Karen Spärck Jones

1935 – 2007

pioneering British computer and information scientist responsible for the concept of inverse document frequency (IDF), a technology that underlies most modern search engines

• Synonymy and semantic classification
• Report on the need for and provision of an ideal information retrieval test collection
• Automatic keyword classification for information retrieval
• Automatic Natural Language Parsing
• Charting a New Course: Natural Language Processing and Information Retrieval
• Computer Systems
• Evaluating natural language processing systems
• Information Retrieval Experiment
• Leaders in Computing
• Linguistics and information science
• Readings in information retrieval
• Readings in natural language processing