def test04_batch_search_by_vectors(self):
index = HnswIndex(self.dim)
index.load(self.model_fname)
T = [[random.gauss(0, 1) for z in xrange(self.dim)]
for y in xrange(100)]
batch_res = index.batch_search_by_vectors(T,
10,
num_threads=12,
include_distances=True)
normal_res = [
index.search_by_vector(t, 10, include_distances=True) for t in T
]
self.assertEqual(batch_res, normal_res)
class N2(BaseANN):
def __init__(self, m, ef_construction, n_threads, ef_search, metric, batch):
self.name = "N2_M%d_efCon%d_n_thread%s_efSearch%d%s" % (m, ef_construction, n_threads, ef_search,
'_batch' if batch else '')
self._m = m
self._m0 = m * 2
self._ef_construction = ef_construction
self._n_threads = n_threads
self._ef_search = ef_search
self._index_name = os.path.join(CACHE_DIR, "index_n2_%s_M%d_efCon%d_n_thread%s"
% (args.dataset, m, ef_construction, n_threads))
self._metric = metric
def fit(self, X):
if self._metric == 'euclidean':
self._n2 = HnswIndex(X.shape[1], 'L2')
elif self._metric == 'dot':
self._n2 = HnswIndex(X.shape[1], 'dot')
else:
self._n2 = HnswIndex(X.shape[1])
if os.path.exists(self._index_name):
n2_logger.info("Loading index from file")
self._n2.load(self._index_name, use_mmap=False)
return
n2_logger.info("Create Index")
for i, x in enumerate(X):
self._n2.add_data(x)
self._n2.build(m=self._m, max_m0=self._m0, ef_construction=self._ef_construction, n_threads=self._n_threads)
self._n2.save(self._index_name)
def query(self, v, n):
return self._n2.search_by_vector(v, n, self._ef_search)
def batch_query(self, X, n):
self.b_res = self._n2.batch_search_by_vectors(X, n, self._ef_search, self._n_threads)
def get_batch_results(self):
return self.b_res
def __str__(self):
return self.name
