Accés restringit als usuaris de la UB via Elsevier

Tabla de Contenidos: “…Half Title; Title Page; Copyright; Contents; List of Tables; List of Figures; About the Editors; List of Contributors; Foreword; 1 Introduction; 1.1 Defining the Area; 1.2 The Content and Organization of This Book; 1.3 The Audience for This Book; 1.4 Further Reading; 2 News Search Ranking; 2.1 The Learning-to-Rank Approach; 2.1.1 Related Works; 2.1.2 Combine Relevance and Freshness; 2.1.2.1 Training Sample Collection; 2.1.2.2 Editorial Labeling; 2.2 Joint Learning Approach from Clickthroughs; 2.2.1 Joint Relevance and Freshness Learning; 2.2.2 Temporal Features; 2.2.2.1 URL Freshness Features…”