a php class based on php's libSVM,expanded many useful functions.
class EasyPhpSvm:
propertys:
- public debug: if debug mode is opening,default false.
- private cRange: an array controls autosearch rang of cost parameter in libsvm.format:array(from,to,step),default array(-7,7,2)
- private gRange: an array controls autosearch rang of gamma parameter in libsvm.format:array(from,to,step),default array(-7,7,2)
- private cMinStep: the accurate searching step of cost parameter,default 0.5
- private gMinStep: the accurate searching step of gamma parameter,default 0.5
functions:
- public setcRange(
$start,$end,$step,$minStep):set step range of cost parameter - public setgRange(
$start,$end,$step,$minStep):set step range of gamma parameter - public gridSearchCG(
$data):auto search best c,g parameter using gridSearch and cross validate,$data could be an svm light file url or an array like this array(-1,1=>0.87263,22=>9767,43=>0,44=>1)