‘‘‘Created?on?Jun06?2014
Linear?Regression?algorithm?support?ordinary?least?squares?ridge?Regression
andetc.?
@author:?Aidan
‘‘‘

from?numpy?import?*
from?object_json?import?*
from?copy?import?*
import?pdb
import?operator


class?linearRegress（object）:
????def?__init__（selfLRDict?=?None??**args）:
????????‘‘‘currently?support?OLS?ridge?LWLR???????????
????????‘‘‘
????????obj_list?=?inspect.stack（）[1][-2]
????????self.__name__?=?obj_list[0].split（‘=‘）[0].strip（）
????????if?not?LRDict:
????????????self.LRDict?=?{}
????????else:
????????????self.LRDict?=?LRDict
????????????#to?Numpy?matraix
????????????if?‘OLS‘?in?self.LRDict:
????????????????self.LRDict[‘OLS‘]?=?mat（self.LRDict[‘OLS‘]）
????????????if?‘ridge‘?in?self.LRDict:
????????????????self.LRDict[‘ridge‘][0]?=?mat（self.LRDict[‘ridge‘][0]）
????????????????self.LRDict[‘ridge‘][2]?=?mat（self.LRDict[‘ridge‘][2]）
????????????????self.LRDict[‘ridge‘][3]?=?mat（self.LRDict[‘ridge‘][3]）
????????????????self.LRDict[‘ridge‘][4]?=?mat（self.LRDict[‘ridge‘][4]）
????????
????def?jsonDumpsTransfer（self）:
????????‘‘‘essential?transformation?to?Python?basic?type?in?order?to
????????store?as?json.?dumps?as?objectname.json?if?filename?missed?‘‘‘
????????#pdb.set_trace（）
????????if?‘OLS‘?in?self.LRDict:
????????????self.LRDict[‘OLS‘]?=?self.LRDict[‘OLS‘].tolist（）
????????if?‘ridge‘?in?self.LRDict:
????????????????self.LRDict[‘ridge‘][0]?=?self.LRDict[‘ridge‘][0].tolist（）
????????????????self.LRDict[‘ridge‘][2]?=?self.LRDict[‘ridge‘][2].tolist（）
????????????????self.LRDict[‘ridge‘][3]?=?self.LRDict[‘ridge‘][3].tolist（）
????????????????self.LRDict[‘ridge‘][4]?=?self.LRDict[‘ridge‘][4].tolist（）

????def?jsonDumps（self?filename=None）:
????????‘‘‘dumps?to?json?file‘‘‘
????????self.jsonDumpsTransfer（）
????????if?not?filename:
????????????jsonfile?=?self.__name__+‘.json‘
????????else:?jsonfile?=?filename
????????objectDumps2File（self?jsonfile）
????????
????def?jsonloadTransfer（self）:??????
????????‘‘‘essential?transformation?to?object?required?type?such?as?numpy?matrix
????????call?this?function?after?newobject?=?objectLoadFromFile（jsonfile）‘‘‘
????????#pdb.set_trace（）
????????if?‘OLS‘?in?self.LRDict:
????????????self.LRDict[‘OLS‘]?=?mat（self.LRDict[‘OLS‘]）
????????if?‘ridge‘?in?self.LRDict:
????????????self.LRDict[‘ridge‘][0]?=?mat（self.LRDict[‘ridge‘][0]）
????????????self.LRDict[‘ridge‘][2]?=?mat（self.LRDict[‘ridge‘][2]）
????????????self.LRDict[‘ridge‘][3]?=?mat（self.LRDict[‘ridge‘][3]）
????????????self.LRDict[‘ridge‘][4]?=?mat（self.LRDict[‘ridge‘][4]）

????def?solver_OLS（self?xMat?yMat）:
????????x0Mat?=?mat（ones（（xMat.shape[0]1）））
????????xMat?=?hstack（（x0Mat?xMat））#extend?x0=1?for?each?sample
????????xTx?=?xMat.T*xMat
????????if?linalg.det（xTx）?==?0.0:
????????????print?“This?matrix?is?singular?cannot?do?inverse“
????????????#raise
????????else:
????????????self.LRDict[‘OLS‘]?=?xTx.I?*?（xMat.T*yMat）
????
????
????def?solver_ridg

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件?????197357??2011-01-19?17:17??linear_regression\abalone.txt

?????文件???????5600??2011-01-08?10:02??linear_regression\ex0.txt

?????文件???????5600??2011-01-18?17:18??linear_regression\ex1.txt

?????文件???????5850??2014-12-22?09:38??linear_regression\linearregress.py

?????文件???????5928??2014-12-22?09:26??linear_regression\linearregress.pyc

?????文件???????2789??2014-12-01?12:11??linear_regression\object_json.py

?????文件???????4100??2014-12-19?10:04??linear_regression\object_json.pyc

?????文件???????4833??2014-12-22?09:26??linear_regression\testlinearregress.py

?????目錄??????????0??2014-12-22?09:46??linear_regression

-----------?---------??----------?-----??----

???????????????232057????????????????????9