Amazon Technologies, Inc.

Lam Duy Nguyen

Michael Paul Touloumtzis

Cyrus Khoshnevisan

Abhishek Kansal

Christopher Robin Peery

Nigel St John Pope

Yanping Huang

An item categorization service is described that automatically categorizes items of interest to a user. The user may possess an item that they wish to offer for sale using a network-based service. The user may submit item information to the item categorization service to categorize the item of interest. Upon receipt, the categorization service may assess the relevance of the item information to hierarchically organized categories maintained by the network-based service. Categories having the highest relevance may be identified as first category candidates. The deepest common ancestor of the first category candidates may be identified the first category. One or more categories, representing sub-categories of the first category, may be identified as and subjected to relevance assessment. Those sub-categories having the highest relevance may be identified as second category candidates. The deepest common ancestor of the second category candidates may be identified as a second category for the item of interest.

Systems and methods for automatic item classification

Disclosed are various embodiments for a node selection application. Utility nodes are selected from a taxonomy according to utility scores with respect to a search query. Relevant nodes are selected from the taxonomy according to relevance scores with respect to the search query. A collection of taxonomy nodes is recommended according to a convergence between the utility nodes and the relevant nodes.

Determining taxonomy nodes for browsing

Disclosed are various embodiments for a search query segmentation application. Search queries are broken into segments. Each of the segments is assigned a taxonomy node from a catalog of items. Search results are generated as those items included in the taxonomy nodes assigned to the search query segments.

Search query segmentation

An item categorization service is described that automatically categorizes items of interest to a user. The user may possess an item that they wish to offer for sale using a network-based service. The user may submit item information to the item categorization service to categorize the item of interest. Upon receipt, the categorization service may assess the relevance of the item information to hierarchically organized categories maintained by the network-based service. Categories having the highest relevance may be identified as first category candidates. The deepest common ancestor of the first category candidates may be identified the first category. One or more categories, representing sub-categories of the first category, may be identified and subjected to relevance assessment. Those sub-categories having the highest relevance may be identified as second category candidates. The deepest common ancestor of the second category candidates may be identified as a second category for the item of interest.

An item categorization service is described that automatically categorizes items of interest to a user. The user may possess an item that they wish to offer for sale using a network-based service. The user may submit item information to the categorization service to categorize the item of interest. Upon receipt, the categorization service may assess the relevance of the item information to hierarchically organized categories maintained by the network-based service. Categories having the highest relevance may be identified as first category candidates. The deepest common ancestor of the first category candidates may be identified the first category. One or more categories related to the first category may also be identified and subjected to relevance assessment. Those related categories having the highest relevance may be identified as second category candidates. The deepest common ancestor of the second category candidates may be identified as a second category for the item of interest.

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Seattle, WA, United States of America

Lam Duy Nguyen