124 lines
3.9 KiB
Python
124 lines
3.9 KiB
Python
import numpy as np
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import pandas as pd
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from datetime import datetime
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from transformers import AutoModelForSequenceClassification, AutoTokenizer, pipeline
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from datasets import load_dataset
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from transformers.pipelines.pt_utils import KeyDataset
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#%%
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# prepare & define paths
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# install xformers (pip install xformers) for better performance
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###################
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# Setup directories
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# WD Michael
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wd = "/home/michael/Documents/PS/Data/collectTweets/"
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# WD Server
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# wd = '/home/yunohost.multimedia/polsoc/Politics & Society/TweetCollection/'
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# datafile input directory
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di = "data/IN/"
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# Tweet-datafile output directory
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ud = "data/OUT/"
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# Name of file that all senator data will be written to
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senCSV = "SenatorsTweets-OnlyCov.csv"
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# Name of Classify datafile
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senCSVClassifiedPrep = "Tweets-Classified-Topic-Prep.csv"
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senCSVClassifiedResult = "Tweets-Classified-Topic-Results.csv"
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# don't change this one
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senCSVPath = wd + ud + senCSV
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senCSVcClassificationPrepPath = wd + ud + senCSVClassifiedPrep
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senCSVcClassificationResultPath = wd + ud + senCSVClassifiedResult
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import sys
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funs = wd+"funs"
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sys.path.insert(1, funs)
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import CleanTweets
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#%%
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# get datafra,e
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dfClassify = pd.read_csv(senCSVPath, dtype=(object))
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# dataframe from csv
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dfClassify['fake'] = False
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#%%
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# https://huggingface.co/bvrau/covid-twitter-bert-v2-struth
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# HowTo:
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# https://huggingface.co/docs/transformers/main/en/model_doc/bert#transformers.BertForSequenceClassification
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# https://stackoverflow.com/questions/75932605/getting-the-input-text-from-transformers-pipeline
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pipe = pipeline("text-classification", model="/home/michael/Documents/PS/Data/collectTweets/models/CovClass/2023-08-15_05-56-50/")
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model = AutoModelForSequenceClassification.from_pretrained("/home/michael/Documents/PS/Data/collectTweets/models/CovClass/2023-08-15_05-56-50/")
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tokenizer = AutoTokenizer.from_pretrained("/home/michael/Documents/PS/Data/collectTweets/models/CovClass/2023-08-15_05-56-50/")
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# Source https://www.kaggle.com/code/daotan/tweet-analysis-with-transformers-bert
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dfClassify['cleanContent'] = dfClassify['rawContent'].apply(CleanTweets.preprocess_text)
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#%%
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# remove empty rows
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dfClassify.cleanContent.replace('',np.nan,inplace=True)
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dfClassify.dropna(subset=['cleanContent'], inplace=True)
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#%%
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timeStart = datetime.now() # start counting execution time
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max_length = 128
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dfClassify['input_ids'] = dfClassify['cleanContent'].apply(lambda x: tokenizer(x, max_length=max_length, padding="max_length",)['input_ids'])
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#train.rename(columns={'target': 'labels'}, inplace=True)
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#train.head()
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# %%
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dfClassify.to_csv(senCSVcClassificationPrepPath, encoding='utf-8', columns=['id', 'cleanContent'])
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#%%
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dataset = load_dataset("csv", data_files=senCSVcClassificationPrepPath)
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# %%from datetime import datetime
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#from tqdm.auto import tqdm
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#for out in tqdm(pipe(KeyDataset(dataset['train'], "cleanContent"))):
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# print(out)
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#%%
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output_labels = []
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output_score = []
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for out in pipe(KeyDataset(dataset['train'], "cleanContent"), batch_size=8, truncation="only_first"):
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output_labels.append(out['label'])
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output_score.append(out['score'])
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# [{'label': 'POSITIVE', 'score': 0.9998743534088135}]
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# Exactly the same output as before, but the content are passed
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# as batches to the model
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# %%
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dfClassify['output_label_topicCov'] = output_labels
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dfClassify['output_score_topicCov'] = output_score
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timeEnd = datetime.now()
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timeTotal = timeEnd - timeStart
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timePerTweet = timeTotal / 96
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print(f"Total classification execution time: {timeTotal} seconds")
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print(f"Time per tweet classification: {timePerTweet}")
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# %%
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dfClassify.to_csv(senCSVcClassificationResultPath, encoding='utf-8')
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# %%
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## corrections
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def encode_labels(label):
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if label == 'real':
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return 'True'
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elif label == 'fake':
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return 'False'
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return 0
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dfClassify['output_label_topicCov'] = dfClassify['output_label_topicCov'].apply(encode_labels)
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dfClassify.to_csv(senCSVcClassificationResultPath, encoding='utf-8')
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#still wrong, will be corrected in ClassificationFake.py
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