- 1. Introduction
- 2. Web Information Retrieval
- 2.1. Overview of IR-Models
- 2.2. Web Searching
- 3. Search Engines
- 3.1. Challenges
- 3.2. Search Engine Architecture
- 3.3. Ranking Techniques
- 3.4. Trends
- 3.5. Revenue Sources
- 4. The Information Market
- 4.1. The Information Economy
- 4.2. Transaction Costs
- 4.3. Economics of Attention
- 4.4. Mass Media
- 4.5. Diversity of Opinions
- 5. Search Engines from an Agency Theory Perspective
- 5.1. The Basic Concept of Agenca Theory
- 5.2. The Optimal Delegation of Power
- 5.3. Power Roles
- 5.4. Design Patterns
- 5.5. Design Strategies
- 5.6. Choice Strategy
- 6. Conclusions
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