def vocabulary_max(self, value):
"""
Sets the maximum allowed vocabulary (bag) size. Samples with greater
number of items will be truncated. Must be positive. Invalidates all
the caches.
:param value: the new maximum size which must be positive.
:type value: int
:raises ValueError: if the value is less than vocabulary_min or <= 0.
"""
value = int(value)
if value <= 0:
raise ValueError("vocabulary_max must be > 0 (got %d)" % value)
try:
if value < self.vocabulary_min:
raise ValueError(
"vocabulary_max may not be less than vocabulary_min")
except AttributeError:
pass
self._vocabulary_max = value
if self._relax_cache is not None:
libwmdrelax.emd_relaxed_cache_fini(self._relax_cache)
self._relax_cache = libwmdrelax.emd_relaxed_cache_init(value * 2)
if self._exact_cache is not None:
libwmdrelax.emd_cache_fini(self._exact_cache)
self._exact_cache = libwmdrelax.emd_cache_init(value * 2)
self._reset_caches()
def test_with_cache(self):
cache = libwmdrelax.emd_relaxed_cache_init(4)
w1, w2, dist = self._get_w1_w2_dist()
r = libwmdrelax.emd_relaxed(w1, w2, dist, cache)
self.assertAlmostEqual(r, 0.6125112)
r = libwmdrelax.emd_relaxed(w1, w2, dist, cache=cache)
self.assertAlmostEqual(r, 0.6125112)
libwmdrelax.emd_relaxed_cache_fini(cache)
def vocabulary_max(self, value):
value = int(value)
if value <= 0:
raise ValueError("vocabulary_max must be > 0 (got %d)" % value)
self._vocabulary_max = value
if self._relax_cache is not None:
libwmdrelax.emd_relaxed_cache_fini(self._relax_cache)
self._relax_cache = libwmdrelax.emd_relaxed_cache_init(value * 2)
if self._exact_cache is not None:
libwmdrelax.emd_cache_fini(self._exact_cache)
self._exact_cache = libwmdrelax.emd_cache_init(value * 2)
self._reset_caches()
def __del__(self):
"""
Attempts to clear the native caches.
"""
try:
if self._relax_cache is not None:
libwmdrelax.emd_relaxed_cache_fini(self._relax_cache)
except AttributeError:
pass
try:
if self._exact_cache is not None:
libwmdrelax.emd_cache_fini(self._exact_cache)
except AttributeError:
pass
def __del__(self):
if self._relax_cache is not None:
libwmdrelax.emd_relaxed_cache_fini(self._relax_cache)
if self._exact_cache is not None:
libwmdrelax.emd_cache_fini(self._exact_cache)
