Abstract: A method for performing a search includes receiving a search query having one or more query terms from a remote device and generating a collection of one or more analyzed tokens based on the search query. The analyzed token collection is indicative of at least a subset of the query term(s). The method includes inputting the analyzed token collection into different parsers that each parse the analyzed token collection and/or the search query according to a parsing operation specific to the parser and output a parsed query including a list of one or more parsed tokens. Each parsed token includes a string, and at least one parsed token of at least one of the parsed queries includes one or more properties of the string. The method further includes generating a retrieval query based on the parsed queries outputted by the parsers and generating search results based on the retrieval query.

Abstract: A method for performing a search includes receiving a search query having one or more query terms from a remote device and generating a collection of one or more analyzed tokens based on the search query. The analyzed token collection is indicative of at least a subset of the query term(s). The method includes inputting the analyzed token collection into different parsers that each parse the analyzed token collection and/or the search query according to a parsing operation specific to the parser and output a parsed query including a list of one or more parsed tokens. Each parsed token includes a string, and at least one parsed token of at least one of the parsed queries includes one or more properties of the string. The method further includes generating a retrieval query based on the parsed queries outputted by the parsers and generating search results based on the retrieval query.

Abstract: According to another embodiment of the invention, an approach is provided for estimating how a particular user would rate a particular item from a plurality of items. The approach is applicable to any type of items, including rental items such as movies, music and games, and the invention is not limited to any particular type of item. One or more items from the plurality of items that have ratings similar to the particular item are identified. Then, one or more other users are identified that have given ratings to the one or more items that are substantially similar to ratings given by the particular user to the one or more items. Finally, an estimation is made of how the particular user would rate the particular item based upon ratings for the particular item given by the one or more other users.