'Optimal query vector' diaporamas de présentation

Query Operations

Query Operations. Adapted from Lectures by Prabhakar Raghavan (Google) and Christopher Manning (Stanford). Evaluation of large search engines. Search engines have test collections of queries and hand-ranked results Recall is difficult to measure on the web

823 views • 71 slides

932 views • 62 slides

Information Retrieval and Web Search

Information Retrieval and Web Search. Lecture 9: Query Expansion. Recap of the last lecture. Results summaries Evaluating a search engine Benchmarks Precision and recall. This lecture. Improving results

648 views • 48 slides

K nearest neighbor and Rocchio algorithm

1.18k views • 28 slides