Information Retrieval and Recommendation

Fields concerned with finding and suggesting relevant information from large collections. It covers the search for documents and records that match a need, systems that predict which items a person will want, and the curation and preservation of collections in digital libraries. A field belongs here when the task is to locate or rank information for a user. It excludes the underlying storage engines, which belong to data management, and the web as a system, which belongs to web and semantic technologies.