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| from os import write | |
| import time | |
| import pandas as pd | |
| import base64 | |
| from typing import Sequence | |
| import streamlit as st | |
| from sklearn.metrics import classification_report | |
| # from models import create_nest_sentences, load_summary_model, summarizer_gen, load_model, classifier_zero | |
| import models as md | |
| from utils import examples_load, example_long_text_load | |
| import json | |
| ex_text, ex_license, ex_labels, ex_glabels = examples_load() | |
| ex_long_text = example_long_text_load() | |
| # if __name__ == '__main__': | |
| ################################### | |
| ######## App Description ########## | |
| ################################### | |
| st.markdown("### Long Text Summarization & Multi-Label Classification") | |
| st.write("This app summarizes and then classifies your long text(s) with multiple labels using [BART Large CNN](https://huggingface.co/facebook/bart-large-cnn) for the summarization task and [BART Large MNLI](https://huggingface.co/facebook/bart-large-mnli) for the multi-labels matching. The keywords are independently generated using [KeyBERT](https://github.com/MaartenGr/KeyBERT) and not used in any downstream tasks.") | |
| st.write("__Inputs__: User enters their own custom text(s) and labels.") | |
| st.write("__Outputs__: A summary of the text, likelihood match score for each label and a downloadable csv of the results. \ | |
| Includes additional options to generate a list of keywords and/or evaluate results against a list of ground truth labels, if available.") | |
| ################################### | |
| ######## Example Input ########## | |
| ################################### | |
| example_button = st.button(label='See Example') | |
| if example_button: | |
| example_text = ex_long_text #ex_text | |
| display_text = 'Excerpt from Frankenstein:' + example_text + '"\n\n' + "[This is an excerpt from Project Gutenberg's Frankenstein. " + ex_license + "]" | |
| input_labels = ex_labels | |
| input_glabels = ex_glabels | |
| title_name = 'Frankenstein, Chapter 3' | |
| else: | |
| display_text = '' | |
| input_labels = '' | |
| input_glabels = '' | |
| title_name = 'Submitted Text' | |
| with st.form(key='my_form'): | |
| ################################### | |
| ######## Form: Step 1 ########## | |
| ################################### | |
| st.markdown("##### Step 1: Upload Text") | |
| text_input = st.text_area("Input any text you want to summarize & classify here (keep in mind very long text will take a while to process):", display_text) | |
| text_csv_expander = st.expander(label=f'Want to upload multiple texts at once? Expand to upload your text files below.', expanded=False) | |
| with text_csv_expander: | |
| st.markdown('##### Choose one of the options below:') | |
| st.write("__Option A:__") | |
| uploaded_text_files = st.file_uploader(label="Upload file(s) that end with the .txt suffix", | |
| accept_multiple_files=True, key = 'text_uploader', | |
| type='txt') | |
| st.write("__Option B:__") | |
| uploaded_csv_text_files = st.file_uploader(label='Upload a CSV file with two columns: "title" and "text"', | |
| accept_multiple_files=False, key = 'csv_text_uploader', | |
| type='csv') | |
| if text_input == display_text and display_text != '': | |
| text_input = example_text | |
| gen_keywords = st.radio( | |
| "Generate keywords from text? (independent from the input labels below)", | |
| ('Yes', 'No') | |
| ) | |
| gen_summary = st.radio( | |
| "Generate summary from text? (recommended for label matching below, but will take longer)", | |
| ('Yes', 'No') | |
| ) | |
| ################################### | |
| ######## Form: Step 2 ########## | |
| ################################### | |
| st.write('\n') | |
| st.markdown("##### Step 2: Enter Labels") | |
| labels = st.text_input('Enter possible topic labels, which can be either keywords and/or general themes (comma-separated):',input_labels, max_chars=2000) | |
| labels = list(set([x.strip() for x in labels.strip().split(',') if len(x.strip()) > 0])) | |
| labels_csv_expander = st.expander(label=f'Prefer to upload a list of labels instead? Click here to upload your CSV file.',expanded=False) | |
| with labels_csv_expander: | |
| uploaded_labels_file = st.file_uploader("Choose a CSV file with one column and no header, where each cell is a separate label", | |
| key='labels_uploader') | |
| ################################### | |
| ######## Form: Step 3 ########## | |
| ################################### | |
| st.write('\n') | |
| st.markdown("##### Step 3: Provide Ground Truth Labels (_Optional_)") | |
| glabels = st.text_input('If available, enter ground truth topic labels to evaluate results, otherwise leave blank (comma-separated):',input_glabels, max_chars=2000) | |
| glabels = list(set([x.strip() for x in glabels.strip().split(',') if len(x.strip()) > 0])) | |
| glabels_csv_expander = st.expander(label=f'Have a file with labels for the text? Click here to upload your CSV file.', expanded=False) | |
| with glabels_csv_expander: | |
| st.markdown('##### Choose one of the options below:') | |
| st.write("__Option A:__") | |
| uploaded_onetext_glabels_file = st.file_uploader("Single Text: Choose a CSV file with one column and no header, where each cell is a separate label", | |
| key = 'onetext_glabels_uploader') | |
| st.write("__Option B:__") | |
| uploaded_multitext_glabels_file = st.file_uploader('Multiple Text: Choose a CSV file with two columns "title" and "label", with the cells in the title column matching the name of the files uploaded in step #1.', | |
| key = 'multitext_glabels_uploader') | |
| # threshold_value = st.slider( | |
| # 'Select a threshold cutoff for matching percentage (used for ground truth label evaluation)', | |
| # 0.0, 1.0, (0.5)) | |
| submit_button = st.form_submit_button(label='Submit') | |
| st.write("_For improvments/suggestions, please file an issue here: https://github.com/pleonova/multi-label-summary-text_") | |
| ################################### | |
| ####### Model Load Time ######### | |
| ################################### | |
| with st.spinner('Loading pretrained models...'): | |
| start = time.time() | |
| summarizer = md.load_summary_model() | |
| s_time = round(time.time() - start,4) | |
| start = time.time() | |
| classifier = md.load_model() | |
| c_time = round(time.time() - start,4) | |
| start = time.time() | |
| kw_model = md.load_keyword_model() | |
| k_time = round(time.time() - start,4) | |
| st.spinner(f'Time taken to load various models: {k_time}s for KeyBERT model & {s_time}s for BART summarizer mnli model & {c_time}s for BART classifier mnli model.') | |
| # st.success(None) | |
| if submit_button or example_button: | |
| ################################### | |
| ######## Load Text Data ####### | |
| ################################### | |
| if len(text_input) == 0 and len(uploaded_text_files) == 0 and uploaded_csv_text_files is None: | |
| st.error("Enter some text to generate a summary") | |
| else: | |
| if len(text_input) != 0: | |
| text_df = pd.DataFrame.from_dict({'title': [title_name], 'text': [text_input]}) | |
| # OPTION A | |
| elif len(uploaded_text_files) != 0: | |
| st.markdown("### Text Inputs") | |
| st.write('Files concatenated into a dataframe:') | |
| file_names = [] | |
| raw_texts = [] | |
| for uploaded_file in uploaded_text_files: | |
| text = str(uploaded_file.read(), "utf-8") | |
| raw_texts.append(text) | |
| title_file_name = uploaded_file.name.replace('.txt','') | |
| file_names.append(title_file_name) | |
| text_df = pd.DataFrame({'title': file_names, | |
| 'text': raw_texts}) | |
| st.dataframe(text_df.head()) | |
| st.download_button( | |
| label="Download data as CSV", | |
| data=text_df.to_csv().encode('utf-8'), | |
| file_name='title_text.csv', | |
| mime='title_text/csv', | |
| ) | |
| # OPTION B | |
| elif uploaded_csv_text_files is not None: | |
| text_df = pd.read_csv(uploaded_csv_text_files) | |
| # Which input was used? If text area was used, ignore the 'title' | |
| if len(text_input) != 0: | |
| title_element = [] | |
| else: | |
| title_element = ['title'] | |
| ################################### | |
| ######## Text Chunks ########## | |
| ################################### | |
| with st.spinner('Breaking up text into more reasonable chunks (transformers cannot exceed a 1024 token max)...'): | |
| # For each body of text, create text chunks of a certain token size required for the transformer | |
| text_chunks_lib = dict() | |
| for i in range(0, len(text_df)): | |
| nested_sentences = md.create_nest_sentences(document=text_df['text'][i], token_max_length=1024) | |
| # For each chunk of sentences (within the token max) | |
| text_chunks = [] | |
| for n in range(0, len(nested_sentences)): | |
| tc = " ".join(map(str, nested_sentences[n])) | |
| text_chunks.append(tc) | |
| title_entry = text_df['title'][i] | |
| text_chunks_lib[title_entry] = text_chunks | |
| ################################ | |
| ######## Keywords ########## | |
| ################################ | |
| if gen_keywords == 'Yes': | |
| st.markdown("### Top Keywords") | |
| with st.spinner("Generating keywords from text..."): | |
| kw_dict = dict() | |
| text_chunk_counter = 0 | |
| for key in text_chunks_lib: | |
| keywords_list = [] | |
| for text_chunk in text_chunks_lib[key]: | |
| text_chunk_counter += 1 | |
| keywords_list += md.keyword_gen(kw_model, text_chunk) | |
| kw_dict[key] = dict(keywords_list) | |
| # Display as a dataframe | |
| kw_df0 = pd.DataFrame.from_dict(kw_dict).reset_index() | |
| kw_df0.rename(columns={'index': 'keyword'}, inplace=True) | |
| kw_df = pd.melt(kw_df0, id_vars=['keyword'], var_name='title', value_name='score').dropna() | |
| kw_column_list = ['keyword', 'score'] | |
| kw_df = kw_df[kw_df['score'] > 0.25][title_element + kw_column_list].sort_values(title_element + ['score'], ascending=False).reset_index().drop(columns='index') | |
| st.dataframe(kw_df) | |
| st.download_button( | |
| label="Download data as CSV", | |
| data=kw_df.to_csv().encode('utf-8'), | |
| file_name='title_keywords.csv', | |
| mime='title_keywords/csv', | |
| ) | |
| ################################### | |
| ########## Summarize ########## | |
| ################################### | |
| if gen_summary == 'Yes': | |
| st.markdown("### Summary") | |
| with st.spinner(f'Generating summaries for {len(text_df)} texts consisting of a total of {text_chunk_counter} chunks (this may take a minute)...'): | |
| sum_dict = dict() | |
| for i, key in enumerate(text_chunks_lib): | |
| with st.expander(label=f'({i+1}/{len(text_df)}) Expand to see intermediate summary generation details for: {key}', expanded=False): | |
| # for key in text_chunks_lib: | |
| summary = [] | |
| for num_chunk, text_chunk in enumerate(text_chunks_lib[key]): | |
| chunk_summary = md.summarizer_gen(summarizer, sequence=text_chunk, maximum_tokens=400, minimum_tokens=100) | |
| summary.append(chunk_summary) | |
| st.markdown(f"###### Original Text Chunk {num_chunk+1}/{len(text_chunks)}" ) | |
| st.markdown(text_chunk) | |
| st.markdown(f"###### Partial Summary {num_chunk+1}/{len(text_chunks)}") | |
| st.markdown(chunk_summary) | |
| # Combine all the summaries into a list and compress into one document, again | |
| final_summary = "\n\n".join(list(summary)) | |
| sum_dict[key] = [final_summary] | |
| sum_df = pd.DataFrame.from_dict(sum_dict).T.reset_index() | |
| sum_df.columns = ['title', 'summary_text'] | |
| # TO DO: Make sure summary_text does not exceed the token length | |
| st.dataframe(sum_df) | |
| st.download_button( | |
| label="Download data as CSV", | |
| data=sum_df.to_csv().encode('utf-8'), | |
| file_name='title_summary.csv', | |
| mime='title_summary/csv', | |
| ) | |
| ################################### | |
| ########## Classifier ######### | |
| ################################### | |
| if ((len(text_input) == 0 and uploaded_text_files is None and uploaded_csv_text_files is None) | |
| or (len(labels) == 0 and uploaded_labels_file is None)): | |
| st.error('Enter some text and at least one possible topic to see label predictions.') | |
| else: | |
| if gen_summary == 'Yes': | |
| st.markdown("### Top Label Predictions on Summary vs Full Text") | |
| else: | |
| st.markdown("### Top Label Predictions on Full Text") | |
| if uploaded_labels_file is not None: | |
| labels_df = pd.read_csv(uploaded_labels_file, header=None) | |
| label_list = labels_df.iloc[:, 0] | |
| else: | |
| label_list = labels | |
| with st.spinner('Matching labels...(may take some time)'): | |
| if gen_summary == 'Yes': | |
| labels_sum_col_list = ['title', 'label', 'scores_from_summary'] | |
| labels_sum_df = pd.DataFrame(columns=labels_sum_col_list) | |
| labels_full_col_list = ['title', 'label', 'scores_from_full_text'] | |
| labels_full_df = pd.DataFrame(columns=labels_full_col_list) | |
| for i in range(0, len(text_df)): | |
| if gen_summary == 'Yes': | |
| s_topics, s_scores = md.classifier_zero(classifier, sequence=sum_df['summary_text'][i], labels=label_list, multi_class=True) | |
| ls_df = pd.DataFrame({'label': s_topics, 'scores_from_summary': s_scores}) | |
| ls_df['title'] = text_df['title'][i] | |
| labels_sum_df = pd.concat([labels_sum_df, ls_df[labels_sum_col_list]]) | |
| f_topics, f_scores = md.classifier_zero(classifier, sequence=text_df['text'][i], labels=label_list, multi_class=True) | |
| lf_df = pd.DataFrame({'label': f_topics, 'scores_from_full_text': f_scores}) | |
| lf_df['title'] = text_df['title'][i] | |
| labels_full_df = pd.concat([labels_full_df, lf_df[labels_full_col_list]]) | |
| with st.expander(f'({i+1}/{len(text_df)}) See intermediate label matching results for: {text_df["title"][i]}'): | |
| if gen_summary == 'Yes': | |
| st.dataframe(pd.merge(ls_df, lf_df, on=['title','label'])) | |
| else: | |
| st.dataframe(lf_df) | |
| if gen_summary == 'Yes': | |
| label_match_df = pd.merge(labels_sum_df, labels_full_df, on=['title', 'label']) | |
| else: | |
| label_match_df = labels_full_df.copy() | |
| ################################### | |
| ####### Ground Truth Labels ###### | |
| ################################### | |
| if len(glabels) > 0: | |
| gdata = pd.DataFrame({'label': glabels}) | |
| join_list = ['label'] | |
| elif uploaded_onetext_glabels_file is not None: | |
| gdata = pd.read_csv(uploaded_onetext_glabels_file, header=None) | |
| join_list = ['label'] | |
| gdata.columns = join_list | |
| elif uploaded_multitext_glabels_file is not None: | |
| gdata = pd.read_csv(uploaded_multitext_glabels_file) | |
| join_list = ['title', 'label'] | |
| gdata.columns = join_list | |
| if len(glabels) > 0 or uploaded_onetext_glabels_file is not None or uploaded_multitext_glabels_file is not None: | |
| gdata['correct_match'] = True | |
| label_match_df = pd.merge(label_match_df, gdata, how='left', on=join_list) | |
| label_match_df['correct_match'].fillna(False, inplace=True) | |
| st.dataframe(label_match_df) #.sort_values(['title', 'label'], ascending=[False, False])) | |
| st.download_button( | |
| label="Download data as CSV", | |
| data=label_match_df.to_csv().encode('utf-8'), | |
| file_name='title_label_sum_full.csv', | |
| mime='title_label_sum_full/csv', | |
| ) | |
| # if len(glabels) > 0: | |
| # st.markdown("### Evaluation Metrics") | |
| # with st.spinner('Evaluating output against ground truth...'): | |
| # | |
| # section_header_description = ['Summary Label Performance', 'Original Full Text Label Performance'] | |
| # data_headers = ['scores_from_summary', 'scores_from_full_text'] | |
| # for i in range(0,2): | |
| # st.markdown(f"###### {section_header_description[i]}") | |
| # report = classification_report(y_true = data2[['is_true_label']], | |
| # y_pred = (data2[[data_headers[i]]] >= threshold_value) * 1.0, | |
| # output_dict=True) | |
| # df_report = pd.DataFrame(report).transpose() | |
| # st.markdown(f"Threshold set for: {threshold_value}") | |
| # st.dataframe(df_report) | |
| st.success('All done!') | |
| st.balloons() | |