Buch, Englisch, 163 Seiten, Paperback, Format (B × H): 187 mm x 235 mm
Reihe: Synthesis Lectures on Information Concepts, Retrieval, and Services
Buch, Englisch, 163 Seiten, Paperback, Format (B × H): 187 mm x 235 mm
Reihe: Synthesis Lectures on Information Concepts, Retrieval, and Services
ISBN: 978-1-62705-078-4
Verlag: MORGAN & CLAYPOOL
Regarding intuition and simplicity, though LM is clear from a probabilistic point of view, several people stated: ""It is easy to understand TF-IDF and BM25. For LM, however, we understand the math, but we do not fully understand why it works.""
This book takes a horizontal approach gathering the foundations of TF-IDF, PRF, BIR, Poisson, BM25, LM, probabilistic inference networks (PIN's), and divergence-based models. The aim is to create a consolidated and balanced view on the main models.
A particular focus of this book is on the ""relationships between models."" This includes an overview over the main frameworks (PRF, logical IR, VSM, generalized VSM) and a pairing of TF-IDF with other models. It becomes evident that TF-IDF and LM measure the same, namely the dependence (overlap) between document and query. The Poisson probability helps to establish probabilistic, non-heuristic roots for TF-IDF, and the Poisson parameter, average term frequency, is a binding link between several retrieval models and model parameters.
Autoren/Hrsg.
Weitere Infos & Material
- List of Figures
- Preface
- Acknowledgments
- Introduction
- Foundations of IR Models
- Relationships Between IR Models
- Summary & Research Outlook
- Bibliography
- Author's Biography
- Index