It is bag of words method to recognize objects, it includes a lot of examples

bag_words_demo\common\clear_model.m
..............\......\compute_descriptors.ln
..............\......\discrete_sampler.m
..............\......\dist_transform.m
..............\......\dist_transform_1d.m
..............\......\do_all.m
..............\......\do_form_codebook.m
..............\......\do_interest_operator.m
..............\......\do_manual_train_parts_structure.m
..............\......\do_naive_bayes.m
..............\......\do_naive_bayes_evaluation.m
..............\......\do_part_filtering.m
..............\......\do_plsa.m
..............\......\do_plsa_evaluation.m
..............\......\do_preprocessing.m
..............\......\do_random_indices.m
..............\......\do_representation.m
..............\......\do_test_efficient.m
..............\......\do_test_parts_structure.m
..............\......\do_vq.m
..............\......\drawcircle.m
..............\......\draw_ellipse.m
..............\......\Edge_Sampling.m
..............\......\genFileNames.m
..............\......\get_new_model_name.m
..............\......\gg_lola_km_binary.m
..............\......\localmax.m
..............\......\Norm_Corr.m
..............\......\pLSA_EM.m
..............\......\prefZeros.m
..............\......\recall_precision_curve.m
..............\......\roc.m
..............\......\SIFT.m
..............\......\test_localization.m
..............\......\vgg_argparse.m
..............\......\vgg_kmeans.m
..............\......\vgg_kmiter.cxx
..............\......\vgg_kmiter.mexglx
..............\......\vgg_nearest_neighbour.cxx
..............\......\vgg_nearest_neighbour.m
..............\......\vgg_nearest_neighbour.mexglx
..............\......\vgg_save_image.m
..............\......\vgg_save_image_mit.m
..............\......\vgg_save_image_pgm.m
..............\......\vgg_save_image_ppm.m
..............\......\vgg_xcv_segment.m
..............\......\xcv_segment
..............\......\xcv_segment.exe
..............\experiments\bag_of_words\config_file_1.m
..............\...........\............\config_file_2.m
..............\...........\bag_of_words
..............\common
..............\experiments
bag_words_demo

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