Using Language Models in IR
{"Image DocumentName": "Using Language Models in IR", "Image ImageDescription": "Treat each document as the basis for a model (e.g., unigram sufficient statistics) Rank document d based on P(d | q) P(d | q) = P(q | d) x P(d) / P(q) P(q) is the same for all documents, so ignore. P(d) [the prior] is often treated as the same for all d. But we could use criteria like authority, length, genre. P(q | d) is the probability of q given d\u2019s model. Very general formal approach.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}