[features] Functions for dealing with minibatches

src/minibatch.h

@@ -0,0 +1,26 @@
+#ifndef MINIBATCH_H
+#define MINIBATCH_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "collections.h"
+#include "features.h"
+#include "sparse_matrix.h"
+#include "trie.h"
+#include "trie_utils.h"
+#include "vector_math.h"
+
+
+bool count_features_minibatch(khash_t(str_double) *feature_counts, feature_count_array *minibatch, bool unique);
+bool count_labels_minibatch(khash_t(str_uint32) *label_counts, cstring_array *labels);
+
+trie_t *select_features_threshold(khash_t(str_double) *feature_counts, double threshold);
+khash_t(str_uint32) *select_labels_threshold(khash_t(str_uint32) *label_counts, uint32_t threshold);
+
+sparse_matrix_t *feature_matrix(trie_t *feature_ids, feature_count_array *feature_counts);
+sparse_matrix_t *feature_vector(trie_t *feature_ids, khash_t(str_double) *feature_counts);
+uint32_array *label_vector(khash_t(str_uint32) *label_ids, cstring_array *labels);
+
+
+#endif