Ebay, Incorporated

Paypal, Inc.

Davide Libenzi

Nicholas Whyte

Richard Dean Henderson

Anand Lakshminath

Guanglei Song

Prasad Sriram

David Goldberg

Michael Ching

Swati Agarwal

Amit Basu

Andrew John Melnick

Thomas Pan

Raffi Tutundjian

Pradeep Sankaranthi

Miroslav Melichar

Jagadish Nallapaneni

Carson Hoffacker

Gang He

Mel Sun

Vamsi Salaka

Marco Pennacchiotti

Timothy Bethea

Disclosed is a system comprising a computer-readable storage medium storing at least one program, and a computer-implemented method for generating search results. A data access module accesses search results data indicative of a plurality items and that is indicative of ranking values of the plurality of items. A controller module generates page data based on the search results data. The controller module selects a first item from the plurality of items. A diversification module accesses a first rule of the page data. The diversification module determines a deviance value and a reordering-cost value of a second item from the plurality of items. The controller module can select, based at least on a first combination of the deviance and the reordering-cost values of the second item, the second item for placement ahead of the first item on the page data.

Diversifying search results

Methods and systems to build and utilize a search infrastructure are described. The system generates index information components in real-time based on a database that is time-stamped. The system updates index information at a plurality of query node servers based on the index information components. A query engine receives a search query from a client machine and identifies search results based on the query and the index information. The system communicates the search results, over the network, to the client machine.

Systems and methods to build and utilize a search infrastructure

Example embodiments described herein disclose systems and methods for near-identical multi-faceted entity identification within search results from an online marketplace. The online marketplace may be or include a group of one or more server machines configured to provide one or more online marketplace services, including the near-identical multi-faceted entity identification system. A user device may accordingly request and receive, from the online marketplace, a set of item listings based on submitted search criteria. The online marketplace may then access the set of item listings and identify one or more similar item listings among the set of item listings in order to demote a ranking of the similar item listings within the set.

Near-identical multi-faceted entity identification in search

Disclosed are a system comprising a computer-readable storage medium storing at least one program, and a computer-implemented method for generating search results. A data access module accesses search results data indicative of a plurality items and that is indicative of ranking values of the plurality of items. A controller module generates page data based on the search results data. The controller module selects a first item from the plurality of items. A diversification module accesses a first rule of the page data. The diversification module determines a deviance value and a reordering-cost value of a second item from the plurality of items. The controller module can select, based at least on a first combination of the deviance and the reordering-cost values of the second item, the second item for placement ahead of the first item on the page data.

Systems and methods to configure a query language using an operator dictionary are described. The system receives, from a first user, a search query to search for document information in a database. The system determines that terms of the search query from the first user are in accordance with dictionary information that corresponds to the first user. The dictionary information includes a first list of compatible query operators. The system applies the search query to the index data structure in the database to identify the document information. The system sends an electronic interface to the first user that includes the document information.

System and methods to configure a query language using an operator dictionary

A method and a system to configure a query language using an operator dictionary are provided. Dictionary information that corresponds to a first user is generated. The dictionary information includes a first list of compatible query operators and a description of compatible data types that correspond to each operator in the first list of query operators. A search query to search for document information in a database is received from a first user. The database includes an inverted index. Terms of the search query from the first user are determined to be in accordance with the dictionary information that corresponds to the first user. The search query is applied to the inverted index in the database to identify the document information. The document information is sent to the first user.

An input query can be spell checked by first parsing the input query into one or more tokens. The one or more tokens are then compared against spell storage tables to derive alternative tokens. A spell cursor is launched, with the spell cursor calculating scores for permutations of the tokens and alternative tokens, and the scores representing a likelihood that a user intended to use the permutation as the input query. A memory table may then be formed including the permutations and scores. The memory table can then be passed to a column cursor, the column cursor designed to form an output table of results based on queries to a database using the permutations.

Spell check using column cursor

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San Jose, CA, United States of America

Davide Libenzi