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authorChris Dyer <cdyer@cs.cmu.edu>2012-01-27 13:19:27 -0500
committerChris Dyer <cdyer@cs.cmu.edu>2012-01-27 13:19:27 -0500
commit3d17bf9ae1ba67cd091794839d4d5f4c393a0e2c (patch)
tree8e85fa3da0759c6df13ca306f95c026743989eba /utils
parent3c1c98b5aec7aec34432ddc37385df06d301bdd5 (diff)
migration to new metric api for vest, clean up of unsupported/not functional code
Diffstat (limited to 'utils')
-rw-r--r--utils/fast_sparse_vector.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/utils/fast_sparse_vector.h b/utils/fast_sparse_vector.h
index 1301581a..17fa47bf 100644
--- a/utils/fast_sparse_vector.h
+++ b/utils/fast_sparse_vector.h
@@ -178,6 +178,12 @@ class FastSparseVector {
T l2norm() const {
return sqrt(l2norm_sq());
}
+ T pnorm(const double p) const {
+ T sum = T();
+ for (const_iterator it = begin(), e = end(); it != e; ++it)
+ sum += pow(fabs(it->second), p);
+ return pow(sum, 1.0 / p);
+ }
// if values are binary, gives |A intersect B|/|A union B|
template<typename S>
S tanimoto_coef(const FastSparseVector<S> &vec) const {