) < 3:
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prediction = "the:0.2 be:0.2 to:0.2 of:0.1 and:0.1 a:0.1 :0.1"
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else:
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prediction = predict(words[-1], model)
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file.write(prediction + "\n")
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if __name__ == "__main__":
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main()
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