SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
Ranking function performance reached a plateau in 1994. The reason for this is investigated. First the performance of BM25 is measured as the proportion of queries satisfied on th...
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
A key challenge in recommender system research is how to effectively profile new users, a problem generally known as cold-start recommendation. Recently the idea of progressivel...
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
This work explores the problem of cross-lingual pairwise similarity, where the task is to extract similar pairs of documents across two different languages. Solutions to this pro...
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
Many network-based ranking approaches have been proposed to rank objects according to different criteria, including relevance, prestige and diversity. However, existing approache...
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
Inverted indexes are the most fundamental and widely used data structures in information retrieval. For each unique word occurring in a document collection, the inverted index sto...
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
Search engine switching is the voluntary transition between Web search engines. Engine switching can occur for a number of reasons, including user dissatisfaction with search resu...
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
We reveal that the Okapi BM25 retrieval function tends to overly penalize very long documents. To address this problem, we present a simple yet effective extension of BM25, namel...
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
SIGIR
2011
ACM
13 years 1 months ago
2011
ACM
Methods for fusing document lists that were retrieved in response to a query often use retrieval scores (or ranks) of documents in the lists. We present a novel probabilistic fusi...