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Biterm Topic Model(BTM) <br />
• Biterm: co-occurred word pairs in short text <br />
– "visit apple store" -> "visit apple", "visit store", "apple store“!<br />
• Model the generation of biterms with latent topic structure <br />
– a topic ~ a probability distribution over words <br />
– a corpus ~ a mixture of topics <br />
– a biterm ~ two i.i.d sample drawn from one topic