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changeset 1342:4ac393ec2eb7

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Fixed comments in leapfrog method
author gdesjardins
date Fri, 22 Oct 2010 11:11:51 -0400
parents fbe4a6383441
children cf0fc12a50f7
files pylearn/sampling/hmc.py
diffstat 1 files changed, 3 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/pylearn/sampling/hmc.py	Fri Oct 22 10:58:57 2010 -0400
+++ b/pylearn/sampling/hmc.py	Fri Oct 22 11:11:51 2010 -0400
@@ -95,8 +95,8 @@
         pos: theano matrix
             in leapfrog update equations, represents pos(t), position at time t
         vel: theano matrix
-            in leapfrog update equations, represents vel(t + stepsize/2), 
-            velocity at time (t + stepsize/2)
+            in leapfrog update equations, represents vel(t - stepsize/2), 
+            velocity at time (t - stepsize/2)
         step: theano scalar
             scalar value controlling amount by which to move
         
@@ -104,7 +104,7 @@
         -------
         rval1: [theano matrix, theano matrix]
             Symbolic theano matrices for new position pos(t + stepsize), and velocity
-            vel(t+3*stepsize/2)
+            vel(t + stepsize/2)
         rval2: dictionary
             Dictionary of updates for the Scan Op
         """