Abstract: A robust knowledge-based management and sharing system organized by context for expertise-based or context-based searching and retrieval of relevant information is disclosed. The various embodiments and techniques described herein are used to organize a user's data and communications around the user's expertise or one or more contexts the user is associated with such as the user's projects, products, and customers. The organization of user data is derived from the user's competencies and interactions with others and is used to build and index user profiles in a manner that facilitates retrieval in search results for relevant search criteria. A linguistic processing pipeline is used to parse and index the user's data to generate the complete and partial profiles organized by context. Complete and partial profiles are generated, indexed, ranked, and stored by the system.