#define WF_TEXTURE_BLOCK_ONLY 10
#define WF_COLOR_BLOCK_ONLY 9
#define WF_BLOCK_ONLY 8
#define WF_TEXTURE_HISTOGRAM 7
#define WF_COLOR_HISTOGRAM 6
#define WF_COORDINATION_LEVEL 5
#define WF_BEST_PROBABILISTIC 4
#define WF_BEST_FULLY_WEIGHTED 3
#define WF_STANDARD_TF 2
#define WF_BINARY_TERM 1
#define WF_CLASSIC_IDF 0
