Changeset 1159 for trunk/doc/Statistics.doxygen
 Timestamp:
 Feb 26, 2008, 4:12:30 PM (15 years ago)
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trunk/doc/Statistics.doxygen
r1154 r1159 308 308 309 309  It is symmetric, \f$ d(x,y) = d(y,x) \f$, that is distance from \f$ 310 x \f$ to \f$ y \f$ equals the distance from \f$ y \f$ to \f$ y\f$.310 x \f$ to \f$ y \f$ equals the distance from \f$ y \f$ to \f$ x \f$. 311 311  Zero selfdistance: \f$ d(x,x) = 0 \f$ 312 312  Triangle inequality: \f$ d(x,z) \le d(x,y) + d(y,z) \f$ … … 345 345 \f$<x,y>\f$ is the linear kernel (usual scalar product). For the weighted 346 346 case we define the linear kernel to be 347 \f$<x,y>=\frac{\sum {w_xw_yxy}}{\sum{w_xw_y} \f$ and the347 \f$<x,y>=\frac{\sum {w_xw_yxy}}{\sum{w_xw_y}}\f$ and the 348 348 polynomial kernel can be calculated as before 349 349 \f$(1+<x,y>)^N\f$.
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