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authorChris Dyer <cdyer@cs.cmu.edu>2012-10-11 14:06:32 -0400
committerChris Dyer <cdyer@cs.cmu.edu>2012-10-11 14:06:32 -0400
commit07ea7b64b6f85e5798a8068453ed9fd2b97396db (patch)
tree644496a1690d84d82a396bbc1e39160788beb2cd /utils/gamma_poisson.h
parent37b9e45e5cb29d708f7249dbe0b0fb27685282a0 (diff)
parenta36fcc5d55c1de84ae68c1091ebff2b1c32dc3b7 (diff)
Merge branch 'master' of https://github.com/redpony/cdec
Diffstat (limited to 'utils/gamma_poisson.h')
-rw-r--r--utils/gamma_poisson.h33
1 files changed, 0 insertions, 33 deletions
diff --git a/utils/gamma_poisson.h b/utils/gamma_poisson.h
deleted file mode 100644
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--- a/utils/gamma_poisson.h
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@@ -1,33 +0,0 @@
-#ifndef _GAMMA_POISSON_H_
-#define _GAMMA_POISSON_H_
-
-#include <m.h>
-
-// http://en.wikipedia.org/wiki/Conjugate_prior
-struct GammaPoisson {
- GammaPoisson(double shape, double rate) :
- a(shape), b(rate), n(), marginal() {}
-
- double prob(unsigned x) const {
- return exp(Md::log_negative_binom(x, a + marginal, 1.0 - (b + n) / (1 + b + n)));
- }
-
- void increment(unsigned x) {
- ++n;
- marginal += x;
- }
-
- void decrement(unsigned x) {
- --n;
- marginal -= x;
- }
-
- double log_likelihood() const {
- return 0;
- }
-
- double a, b;
- int n, marginal;
-};
-
-#endif