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| from langchain import PromptTemplate | |
| from langchain.chat_models import ChatOpenAI | |
| from langchain.chains.summarize import load_summarize_chain | |
| from langchain.text_splitter import RecursiveCharacterTextSplitter | |
| from langchain.document_loaders import DirectoryLoader | |
| from wordcloud import WordCloud, STOPWORDS | |
| import numpy as np | |
| from langchain.embeddings import OpenAIEmbeddings | |
| from sklearn.cluster import KMeans | |
| from sklearn.metrics import silhouette_score | |
| import os | |
| from langchain.docstore.document import Document | |
| os.environ["OPENAI_API_KEY"] = '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' | |
| class Extract_Summary: | |
| def __init__(self,text_input, file_path=None, chunks=2000, chunking_strategy=None, LLM_Model="gpt-3.5-turbo", temperature=1, top_p=None, top_k=None): | |
| self.chunks = chunks | |
| self.file_path = file_path | |
| self.text_input = text_input | |
| self.chuking_strategy = chunking_strategy | |
| self.LLM_Model = LLM_Model | |
| self.temperature = temperature | |
| self.top_p = top_p | |
| self.top_k = top_k | |
| def doc_summary(self, docs): | |
| # print(f'You have {len(docs)} documents') | |
| num_words = sum([len(doc.page_content.split(" ")) for doc in docs]) | |
| # print(f"You have {num_words} words in documents") | |
| return num_words, len(docs) | |
| def load_docs(self): | |
| if self.file_path is not None: | |
| docs = DirectoryLoader(self.file_path, glob="**/*.txt").load() | |
| else: | |
| docs = Document(page_content=f"{self.text_input}", metadata={"source": "local"}) | |
| docs = [docs] | |
| # docs = self.text_input | |
| tokens, documents_count = self.doc_summary(docs) | |
| if documents_count > 8 or tokens > 6000: ## Add token checks as well. Add Model availabilty checks | |
| docs = self.chunk_docs(docs) ## Handling Large Document with token more than 6000 | |
| docs = self.summarise_large_documents(docs) | |
| tokens, documents_count = self.doc_summary(docs) | |
| if tokens > 2000: | |
| docs = self.chunk_docs(docs) | |
| chain_type = 'map_reduce' | |
| else: | |
| chain_type = 'stuff' | |
| print("=="*20) | |
| print(tokens) | |
| print(chain_type) | |
| return docs, chain_type | |
| ## Add ensemble retriver for this as well. | |
| def summarise_large_documents(self, docs): | |
| print("=="*20) | |
| print('Orignial Docs size : ' ,len(docs)) | |
| embeddings = OpenAIEmbeddings() | |
| vectors = embeddings. embed_documents([x.page_content for x in docs]) | |
| # Silhoute Score | |
| n_clusters_range = range(2, 11) | |
| silhouette_scores = [] | |
| for i in n_clusters_range: | |
| kmeans = KMeans(n_clusters=i, init='k-means++', | |
| max_iter=300, n_init=10, random_state=0) | |
| kmeans.fit(vectors) | |
| score = silhouette_score(vectors, kmeans.labels_) | |
| silhouette_scores.append(score) | |
| optimal_n_clusters = n_clusters_range[np.argmax(silhouette_scores)] | |
| # n_clusters = 5 | |
| kmeans = KMeans(n_clusters=optimal_n_clusters, | |
| random_state=42).fit(vectors) | |
| # Getting documents closers to centeriod | |
| closest_indices = [] | |
| # Loop through the number of clusters you have | |
| for i in range(optimal_n_clusters): | |
| # Get the list of distances from that particular cluster center | |
| distances = np.linalg.norm( | |
| vectors - kmeans.cluster_centers_[i], axis=1) | |
| # Find the list position of the closest one (using argmin to find the smallest distance) | |
| closest_index = np.argmin(distances) | |
| # Append that position to your closest indices list | |
| closest_indices.append(closest_index) | |
| sorted_indices = sorted(closest_indices) | |
| selected_docs = [docs[doc] for doc in sorted_indices] | |
| print('Selected Docs size : ' ,len(selected_docs)) | |
| return selected_docs | |
| def chunk_docs(self, docs): | |
| text_splitter = RecursiveCharacterTextSplitter( | |
| chunk_size=self.chunks, | |
| chunk_overlap=50, | |
| length_function=len, | |
| is_separator_regex=False, | |
| ) | |
| splitted_document = text_splitter.split_documents(docs) | |
| return splitted_document | |
| def get_key_information_stuff(self): | |
| prompt_template = """ | |
| Extract Key Informtion from the text below. This key information can include People Names & their Role/rank, Locations, Organization,Nationalities,Religions, | |
| Events such as Historical, social, sporting and naturally occurring events, Products , Address & email, URL, Date & Time, Provide the list of Key information each | |
| should be labeled with thier crossponding category.if key information related to category is not present, dont add that category in Response. | |
| {text} | |
| """ | |
| prompt = PromptTemplate( | |
| template=prompt_template, input_variables=['text']) | |
| return prompt | |
| def get_key_information_map_reduce(self): | |
| map_prompts = """ | |
| Extract Key Informtion from the text below. This key information can include People Names & their Role/rank, Locations, Organization,Nationalities,Religions, | |
| Events such as Historical, social, sporting and naturally occurring events, Products , Address & email, URL, Date & Time, Provide the list of Key information each | |
| should be labeled with thier crossponding category.if key information related to category is not present, dont add that category in Response. | |
| {text} | |
| """ | |
| combine_prompt = """ | |
| Below Text contains Key Information that was extracted from text. You job is to combine the Key Information and Return the results.This key information can include People Names & their Role/rank, | |
| Locations, Organization,Nationalities,Religions,Events such as Historical, social, sporting and naturally occurring events, Products , | |
| Address & email, URL, Date & Time, Provide the list of Key information each should be labeled with thier crossponding category. | |
| if key information related to category is not present, dont add that category in Response. | |
| {text} | |
| """ | |
| map_template = PromptTemplate(template=map_prompts,input_variables=['text'] | |
| ) | |
| # combine_template = PromptTemplate(template=combine_prompt,input_variables=['Summary_type','Summary_strategy','Target_Person_type','Response_lenght','Writing_style','text'] | |
| # ) | |
| combine_template = PromptTemplate(template=combine_prompt,input_variables=['text']) | |
| return map_template, combine_template | |
| def get_stuff_prompt(self): | |
| prompt_template = """ | |
| Write a {Summary_type} and {Summary_strategy} for {Target_Person_type} lenght of the summary should be of {Response_length} words and writing style should be of {Writing_style}. | |
| From the text below by identifying most important topics based on their importance in text corpus and summary should be based on these important topics. | |
| {text} | |
| """ | |
| # prompt = PromptTemplate.from_template(prompt_template,input_variables=['Summary_type','Summary_strategy','Target_Person_type','Response_lenght','Writing_style','text']) | |
| prompt = PromptTemplate( | |
| template=prompt_template, input_variables=['Summary_type','Summary_strategy','Target_Person_type','Response_length','Writing_style','text']) | |
| return prompt | |
| def define_prompts(self): | |
| map_prompts = """ | |
| "Identify the key topics in the following text. in your response only add the most relevant and most important topics and Concised yet eloborative summary of text below. | |
| Dont add all the topics that you find.if you didnt find any important topic,dont return anything in response.Also provide me importance score of each idenfied topics out of 1. | |
| 'Your response should be like this , eg: Summary of text: blah blah blah,list of comma saperated topic names `Topic 1 Topic 2 Topic 3` | |
| and list of comma saperated importance scores for these topics `1 , 0.5,0.2`, so response should be formated like this. | |
| Summary: | |
| blah Blah blah | |
| Topic Names : Topic 1, Topic 2, Topic 3 | |
| Importance Score: 1,0.4,0.3 | |
| {text} | |
| """ | |
| combine_prompt = """ | |
| Here is list of summaries ,Topics Names and thier respective importance score that were extracted from text. | |
| your job is to provide best possible summary based on the list of summaries below and Use most important topics present based on thier importance score. | |
| Write a {Summary_type} and {Summary_strategy} for {Target_Person_type} lenght of the summary should be of {Response_length} words and writing style should be of {Writing_style}. | |
| {text} | |
| output Format should be like this.Dont try Return to multiple summaries.Only return one combined summary for above mentioned summaries. | |
| Summary: | |
| blah blah blah | |
| """ | |
| map_template = PromptTemplate(template=map_prompts, input_variables=['text'] | |
| ) | |
| combine_template = PromptTemplate( | |
| template=combine_prompt, input_variables=['Summary_type','Summary_strategy','Target_Person_type','Response_length','Writing_style','text']) | |
| return map_template, combine_template | |
| # pass | |
| def define_chain(self,Summary_type,Summary_strategy, | |
| Target_Person_type,Response_length,Writing_style,chain_type=None,key_information=False): | |
| docs, chain_type = self.load_docs() | |
| llm = ChatOpenAI(model='gpt-3.5-turbo', temperature=0) | |
| if chain_type == 'stuff': | |
| if key_information: | |
| prompt = self.get_key_information_stuff() | |
| else: | |
| prompt = self.get_stuff_prompt() | |
| chain = load_summarize_chain( | |
| llm=llm, chain_type='stuff', verbose=False,prompt=prompt) | |
| elif chain_type == 'map_reduce': | |
| if key_information: | |
| map_prompts, combine_prompt = self.get_key_information_map_reduce() | |
| else: | |
| map_prompts, combine_prompt = self.define_prompts() | |
| chain = load_summarize_chain( | |
| llm=llm, map_prompt=map_prompts, combine_prompt=combine_prompt, chain_type='map_reduce', verbose=False) | |
| # elif chain_type == 'refine': | |
| # chain = load_summarize_chain(llm=llm, question_prompt=map_prompts, | |
| # refine_prompt=combine_prompt, chain_type='refine', verbose=False) | |
| if ~key_information: | |
| output = chain.run(Summary_type=Summary_type,Summary_strategy=Summary_strategy, | |
| Target_Person_type=Target_Person_type,Response_length=Response_length,Writing_style=Writing_style,input_documents = docs) | |
| else: | |
| output = chain.run(input_documents = docs) | |
| # self.create_wordcloud(output=output) | |
| # display(Markdown(f"Text: {docs}")) | |
| # display(Markdown(f"Summary Response: {output}")) | |
| return output | |
| def create_wordcloud(self, output): | |
| wc = WordCloud(stopwords=STOPWORDS, height=500, width=300) | |
| wc.generate(output) | |
| wc.to_file('WordCloud.png') | |
| class AudioBookNarration: | |
| def __init__(self,text_input ,file_path=None, chunks=2000, chunking_strategy=None, LLM_Model="gpt-3.5-turbo", temperature=1, top_p=None, top_k=None): | |
| self.chunks = chunks | |
| self.file_path = file_path | |
| self.text_input = text_input | |
| self.chuking_strategy = chunking_strategy | |
| self.LLM_Model = LLM_Model | |
| self.temperature = temperature | |
| self.top_p = top_p | |
| self.top_k = top_k | |
| def doc_summary(self, docs): | |
| # print(f'You have {len(docs)} documents') | |
| num_words = sum([len(doc.page_content.split(" ")) for doc in docs]) | |
| # print(f"You have {num_words} words in documents") | |
| return num_words, len(docs) | |
| def load_docs(self): | |
| if self.file_path is not None: | |
| docs = DirectoryLoader(self.file_path, glob="**/*.txt").load() | |
| else: | |
| docs = Document(page_content=f"{self.text_input}", metadata={"source": "local"}) | |
| docs = [docs] | |
| # docs = self.text_input | |
| tokens, documents_count = self.doc_summary(docs) | |
| if documents_count > 8 or tokens > 6000: ## Add token checks as well. Add Model availabilty checks | |
| docs = self.chunk_docs(docs) ## Handling Large Document with token more than 6000 | |
| docs = self.summarise_large_documents(docs) | |
| tokens, documents_count = self.doc_summary(docs) | |
| if tokens > 2000: | |
| docs = self.chunk_docs(docs) | |
| chain_type = 'map_reduce' | |
| else: | |
| chain_type = 'stuff' | |
| print("=="*20) | |
| print(tokens) | |
| print(chain_type) | |
| return docs, chain_type | |
| ## Add ensemble retriver for this as well. | |
| def summarise_large_documents(self, docs): | |
| print("=="*20) | |
| print('Orignial Docs size : ' ,len(docs)) | |
| embeddings = OpenAIEmbeddings() | |
| vectors = embeddings. embed_documents([x.page_content for x in docs]) | |
| # Silhoute Score | |
| n_clusters_range = range(2, 11) | |
| silhouette_scores = [] | |
| for i in n_clusters_range: | |
| kmeans = KMeans(n_clusters=i, init='k-means++', | |
| max_iter=300, n_init=10, random_state=0) | |
| kmeans.fit(vectors) | |
| score = silhouette_score(vectors, kmeans.labels_) | |
| silhouette_scores.append(score) | |
| optimal_n_clusters = n_clusters_range[np.argmax(silhouette_scores)] | |
| # n_clusters = 5 | |
| kmeans = KMeans(n_clusters=optimal_n_clusters, | |
| random_state=42).fit(vectors) | |
| # Getting documents closers to centeriod | |
| closest_indices = [] | |
| # Loop through the number of clusters you have | |
| for i in range(optimal_n_clusters): | |
| # Get the list of distances from that particular cluster center | |
| distances = np.linalg.norm( | |
| vectors - kmeans.cluster_centers_[i], axis=1) | |
| # Find the list position of the closest one (using argmin to find the smallest distance) | |
| closest_index = np.argmin(distances) | |
| # Append that position to your closest indices list | |
| closest_indices.append(closest_index) | |
| sorted_indices = sorted(closest_indices) | |
| selected_docs = [docs[doc] for doc in sorted_indices] | |
| print('Selected Docs size : ' ,len(selected_docs)) | |
| return selected_docs | |
| def chunk_docs(self, docs): | |
| text_splitter = RecursiveCharacterTextSplitter( | |
| chunk_size=self.chunks, | |
| chunk_overlap=50, | |
| length_function=len, | |
| is_separator_regex=False, | |
| ) | |
| splitted_document = text_splitter.split_documents(docs) | |
| return splitted_document | |
| def get_stuff_prompt(self): | |
| prompt_template = """ | |
| Create a {Narration_style} narration for this below text. This narration will be used for audiobook generation. | |
| So provide the output that is verbose, easier to understand and full of expressions. | |
| {text} | |
| """ | |
| prompt = PromptTemplate( | |
| template=prompt_template, input_variables=['Narration_style','text']) | |
| return prompt | |
| def define_prompts(self): | |
| map_prompts = """ | |
| Create a {Narration_style} narration for this below text. This narration will be used for audiobook generation. | |
| So provide the output that is verbose, easier to understand and full of expressions. | |
| {text} | |
| """ | |
| combine_prompt = """ | |
| Below are the list of text that represent narration from the text. | |
| Your job is to combine these narrations and craete one verbose,easier to understand and full of experssions {Narration_style} narration. | |
| {text} | |
| """ | |
| map_template = PromptTemplate(template=map_prompts, input_variables=['Narration_style','text'] | |
| ) | |
| combine_template = PromptTemplate( | |
| template=combine_prompt, input_variables=['Narration_style','text']) | |
| return map_template, combine_template | |
| # pass | |
| def define_chain(self,Narration_style=None,chain_type=None): | |
| docs, chain_type = self.load_docs() | |
| llm = ChatOpenAI(model='gpt-3.5-turbo', temperature=0) | |
| if chain_type == 'stuff': | |
| prompt = self.get_stuff_prompt() | |
| chain = load_summarize_chain( | |
| llm=llm, chain_type='stuff', verbose=False,prompt=prompt) | |
| elif chain_type == 'map_reduce': | |
| map_prompts, combine_prompt = self.define_prompts() | |
| chain = load_summarize_chain( | |
| llm=llm, map_prompt=map_prompts, combine_prompt=combine_prompt, chain_type='map_reduce', verbose=False) | |
| output = chain.run(Narration_style = Narration_style,input_documents = docs) | |
| # self.create_wordcloud(output=output) | |
| # display(Markdown(f"Text: {docs}")) | |
| # display(Markdown(f"Summary Response: {output}")) | |
| return output | |