Chapter 11

Capturing Long-Term User Interests in Online Television News Programs

Frank Hopfgartner

University of California

Contents

11.1 Introduction

11.2 Long-Term Personalization Scenario

11.3 Requirements for a User Profile

11.3.1 Capturing and Segmenting News Broadcasts

11.3.2 Exploiting External Knowledge

11.3.3 Categorizing News Stories

11.4 Tackling User Profiling Problems

11.4.1 User Profile Model

11.4.2 Capturing Evolving Interest

11.4.2.1 Constant Weighting

11.4.2.2 Exponential Weighting

11.4.2.3 Linear Weighting

11.4.2.4 Inverse Exponential ...

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