Searching method using extended keyword pool and system thereof

Abstract

Provided are a search method using an extended keyword pool and a system for performing the method. The search system using the extended keyword pool may include a purchased keyword module to generate a purchased keyword set by searching for a keyword having a purchase history through a search advertisement, an additional keyword module to generate an additional keyword set by extracting a keyword from at least one source, a unified search keyword module to generate a unified search keyword set by searching for a keyword having a number of hits greater than a predetermined number for each keyword, among queries including the purchased keyword and the additional keyword, and a search module to provide an associated keyword or an extended keyword based on a search word, using the keywords included in the purchased keyword set, the additional keyword set, and the unified search keywo

Dependencies are inferred from the claim text.