From 9b3306332a27f23a36e96a93b5ff97caee1b6e3c Mon Sep 17 00:00:00 2001 From: Chris Dyer Date: Sun, 25 Nov 2012 00:28:07 -0500 Subject: optionally optimize diagonal tension --- word-aligner/da.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'word-aligner/da.h') diff --git a/word-aligner/da.h b/word-aligner/da.h index 5e6dfa92..c979b641 100644 --- a/word-aligner/da.h +++ b/word-aligner/da.h @@ -17,7 +17,7 @@ struct DiagonalAlignment { assert(m >= i); assert(n >= j); #endif - return exp(feat(i, j, m, n) * alpha); + return exp(Feature(i, j, m, n) * alpha); } static double ComputeZ(const unsigned i, const unsigned m, const unsigned n, const double alpha) { @@ -51,21 +51,21 @@ struct DiagonalAlignment { double pct = 0; double pcb = 0; if (num_top) { - pct = arithmetico_geometric_series(feat(i, ceil, m, n), UnnormalizedProb(i, ceil, m, n, alpha), ratio, d, num_top); + pct = arithmetico_geometric_series(Feature(i, ceil, m, n), UnnormalizedProb(i, ceil, m, n, alpha), ratio, d, num_top); //cerr << "PCT = " << pct << endl; } if (floor) { - pcb = arithmetico_geometric_series(feat(i, floor, m, n), UnnormalizedProb(i, floor, m, n, alpha), ratio, d, floor); + pcb = arithmetico_geometric_series(Feature(i, floor, m, n), UnnormalizedProb(i, floor, m, n, alpha), ratio, d, floor); //cerr << "PCB = " << pcb << endl; } return (pct + pcb) / z; } - private: - inline static double feat(const unsigned i, const unsigned j, const unsigned m, const unsigned n) { + inline static double Feature(const unsigned i, const unsigned j, const unsigned m, const unsigned n) { return -fabs(double(j) / n - double(i) / m); } + private: inline static double arithmetico_geometric_series(const double a_1, const double g_1, const double r, const double d, const unsigned n) { const double g_np1 = g_1 * pow(r, n); const double a_n = d * (n - 1) + a_1; -- cgit v1.2.3