Recent technological progress in computer science, Web technologies, and the constantly evolving information available on the Internet has drastically changed the landscape of search and access to information. Current search engines employ advanced techniques involving machine learning, social networks, and semantic analysis. Next Generation Search Engines: Advanced Models for Information Retrieval is intended for scientists and decision-makers who wish to gain working knowledge about search in order to evaluate available solutions and to dialogue with software and data providers. The book aims to provide readers with a better idea of the new trends in applied research.

This book constitutes the refereed proceedings of the 15th International Conference on Discovery Science, DS 2012, held in Lyon, France, in October 2012. The 22 papers presented in this volume were carefully reviewed and selected from 46 submissions. The field of discovery science aims at inducing and validating new scientific hypotheses from data. The scope of this conference includes the development and analysis of methods for automatic scientific knowledge discovery, machine learning, intelligent data analysis, theory of learning, tools for supporting the human process of discovery in science, as well as their application to knowledge discovery.

This volume constitutes the proceedings of the 7th European Knowledge Acquisition Workshop (EKAW 93), held in Toulouse and Caylus, France, in September 1993. Traditionally the EKAW workshops deal with the various aspects of knowledge acquisition as a crucial topic in artificial intelligence as well as in computer science, engineering in general, and cognitive science. EKAW 93 had ist emphasis on knowledge acquisition for knowledge-based systems; besides the scientific workshop on the inter- disciplinary topic of knowledge acquisition there also was offered an open day as a users' forum open to the public. This proceedings contains the best papers presented at the scientific workshop after they had been selected by an international program committee consisting of leading experts in the field. The volume includes two surveys by Guy Boy and Brian Gaines and is divided in two main parts: the first part on problem solving models has sections on building steps, support tools, and comparison of approaches; the second part on life cycle and methodologies is divided in sections on refinement, methodologies, workbenches, and elicitation techniques.