INFORMATION EXTRACTION FROM QUERIES Ed Snelson, Joaquin Quiñonero Candela, Ralf Herbrich, Thore Graepel.

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Presentation transcript:

INFORMATION EXTRACTION FROM QUERIES Ed Snelson, Joaquin Quiñonero Candela, Ralf Herbrich, Thore Graepel

Information extraction from queries What do people want to know about? Marius Paşca, Google: Organizing and Searching the World Wide Web of Facts Step Two: Harnessing the Wisdom of the Crowds Classes, Instances, and Attributes Queries: questions, not answers

Templates Query: height of tom cruise

Probabilistic query modelling

Key details EP message passing for inference within single query model ADF single pass through queries Sparse messages within query Bootstrap from initial seed sets of instances/attributes Directed processing of queries based on current top beliefs

Data 10 months, Live Search query logs 100 Million unique queries, with associated counts Preliminary experiments on small specific subsets e.g. 50,000 unique queries related to actors, cars and national parks

Seed lists

Actors InstancesAttributes tom cruisemovies brad pittpictures johnny deppdealer.com matt damonphotos george clooneyangelina jolie cameron diaznude scarlett johanssonbiography mel gibsonnews grand canyonheight sharon stonewedding

Cars InstancesAttributes dealer{Year} honda civicparts honda accordhybrid ford mustangdealer dodge chargerused toyota camryworld ford exploreraccessories toyota corollaford ford focuscleveland plain dodge durangowachovia

National Parks InstancesAttributes grand canyonnational park yellowstonepark yosemitetours redwoodlodging denalihotels evergladeslodge algonquinwest joshua treeskywalk west yellowstonegmc shenandoahcollege

Templates [Inst] [Attr] [Attr] [Inst] {Year} [Inst] [Attr] [Attr] of [Inst] [Inst] and [Attr] [Attr] and [Inst] [Attr] in [Inst] the [Attr] [Inst] how [Attr] is [Inst] [Attr] [Inst] coupe [Attr] [Inst] parts the [Inst] [Attr] [Inst] 's [Attr] [Inst] in [Attr]

Future improvements Class/Attribute dependent templates A garbage class to deal with noise Reducing sensitivity to order of processing initial queries Disambiguation, synonyms etc. Use of part-of-speech tagger Combination with standard hand-crafted entity extraction techniques