Is there any way I can map generated topic from LDA, NMF and BERTopic to the list of documents and identify to which topic it belongs to? Click here to view Example
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I am not an expert in NMF and tried LDA 3-4 years ago. However, I have an idea about BERTopic. In BERTopic when you fit the data, you get two outputs topics and probs (if you set calculate_probabilities=True). Using topics you easily get which document is assigned to which topic. For Example: topic_model = BERTopic(calculate_probabilities=True) topics, probs = topic_model.fit_transform(documents) print(topics)
Example: number of documents=10, number of topics retrieved=3 (-1,0,1) when we print the topics, the output is[1, 0, -1, -1, 0, 0, 0, 1, 0, 1], means document0 is assigned to topic 1, document1 is assigned to topic 0, document3 is assigned to topic -1 (i.e. outlier) and so on. Hope it helps a bit