Topic modeling is a method of uncovering the main themes or topics within a large collection of documents.
It is an unsupervised learning technique that automatically identifies patterns of co-occurring words and assigns them to different topics.
The most common algorithm for topic modeling is Latent Dirichlet Allocation (LDA).
LDA assumes that each document is a mixture of various topics, and each topic is a distribution of words.
The output of topic modeling is a set of topics, where each topic represents a probability distribution over words.
It can be used to gain insights into large collections of text, identify key themes, and explore trends.
Topic modeling can be used for content analysis in fields like market research, customer feedback analysis, and sentiment analysis.
Topic modeling algorithms can be combined with other NLP techniques like sentiment analysis to perform more comprehensive analysis.