Abstract: A product categorization system receives a merchant system product feed, product sales data, and product search data from a merchant system and a search system. The product categorization system generates product category tags for each product listing of the merchant system product feed based on merchant system product feed data. The product categorization system assigns product listings to product categories based on the tags associated with each product listing and organizes the product listings within the product categories based on sales data and search data to create product category pages for a merchant system website. The product categorization system generates website data comprising the one or more category pages comprising the organized product listings and transmits the website data to the merchant system for display on the merchant system website. The website displays the product category pages comprising organized product listings as generated by the product categorization system.

Abstract: A computer-implemented method for accessing content items in a content store are described. In one embodiment, the computer-implemented method includes maintaining a text index of content items in a content store to enable a keyword search on the content items, receiving a query having a keyword and generating a hit list from the text index using the keyword, and extracting frequent phrases from text within content items of the hit list. The computer-implemented method also includes assigning a relative relevance to the frequent phrases and grouping content items into topics based on presence of relevant phrases within the content items of the hit list. The hit list includes one or more content items of the content store. The frequent phrases having a relatively high relevance are relevant phrases.

Abstract: A computer-implemented method for accessing content items in a content store are described. In one embodiment, the computer-implemented method includes maintaining a text index of content items in a content store to enable a keyword search on the content items, receiving a query having a keyword and generating a hit list from the text index using the keyword, and extracting frequent phrases from text within content items of the hit list. The computer-implemented method also includes assigning a relative relevance to the frequent phrases and grouping content items into topics based on presence of relevant phrases within the content items of the hit list. The hit list includes one or more content items of the content store. The frequent phrases having a relatively high relevance are relevant phrases.