Academic Journal
Longman Dictionary of Contemporary English
| العنوان: | Longman Dictionary of Contemporary English |
|---|---|
| المؤلفون: | Vassilis Plachouras, Iadh Ounis |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://ir.dcs.gla.ac.uk/terrier/publications/fulltext_plachouras.pdf. |
| بيانات النشر: | Longman |
| سنة النشر: | 2007 |
| المجموعة: | CiteSeerX |
| الوصف: | Document fields, such as the title or the headings of a document, offer a way to consider the structure of documents for retrieval. Most of the proposed approaches in the literature employ either a linear combination of scores assigned to different fields, or a linear combination of frequencies in the term frequency normalisation component. In the context of the Divergence From Randomness framework, we have a sound opportunity to integrate document fields in the probabilistic randomness model. This paper introduces novel probabilistic models for incorporating fields in the retrieval process using a multinomial randomness model and its information theoretic approximation. The evaluation results from experiments conducted with a standard TREC Web test collection show that the proposed models perform as well as a state-of-the-art field-based weighting model, while at the same time, they are theoretically founded and more extensible than current field-based models. 1 |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.106.5269; http://ir.dcs.gla.ac.uk/terrier/publications/fulltext_plachouras.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.106.5269 http://ir.dcs.gla.ac.uk/terrier/publications/fulltext_plachouras.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.AE6B301B |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |