Ranking Support Vector Machine with Kernel Approximation

Table 1

Information of used LETOR data sets. Q-D Pairs denote Query-Document Pairs. Each pair of the data sets has relevance labels in 0 (nonrelevant), 1 (possibly relevant), and 2 (relevant).

Data set	Queries	Q-D Pairs	Features	Relevance
TD2004	75	74,146	64
OHSUMED	106	16,140	45
MQ2007	1692	69,623	46