From 5cb5512384e7f847391f9827c171fd8f1bbcd1a3 Mon Sep 17 00:00:00 2001
From: Michel Vincent <vm.michel@gmail.com>
Date: Wed, 28 Apr 2010 06:51:53 +0000
Subject: [PATCH] Add coef_ to SVR.
git-svn-id: https://scikit-learn.svn.sourceforge.net/svnroot/scikit-learn/trunk@708 22fbfee3-77ab-4535-9bad-27d1bd3bc7d8
---
scikits/learn/svm.py | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/scikits/learn/svm.py b/scikits/learn/svm.py
index 606c327355..acb19a9c75 100644
--- a/scikits/learn/svm.py
+++ b/scikits/learn/svm.py
@@ -235,6 +235,20 @@ class SVR(BaseLibsvm):
cache_size, eps, C, nr_weight, nu, p,
shrinking, probability)
+ @property
+ def coef_(self):
+ if _kernel_types[self.kernel] != 'linear':
+ raise NotImplementedError(
+ 'coef_ is only available when using a linear kernel')
+ if self.support_.size == 0:
+ raise Exception, 'No support vector'
+
+ coef_ = []
+ for i in range(self.dual_coef_.shape[0]):
+ coef_.append(np.dot(self.dual_coef_[i], self.support_))
+ coef_ = np.array(coef_)
+ return coef_
+
class OneClassSVM(BaseLibsvm):
"""
Outlayer detection
--
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