Image Retrieval Based on a Multi-Integration Features Model

Table 2

The bias parameter in calculating the sigmoid function sigmoid (.).

Dataset	Performance (%)	The bias parameter
		0.0	1.0	2.0	3.0	4.0
Corel-10K	Precision	48.92	52.96	51.82	51.33	50.58
	Recall	5.87	6.36	6.22	6.16	6.07
GHIM-10K	Precision	55.4	56.48	56.65	55.83	54.89
	Recall	1.33	1.36	1.37	1.34	1.32