Sentiment Analysis tools
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Pattern is a web mining module for the Python programming language. It bundles tools for data retrieval (Google + Twitter + Wikipedia API, web spider, HTML DOM parser), text analysis (rule-based shallow parser, WordNet interface, syntactical + semantical n-gram search algorithm, tf-idf + cosine similarity + LSA metrics), clustering and classification ( k -means, k -NN, SVM), and data visualization (graph networks). The module is bundled with 30+ example scripts and 350+ unit tests. Download