Phrase: A natural, meaningful, unambiguous semantic unit

Mining semantically meaningful phrases Transform text data from word granularity to phrase granularity Enhance the power and efficiency at manipulating unstructured data using database technology 4Mining Phrases: Why Not Use NLP Methods? Phrase mining was originated from the NLP community Name Entity Recognition (NER) can only identify noun phrases Chunking can provide some phrase candidates Most NLP methods need heavy training and complex labeling Costly and may not be transferable May not fit domain-specific, dynamic, emerging applications Scientific domains Query log