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Author SHA1 Message Date
Dan Kortschak
0777e22537 graph/network: add heat diffusion propagation functions 2017-11-25 06:48:06 +10:30
Vladimir Chalupecky
4572f2bc4a blas/gonum: add test for Ztrmv 2017-11-23 11:23:53 +01:00
Vladimir Chalupecky
fd9f9d520e blas/testblas: add test for Ztrmv 2017-11-23 11:23:53 +01:00
Vladimir Chalupecky
c35996315c blas/gonum: add Ztrmv 2017-11-23 11:23:53 +01:00
Dan Kortschak
95704fa00e floats: add functions for handling NaN payloads 
This handles the simple case of ignoring sign and only dealing with
quiet NaN values since signalling NaN would require that we check that
at least one of the low bits was set and fail somehow if not.

Note that Go treats all NaNs as silent.
 2017-11-20 20:20:44 +10:30
Brendan Tracey
a3eff45798 stat/combin: add Cartesian for constructing the cartesian product of … (#303) 
* stat/combin: add Cartesian for constructing the cartesian product of a set of slices
 2017-11-19 22:17:43 -07:00
Dan Kortschak
790b7356e7 all: migrate to golang.org/x/exp/rand 2017-11-20 15:20:25 +10:30
Vladimír Chalupecký
82b508537e mat: fix docs and error check in Cholesky.ExtendVecSym 2017-11-18 23:24:30 +01:00
Josh Wilson
2ebcb78464 A+C: add Josh Wilson 2017-11-17 16:58:03 +10:30
Josh Wilson
ffa26cba53 mathext: speed up Digamma for large negative arguments 
Before the Digamma function could be quite slow for large negative
arguments because it had to do use the recurrence relation thousands
of times. This avoids that by instead using the reflection formula. It
also adds some explicit checks for special cases (Inf, NaN, poles).
 2017-11-17 16:58:03 +10:30
kortschak
54a5f6f081 all: fix build and make tests pass with new streams 2017-11-17 12:38:53 +10:30
kortschak
fa0c5aa7bc all: use golang.org/x/exp/rand instead of math/rand 2017-11-17 11:52:34 +10:30
Brendan Tracey
23014c0119 mat: add ability to compute the Cholesky when adding a row and column… (#298) 
* mat: add ability to compute the Cholesky when adding a row and column to the factorized matrix
 2017-11-16 17:11:32 -07:00
kortschak
81f1289e48 all: run Go tip gofmt -s 2017-11-16 17:54:36 +10:30
Francesc Campoy
718272fdee add Francesc Campoy and source{d} to A+C 2017-11-15 07:34:29 +10:30
kortschak
805531d142 all: change capitalization of gonum in license header 2017-11-02 06:54:08 +10:30
Brendan Tracey
637e7b76b9 stat/samplemv: give tests fixed random seeds (#290) 2017-10-27 00:27:34 -06:00
kortschak
21d5891471 all: remove go1.7 build constraints 2017-10-27 13:48:47 +10:30
kortschak
8c60ecd94c stat/sampleuv: add missing return 2017-10-26 17:13:47 +10:30
kortschak
a14e45c7ad mat: tidy up example formatting 2017-10-26 14:26:56 +10:30
Jeremy Atkinson
e01b7a02ec added examples for mul/exp/pow/scale 2017-10-26 12:32:29 +10:30
Brendan Tracey
5668e4c11f stat/samplemv: add Halton sampling procedure (#264) 
* stat/samplemv: add Halton sampling procedure
 2017-10-25 17:02:30 -06:00
Brendan Tracey
0e1d863d72 stat/distmv: add function for directly computing normal log probability (#281) 
* stat/distmv: add function for directly computing normal log probability
 2017-10-24 22:47:13 -06:00
Jeremy Atkinson
fa851461dd mat: added a few godoc examples for Dense methods (#263) 
* added a few godoc examples for Dense methods
 2017-10-24 09:22:15 -06:00
kortschak
49a081d427 mat: don't confuse notions of zero 
Replacement of isZero method calls elsewhere is done to avoid conflating
the zero concept with what we are actually asking: "Do we need to make a
matrix here?"
 2017-10-24 16:30:21 +10:30
Vladimir Chalupecky
c1c4dfa26b blas/gonum: add implementation comments to Zhemv 2017-10-23 11:21:29 +02:00
Vladimir Chalupecky
5e1fba744e gonum/blas/testblas: add test for Zhemv 2017-10-23 11:21:29 +02:00
Vladimir Chalupecky
b74acdfcd6 blas/gonum: add Zhemv 2017-10-23 11:21:29 +02:00
Brendan Tracey
ce73cefcda stat/distmv: remove use of lower and add method for directly generati… (#274) 
* stat/distmv: remove use of lower and add method for directly generating a random number
 2017-10-19 23:02:07 -06:00
Brendan Tracey
3c877c5eba mat: Add RawU method to the Cholesky decomposition to directly expose… (#273) 
* mat: Add RawU method to the Cholesky decomposition to directly expose the storage matrix

This is returned as Triangular rather than TriDense for two reasons
1) In the future, we may be able to optimize Cholesky, for instance by storing the decomposition as a banded matrix if the factorized matrix was banded. Returning as Triangular allows this to be robust to future modifications of Cholesky.
2) Normally one wants to return concrete types to allow maximum flexibility is using them, for example avoiding interface assertions. However, the opposite is true here. The user should not modify the returned data, and by returning a Triangular rather than a TriDense, this forces tricky code in order to be able to modify the returned matrix.

Fixes #270.
 2017-10-19 20:50:26 -06:00
Brendan Tracey
ac9ad9e533 mat: Add Scale method for TriDense and Cholesky (#267) 
* mat: Add Scale method for TriDense and Cholesky
 2017-10-19 07:24:29 -06:00
Brendan Tracey
38fbc22caf optimize: Update documentation for Global and clean up usage of globa… (#265) 
* optimize: Update documentation for Global and clean up usage of globalStatus
 2017-10-17 09:15:41 -06:00
Daniel Fireman
aff0e10c44 stat: unexport Panics testing helper 
A+C: add Daniel Fireman
 2017-10-10 14:04:33 +10:30
Brendan Tracey
fa42c6938b mat: change cholesky.To to cholesky.ToSym (#250) 
* mat: change cholesky.To to cholesky.ToSym

Fixes #133
 2017-10-02 15:35:10 -06:00
Chad Kunde
18ecaeca93 Merge pull request #251 from sglyon/patch-1 
DOC: fix typo in documentation for `Row` method
 2017-10-02 14:22:09 -07:00
Spencer Lyon
b596c0f140 A+C: add Spencer Lyon 2017-10-02 12:31:20 -04:00
Spencer Lyon
020a1c5f72 mat: fix Row doc comment 2017-10-02 12:30:54 -04:00
Brendan Tracey
3a687b33d4 stat: Improve documentation and test for Moment (#248) 2017-09-29 22:27:21 -06:00
Brendan Tracey
1f58387cb6 stat: add BivariateMoment (#244) 
* stat: add MixedMoment and fix bug in Moment code

* Revert unrelated changes, rename to BivariateMoment

* last fix
 2017-09-29 07:03:31 -06:00
Robin Eklind
f786e6cd3c graph/encoding/dot: store graph DOT ID if present (#237) 
Add round trip test case for graph DOT ID.
 2017-09-28 10:02:53 +02:00
Ekaterina Efimova
d822215c3b A+C: add Ekaterina Efimova 2017-09-27 21:36:47 +09:30
Davor Kapsa
73bf631143 A+C: add Davor Kapsa 2017-09-27 15:33:13 +09:30
kortschak
db6d01ed81 graph/topo: rename VertexOrdering => DegeneracyOrdering 2017-09-20 07:32:35 +09:30
kortschak
f818f8f7a9 graph/path: allow Shortest to traverse negative cycles 
Also add checks for cases where negative cycles exist but are not marked
to protect against future shortest path function additions.
 2017-09-15 08:17:25 +09:30
Vladimir Chalupecky
dbb8f4774d blas/gonum: add test for Zgemv 2017-09-15 00:37:03 +02:00
Vladimir Chalupecky
6c3eea8080 blas/gonum: add Zgemv 2017-09-15 00:37:03 +02:00
Vladimir Chalupecky
1025cfed57 blas/gonum: clean up Dgemv comment 2017-09-15 00:37:03 +02:00
kortschak
e6a5ea56fd graph/topo: use degeneracyOrdering instead of VertexOrdering for BronKerbosch 2017-09-15 07:05:29 +09:30
kortschak
c86b60857a graph/topo: fix error reporting for VertexOrdering test 2017-09-15 07:05:29 +09:30
kortschak
8b33e669be graph/topo: add function to find k-core of undirected graph 2017-09-15 07:05:29 +09:30