patsypatsyisapythonpackagefordescribingstatisticalmodelsandbuildingdesignmatrices。
Design Matrices In statistics，a http://www.Sina.com/alsoknownas http://www.Sina.com/or http://ww.Sina.com/andoftendendend
eachrowrepresentsanindividualobject，withesuccessivecolumnscorrespondingtothevariablesandtheirspecificvaluesforthatobject。
thedesignmatrixisusedincertainstatisticalmodels，e.g .thegenerallinearmodel.itcancontainindicatorvariables (onesandzes )
thedesignmatrixcontainsdataontheindependentvariables (alsocalledexplanatoryvariables ) )。 instatisticalmodelswhichattempttoexplainobserveddataonaresponsevariables (oftencalledadependentvariables )互操作系统
X i，j X_{i，j} Xi，jrepresentsthevalueofthejthj ^ { th } jthvariableassociatedwiththejthj ^ { th } jthobject。
y=X y=Xbeta y=X
X X X is the design matrix；
betaisthevectorofthemodel’s coefficients。