'Key measure user happiness' diaporamas de présentation

Web search engines

653 views • 58 slides

Lecture 9: Evaluation

Lecture 9: Evaluation. Web Search and Mining. How do we know if our results are good? Evaluating a search engine Benchmarks Precision and recall Results summaries: Making our good results usable to a user. This lecture. Evaluating search engines. Measures. How fast does it index

641 views • 50 slides

Lecture 9: Evaluation

Lecture 9: Evaluation. Web Search and Mining. How do we know if our results are good? Evaluating a search engine Benchmarks Precision and recall Results summaries: Making our good results usable to a user. This lecture. Evaluating search engines. Measures. How fast does it index

506 views • 50 slides

Information Retrieval and Web Search

Information Retrieval and Web Search. Lecture 8: Evaluation. This lecture. Results summaries: Making our good results usable to a user How do we know if our results are any good? Evaluating a search engine Benchmarks Precision and recall. Results summaries. Summaries.

498 views • 49 slides

Evaluating search engines

Evaluating search engines. Sec. 8.6. Measures for a search engine. How fast does it index Number of documents/hour (Average document size) How fast does it search Latency as a function of index size Expressiveness of query language Ability to express complex information needs

160 views • 8 slides