faster cocoa update

gingsmith · gingsmith · commit 978b19375294 · 2015-06-30T14:45:57.000-07:00
diff --git a/src/main/scala/solvers/CoCoA.scala b/src/main/scala/solvers/CoCoA.scala
@@ -180,7 +180,7 @@ object CoCoA {
         // update primal and dual variables
         val update = x * (y * (newAlpha - alpha(idx)) / (lambda * n))
         if (!plus) {
-          w = w + update
+          w += update
         }
         deltaW += update
         alpha(idx) = newAlpha

Original file line number	Diff line number	Diff line change
`@@ -180,7 +180,7 @@ object CoCoA {`
`180`	`180`	`// update primal and dual variables`
`181`	`181`	`val update = x * (y * (newAlpha - alpha(idx)) / (lambda * n))`
`182`	`182`	`if (!plus) {`
`183`		`- w = w + update`
	`183`	`+ w += update`
`184`	`184`	`}`
`185`	`185`	`deltaW += update`
`186`	`186`	`alpha(idx) = newAlpha`