jinhui yuan sbnegn50mailstsinghuaeducn dear colleagues phd student tsinghua university beijing china research topic relates applying graphical models solve computer vision problems many cases need inferring map label configuration graphical model cycles therefore turn approximate algorithms however seems existing many choices many different approximate algorithms proposed question whether exists evaluation showing pros cons approach anyone point link papers work thanks much regards jinhui sbnegn50mailstsinghuaeducn fri 08 aug 2008 163154 0800 uai approximate algorithm best inferring map solution loopy graphical model