1038 commits

This branch

This branch

All branches

Author	SHA1	Message	Date
Alan Saul	9364efc755	Started adding gaussian sanity checker	2013-07-30 16:11:03 +01:00
Alan Saul	fdb7b99e0b	Got rid of some overdoing the approximation	2013-07-29 17:21:52 +01:00
Alan Saul	aa98608590	Started adding gaussian likelihood, changed round preloading old_a	2013-07-29 15:29:46 +01:00
Alan Saul	57001851c4	Trying to debug kernel parameters learning (fails even when noise fixed) ... may be some instablility, seems like it can get it if it starts close	2013-07-09 20:05:03 +01:00
Alan Saul	ee980227ac	Fixed 2*variance plotting instead of 2*std plotting, tidied up	2013-07-09 11:35:42 +01:00
Alan Saul	2a366619b3	Changed incorrect naming	2013-07-08 16:09:20 +01:00
Alan Saul	4e5cefb4b5	Reparameratised in terms of sigma2	2013-07-08 15:48:53 +01:00
Alan Saul	ab6a3a571e	Playing trying to find what makes it want to go so low	2013-07-02 11:14:48 +01:00
Alan Saul	a7169ab1ab	Fixed bug where B wasn't refering to current f location	2013-07-01 15:21:47 +01:00
Alan Saul	26b3855af5	Everything seems to be gradchecking again	2013-07-01 10:06:20 +01:00
Alan Saul	c90b1f0c99	Added minimizer for finding f, doesn't help	2013-06-27 15:04:57 +01:00
Alan Saul	617d73ca32	Now checkgrads a lot more of the time, but still fails in optimisation, seems also odd that when parameter is fixed kernel parameters go to infinity	2013-06-26 15:44:26 +01:00
Alan Saul	064efd5535	Added another optimisation which doesn't use gradients. Seems like F is almost always found, but Y can be off, suggesting that Wi__Ki_W is wrong, maybe W?	2013-06-25 18:20:00 +01:00
Alan Saul	e80fad197c	trying to fix optimisation problem, fixed a few bugs but still fails at very low noise	2013-06-24 15:39:38 +01:00
Alan Saul	d4bfd99c21	Starting to fiddle with mode finding code	2013-06-20 14:30:25 +01:00
Alan Saul	e900509a7c	Fixed a sign wrong, now gradchecks weirdly only above certain points	2013-06-19 16:13:11 +01:00
Alan Saul	de689fa8e9	Now gradchecks everytime but student_t fit is bad, noise is underestimated by a long way	2013-06-19 12:00:00 +01:00
Alan Saul	ac461e1b2a	Checkgrads with explicit and implicit components half the time	2013-06-18 17:55:58 +01:00
Alan Saul	f3b8dfb222	about to input new derivations for Z's...	2013-06-03 14:51:09 +01:00
Alan Saul	6c29750795	Took out all the asserts and using pure broadcasting method of diagonal now	2013-05-31 16:59:54 +01:00
Alan Saul	e842f6e687	Made it use the fact that W is diagonal and put assertions in to ensure that the results are the same	2013-05-31 16:45:22 +01:00
Alan Saul	f9857e08c0	Broken it by getting rid of squeeze, but now working on making it faster using proper vector multiplciation for diagonals	2013-05-31 11:55:32 +01:00
Alan Saul	20227fb2ac	Made more numerically stable in a hope that it will work and I will find a bug...	2013-05-30 16:17:37 +01:00
Alan Saul	23ed2a2d15	Lots of name changing and went through all likelihood gradients again	2013-05-29 17:33:06 +01:00
Alan Saul	117c377d13	Ripped out all things Laplace parameter estimation, starting again with new tactic	2013-05-29 14:02:03 +01:00
Alan Saul	d63d370641	About to rip out old chain rule method of learning gradients	2013-05-29 13:46:55 +01:00
Alan Saul	146d7e2458	Trying to fix dL_dytil gradient	2013-05-17 17:42:00 +01:00
Alan Saul	48d693791e	changed name	2013-05-16 12:22:37 +01:00
Alan Saul	e5d7ee9728	FIXED DYTIL_DFHAT	2013-05-16 12:06:09 +01:00
Alan Saul	21ae81de29	Workong on doing explicit gradients	2013-05-16 12:00:15 +01:00
Alan Saul	569311b510	Gradients almost there for dytil_dfhat, diagonal terms are right	2013-05-15 19:25:55 +01:00
Alan Saul	cad2c271eb	merged with devel	2013-05-14 16:26:57 +01:00
Alan Saul	787a038401	Still getting closer to grads for likelihood	2013-05-14 16:23:18 +01:00
Ricardo	47a7df9756	Merge branch 'devel' of github.com:SheffieldML/GPy into devel	2013-05-14 15:38:08 +01:00
Ricardo	3626154c02	remove profile	2013-05-14 15:38:00 +01:00
James Hensman	4bbf31eb1d	removed RA's profile deco	2013-05-14 11:26:16 +01:00
James Hensman	350fa39685	generalised backsub_both_sides	2013-05-14 11:20:44 +01:00
Ricardo	225c35d55d	Merge branch 'devel' of github.com:SheffieldML/GPy into devel	2013-05-13 19:41:10 +01:00
Ricardo	a1036fb2a5	DSYR is being used now	2013-05-13 19:40:51 +01:00
Ricardo	cb4c363c11	Gradients are working now	2013-05-13 19:38:11 +01:00
Alan Saul	5472c5c6ba	Almost have likelihood gradients working but kernels still way off	2013-05-13 18:36:02 +01:00
James Hensman	c859687d43	Merge branch 'devel' of github.com:SheffieldML/GPy into devel	2013-05-13 17:23:54 +01:00
James Hensman	542759353b	minor changes to the symmetrify function	2013-05-13 17:23:49 +01:00
Nicolo Fusi	ccde6c421f	Merge branch 'devel' of github.com:SheffieldML/GPy into devel	2013-05-13 17:21:45 +01:00
Nicolo Fusi	80c25c9aaf	moved linalg function to GPy.linalg	2013-05-13 17:04:59 +01:00
Ricardo	3cc9547cab	Merge branch 'devel' of github.com:SheffieldML/GPy into devel	2013-05-13 15:09:43 +01:00
Ricardo	b84f70b205	gradietns check :)	2013-05-13 15:09:20 +01:00
James Hensman	9c701f6e5b	added DSYR for ricardo	2013-05-13 12:54:55 +01:00
Ricardo	fda9cae3c3	Merge branch 'devel' of github.com:SheffieldML/GPy into devel	2013-05-13 11:11:29 +01:00
Ricardo	68f493b86c	New functions for EP-matching moments	2013-05-13 11:10:27 +01:00