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author | Chris Dyer <cdyer@cs.cmu.edu> | 2012-10-11 14:06:32 -0400 |
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committer | Chris Dyer <cdyer@cs.cmu.edu> | 2012-10-11 14:06:32 -0400 |
commit | 9339c80d465545aec5a6dccfef7c83ca715bf11f (patch) | |
tree | 64c56d558331edad1db3832018c80e799551c39a /utils/crp_test.cc | |
parent | 438dac41810b7c69fa10203ac5130d20efa2da9f (diff) | |
parent | afd7da3b2338661657ad0c4e9eec681e014d37bf (diff) |
Merge branch 'master' of https://github.com/redpony/cdec
Diffstat (limited to 'utils/crp_test.cc')
-rw-r--r-- | utils/crp_test.cc | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/utils/crp_test.cc b/utils/crp_test.cc deleted file mode 100644 index 0cdb7afd..00000000 --- a/utils/crp_test.cc +++ /dev/null @@ -1,91 +0,0 @@ -#include <iostream> -#include <vector> -#include <string> - -#define BOOST_TEST_MODULE CrpTest -#include <boost/test/unit_test.hpp> -#include <boost/test/floating_point_comparison.hpp> - -#include "ccrp.h" -#include "sampler.h" - -using namespace std; - -MT19937 rng; - -BOOST_AUTO_TEST_CASE(Dist) { - CCRP<string> crp(0.1, 5); - double un = 0.25; - int tt = 0; - tt += crp.increment("hi", un, &rng); - tt += crp.increment("foo", un, &rng); - tt += crp.increment("bar", un, &rng); - tt += crp.increment("bar", un, &rng); - tt += crp.increment("bar", un, &rng); - tt += crp.increment("bar", un, &rng); - tt += crp.increment("bar", un, &rng); - tt += crp.increment("bar", un, &rng); - tt += crp.increment("bar", un, &rng); - cout << "tt=" << tt << endl; - cout << crp << endl; - cout << " P(bar)=" << crp.prob("bar", un) << endl; - cout << " P(hi)=" << crp.prob("hi", un) << endl; - cout << " P(baz)=" << crp.prob("baz", un) << endl; - cout << " P(foo)=" << crp.prob("foo", un) << endl; - double x = crp.prob("bar", un) + crp.prob("hi", un) + crp.prob("baz", un) + crp.prob("foo", un); - cout << " tot=" << x << endl; - BOOST_CHECK_CLOSE(1.0, x, 1e-6); - tt += crp.decrement("hi", &rng); - tt += crp.decrement("bar", &rng); - cout << crp << endl; - tt += crp.decrement("bar", &rng); - cout << crp << endl; - cout << "tt=" << tt << endl; -} - -BOOST_AUTO_TEST_CASE(Exchangability) { - double tot = 0; - double xt = 0; - CCRP<int> crp(0.5, 1.0); - int cust = 10; - vector<int> hist(cust + 1, 0); - for (int i = 0; i < cust; ++i) { crp.increment(1, 1.0, &rng); } - const int samples = 100000; - const bool simulate = true; - for (int k = 0; k < samples; ++k) { - if (!simulate) { - crp.clear(); - for (int i = 0; i < cust; ++i) { crp.increment(1, 1.0, &rng); } - } else { - int da = rng.next() * cust; - bool a = rng.next() < 0.5; - if (a) { - for (int i = 0; i < da; ++i) { crp.increment(1, 1.0, &rng); } - for (int i = 0; i < da; ++i) { crp.decrement(1, &rng); } - xt += 1.0; - } else { - for (int i = 0; i < da; ++i) { crp.decrement(1, &rng); } - for (int i = 0; i < da; ++i) { crp.increment(1, 1.0, &rng); } - } - } - int c = crp.num_tables(1); - ++hist[c]; - tot += c; - } - BOOST_CHECK_EQUAL(cust, crp.num_customers()); - cerr << "P(a) = " << (xt / samples) << endl; - cerr << "E[num tables] = " << (tot / samples) << endl; - double error = fabs((tot / samples) - 5.4); - cerr << " error = " << error << endl; - BOOST_CHECK_MESSAGE(error < 0.1, "error is too big = " << error); // it's possible for this to fail, but - // very, very unlikely - for (int i = 1; i <= cust; ++i) - cerr << i << ' ' << (hist[i]) << endl; -} - -BOOST_AUTO_TEST_CASE(LP) { - CCRP<string> crp(1,1,1,1,0.1,50.0); - crp.increment("foo", 1.0, &rng); - cerr << crp.log_crp_prob() << endl; -} - |