def train(args, run_opts): """ The main function for training. Args: args: a Namespace object with the required parameters obtained from the function process_args() run_opts: RunOpts object obtained from the process_args() """ arg_string = pprint.pformat(vars(args)) logger.info("Arguments for the experiment\n{0}".format(arg_string)) # Check files chain_lib.check_for_required_files( args.feat_dir, args.tree_dir, args.lat_dir if args.egs_dir is None else None) # Copy phones.txt from tree-dir to dir. Later, steps/nnet3/decode.sh will # use it to check compatibility between training and decoding phone-sets. shutil.copy('{0}/phones.txt'.format(args.tree_dir), args.dir) # Set some variables. num_jobs = common_lib.get_number_of_jobs(args.tree_dir) feat_dim = common_lib.get_feat_dim(args.feat_dir) ivector_dim = common_lib.get_ivector_dim(args.online_ivector_dir) ivector_id = common_lib.get_ivector_extractor_id(args.online_ivector_dir) # split the training data into parts for individual jobs # we will use the same number of jobs as that used for alignment common_lib.execute_command("utils/split_data.sh {0} {1}" "".format(args.feat_dir, num_jobs)) with open('{0}/num_jobs'.format(args.dir), 'w') as f: f.write(str(num_jobs)) if args.input_model is None: config_dir = '{0}/configs'.format(args.dir) var_file = '{0}/vars'.format(config_dir) variables = common_train_lib.parse_generic_config_vars_file(var_file) else: # If args.input_model is specified, the model left and right contexts # are computed using input_model. variables = common_train_lib.get_input_model_info(args.input_model) # Set some variables. try: model_left_context = variables['model_left_context'] model_right_context = variables['model_right_context'] except KeyError as e: raise Exception("KeyError {0}: Variables need to be defined in " "{1}".format(str(e), '{0}/configs'.format(args.dir))) left_context = args.chunk_left_context + model_left_context right_context = args.chunk_right_context + model_right_context left_context_initial = (args.chunk_left_context_initial + model_left_context if args.chunk_left_context_initial >= 0 else -1) right_context_final = (args.chunk_right_context_final + model_right_context if args.chunk_right_context_final >= 0 else -1) # Initialize as "raw" nnet, prior to training the LDA-like preconditioning # matrix. This first config just does any initial splicing that we do; # we do this as it's a convenient way to get the stats for the 'lda-like' # transform. if (args.stage <= -6): logger.info("Creating phone language-model") chain_lib.create_phone_lm(args.dir, args.tree_dir, run_opts, lm_opts=args.lm_opts) if (args.stage <= -5): logger.info("Creating denominator FST") shutil.copy('{0}/tree'.format(args.tree_dir), args.dir) chain_lib.create_denominator_fst(args.dir, args.tree_dir, run_opts) if ((args.stage <= -4) and os.path.exists("{0}/configs/init.config".format(args.dir)) and (args.input_model is None)): logger.info("Initializing a basic network for estimating " "preconditioning matrix") common_lib.execute_command("""{command} {dir}/log/nnet_init.log \ nnet3-init --srand=-2 {dir}/configs/init.config \ {dir}/init.raw""".format(command=run_opts.command, dir=args.dir)) egs_left_context = left_context + args.frame_subsampling_factor // 2 egs_right_context = right_context + args.frame_subsampling_factor // 2 # note: the '+ args.frame_subsampling_factor / 2' is to allow for the # fact that we'll be shifting the data slightly during training to give # variety to the training data. egs_left_context_initial = (left_context_initial + args.frame_subsampling_factor // 2 if left_context_initial >= 0 else -1) egs_right_context_final = (right_context_final + args.frame_subsampling_factor // 2 if right_context_final >= 0 else -1) default_egs_dir = '{0}/egs'.format(args.dir) if ((args.stage <= -3) and args.egs_dir is None): logger.info("Generating egs") if (not os.path.exists("{0}/den.fst".format(args.dir)) or not os.path.exists("{0}/normalization.fst".format(args.dir)) or not os.path.exists("{0}/tree".format(args.dir))): raise Exception("Chain egs generation expects {0}/den.fst, " "{0}/normalization.fst and {0}/tree " "to exist.".format(args.dir)) # this is where get_egs.sh is called. chain_lib.generate_chain_egs( dir=args.dir, data=args.feat_dir, lat_dir=args.lat_dir, egs_dir=default_egs_dir, left_context=egs_left_context, right_context=egs_right_context, left_context_initial=egs_left_context_initial, right_context_final=egs_right_context_final, run_opts=run_opts, left_tolerance=args.left_tolerance, right_tolerance=args.right_tolerance, frame_subsampling_factor=args.frame_subsampling_factor, alignment_subsampling_factor=args.alignment_subsampling_factor, frames_per_eg_str=args.chunk_width, srand=args.srand, egs_opts=args.egs_opts, cmvn_opts=args.cmvn_opts, online_ivector_dir=args.online_ivector_dir, frames_per_iter=args.frames_per_iter, stage=args.egs_stage) if args.egs_dir is None: egs_dir = default_egs_dir else: egs_dir = args.egs_dir [egs_left_context, egs_right_context, frames_per_eg_str, num_archives] = (common_train_lib.verify_egs_dir( egs_dir, feat_dim, ivector_dim, ivector_id, egs_left_context, egs_right_context, egs_left_context_initial, egs_right_context_final)) assert (args.chunk_width == frames_per_eg_str) num_archives_expanded = num_archives * args.frame_subsampling_factor if (args.num_jobs_final > num_archives_expanded): raise Exception('num_jobs_final cannot exceed the ' 'expanded number of archives') # copy the properties of the egs to dir for # use during decoding logger.info("Copying the properties from {0} to {1}".format( egs_dir, args.dir)) common_train_lib.copy_egs_properties_to_exp_dir(egs_dir, args.dir) if not os.path.exists('{0}/valid_diagnostic.cegs'.format(egs_dir)): if (not os.path.exists('{0}/valid_diagnostic.scp'.format(egs_dir))): raise Exception('Neither {0}/valid_diagnostic.cegs nor ' '{0}/valid_diagnostic.scp exist.' 'This script expects one of them.'.format(egs_dir)) use_multitask_egs = True else: use_multitask_egs = False if ((args.stage <= -2) and (os.path.exists(args.dir + "/configs/init.config")) and (args.input_model is None)): logger.info('Computing the preconditioning matrix for input features') chain_lib.compute_preconditioning_matrix( args.dir, egs_dir, num_archives, run_opts, max_lda_jobs=args.max_lda_jobs, rand_prune=args.rand_prune, use_multitask_egs=use_multitask_egs) if (args.stage <= -1): logger.info("Preparing the initial acoustic model.") chain_lib.prepare_initial_acoustic_model(args.dir, run_opts, input_model=args.input_model) with open("{0}/frame_subsampling_factor".format(args.dir), "w") as f: f.write(str(args.frame_subsampling_factor)) # set num_iters so that as close as possible, we process the data # $num_epochs times, i.e. $num_iters*$avg_num_jobs) == # $num_epochs*$num_archives, where # avg_num_jobs=(num_jobs_initial+num_jobs_final)/2. num_archives_to_process = int(args.num_epochs * num_archives_expanded) num_archives_processed = 0 num_iters = ((num_archives_to_process * 2) // (args.num_jobs_initial + args.num_jobs_final)) # If do_final_combination is True, compute the set of models_to_combine. # Otherwise, models_to_combine will be none. if args.do_final_combination: models_to_combine = common_train_lib.get_model_combine_iters( num_iters, args.num_epochs, num_archives_expanded, args.max_models_combine, args.num_jobs_final) else: models_to_combine = None min_deriv_time = None max_deriv_time_relative = None if args.deriv_truncate_margin is not None: min_deriv_time = -args.deriv_truncate_margin - model_left_context max_deriv_time_relative = \ args.deriv_truncate_margin + model_right_context logger.info("Training will run for {0} epochs = " "{1} iterations".format(args.num_epochs, num_iters)) for iter in range(num_iters): if (args.exit_stage is not None) and (iter == args.exit_stage): logger.info("Exiting early due to --exit-stage {0}".format(iter)) return current_num_jobs = int(0.5 + args.num_jobs_initial + (args.num_jobs_final - args.num_jobs_initial) * float(iter) / num_iters) if args.stage <= iter: model_file = "{dir}/{iter}.mdl".format(dir=args.dir, iter=iter) lrate = common_train_lib.get_learning_rate( iter, current_num_jobs, num_iters, num_archives_processed, num_archives_to_process, args.initial_effective_lrate, args.final_effective_lrate) shrinkage_value = 1.0 - (args.proportional_shrink * lrate) if shrinkage_value <= 0.5: raise Exception( "proportional-shrink={0} is too large, it gives " "shrink-value={1}".format(args.proportional_shrink, shrinkage_value)) if args.shrink_value < shrinkage_value: shrinkage_value = ( args.shrink_value if common_train_lib.should_do_shrinkage( iter, model_file, args.shrink_saturation_threshold) else shrinkage_value) percent = num_archives_processed * 100.0 / num_archives_to_process epoch = (num_archives_processed * args.num_epochs / num_archives_to_process) shrink_info_str = '' if shrinkage_value != 1.0: shrink_info_str = 'shrink: {0:0.5f}'.format(shrinkage_value) logger.info("Iter: {0}/{1} " "Epoch: {2:0.2f}/{3:0.1f} ({4:0.1f}% complete) " "lr: {5:0.6f} {6}".format(iter, num_iters - 1, epoch, args.num_epochs, percent, lrate, shrink_info_str)) chain_lib.train_one_iteration( dir=args.dir, iter=iter, srand=args.srand, egs_dir=egs_dir, num_jobs=current_num_jobs, num_archives_processed=num_archives_processed, num_archives=num_archives, learning_rate=lrate, dropout_edit_string=common_train_lib.get_dropout_edit_string( args.dropout_schedule, float(num_archives_processed) / num_archives_to_process, iter), train_opts=' '.join(args.train_opts), shrinkage_value=shrinkage_value, num_chunk_per_minibatch_str=args.num_chunk_per_minibatch, apply_deriv_weights=args.apply_deriv_weights, min_deriv_time=min_deriv_time, max_deriv_time_relative=max_deriv_time_relative, l2_regularize=args.l2_regularize, xent_regularize=args.xent_regularize, leaky_hmm_coefficient=args.leaky_hmm_coefficient, momentum=args.momentum, max_param_change=args.max_param_change, shuffle_buffer_size=args.shuffle_buffer_size, frame_subsampling_factor=args.frame_subsampling_factor, run_opts=run_opts, backstitch_training_scale=args.backstitch_training_scale, backstitch_training_interval=args.backstitch_training_interval, use_multitask_egs=use_multitask_egs) if args.cleanup: # do a clean up everything but the last 2 models, under certain # conditions common_train_lib.remove_model(args.dir, iter - 2, num_iters, models_to_combine, args.preserve_model_interval) if args.email is not None: reporting_iter_interval = num_iters * args.reporting_interval if iter % reporting_iter_interval == 0: # lets do some reporting [report, times, data] = (nnet3_log_parse.generate_acc_logprob_report( args.dir, "log-probability")) message = report subject = ("Update : Expt {dir} : " "Iter {iter}".format(dir=args.dir, iter=iter)) common_lib.send_mail(message, subject, args.email) num_archives_processed = num_archives_processed + current_num_jobs if args.stage <= num_iters: if args.do_final_combination: logger.info("Doing final combination to produce final.mdl") chain_lib.combine_models( dir=args.dir, num_iters=num_iters, models_to_combine=models_to_combine, num_chunk_per_minibatch_str=args.num_chunk_per_minibatch, egs_dir=egs_dir, leaky_hmm_coefficient=args.leaky_hmm_coefficient, l2_regularize=args.l2_regularize, xent_regularize=args.xent_regularize, run_opts=run_opts, max_objective_evaluations=args.max_objective_evaluations, use_multitask_egs=use_multitask_egs) else: logger.info("Copying the last-numbered model to final.mdl") common_lib.force_symlink("{0}.mdl".format(num_iters), "{0}/final.mdl".format(args.dir)) chain_lib.compute_train_cv_probabilities( dir=args.dir, iter=num_iters, egs_dir=egs_dir, l2_regularize=args.l2_regularize, xent_regularize=args.xent_regularize, leaky_hmm_coefficient=args.leaky_hmm_coefficient, run_opts=run_opts, use_multitask_egs=use_multitask_egs) common_lib.force_symlink( "compute_prob_valid.{iter}.log" "".format(iter=num_iters), "{dir}/log/compute_prob_valid.final.log".format(dir=args.dir)) if args.cleanup: logger.info("Cleaning up the experiment directory " "{0}".format(args.dir)) remove_egs = args.remove_egs if args.egs_dir is not None: # this egs_dir was not created by this experiment so we will not # delete it remove_egs = False # leave the last-two-numbered models, for diagnostic reasons. common_train_lib.clean_nnet_dir( args.dir, num_iters - 1, egs_dir, preserve_model_interval=args.preserve_model_interval, remove_egs=remove_egs) # do some reporting [report, times, data ] = nnet3_log_parse.generate_acc_logprob_report(args.dir, "log-probability") if args.email is not None: common_lib.send_mail( report, "Update : Expt {0} : " "complete".format(args.dir), args.email) with open("{dir}/accuracy.report".format(dir=args.dir), "w") as f: f.write(report) common_lib.execute_command("steps/info/chain_dir_info.pl " "{0}".format(args.dir))
def train(args, run_opts): """ The main function for training. Args: args: a Namespace object with the required parameters obtained from the function process_args() run_opts: RunOpts object obtained from the process_args() """ arg_string = pprint.pformat(vars(args)) logger.info("Arguments for the experiment\n{0}".format(arg_string)) # Check files chain_lib.check_for_required_files(args.feat_dir, args.tree_dir, args.lat_dir if args.egs_dir is None else None) # Copy phones.txt from tree-dir to dir. Later, steps/nnet3/decode.sh will # use it to check compatibility between training and decoding phone-sets. shutil.copy('{0}/phones.txt'.format(args.tree_dir), args.dir) # Set some variables. num_jobs = common_lib.get_number_of_jobs(args.tree_dir) feat_dim = common_lib.get_feat_dim(args.feat_dir) ivector_dim = common_lib.get_ivector_dim(args.online_ivector_dir) ivector_id = common_lib.get_ivector_extractor_id(args.online_ivector_dir) # split the training data into parts for individual jobs # we will use the same number of jobs as that used for alignment common_lib.execute_command("utils/split_data.sh {0} {1}" "".format(args.feat_dir, num_jobs)) with open('{0}/num_jobs'.format(args.dir), 'w') as f: f.write(str(num_jobs)) if args.input_model is None: config_dir = '{0}/configs'.format(args.dir) var_file = '{0}/vars'.format(config_dir) variables = common_train_lib.parse_generic_config_vars_file(var_file) else: # If args.input_model is specified, the model left and right contexts # are computed using input_model. variables = common_train_lib.get_input_model_info(args.input_model) # Set some variables. try: model_left_context = variables['model_left_context'] model_right_context = variables['model_right_context'] except KeyError as e: raise Exception("KeyError {0}: Variables need to be defined in " "{1}".format(str(e), '{0}/configs'.format(args.dir))) left_context = args.chunk_left_context + model_left_context right_context = args.chunk_right_context + model_right_context left_context_initial = (args.chunk_left_context_initial + model_left_context if args.chunk_left_context_initial >= 0 else -1) right_context_final = (args.chunk_right_context_final + model_right_context if args.chunk_right_context_final >= 0 else -1) # Initialize as "raw" nnet, prior to training the LDA-like preconditioning # matrix. This first config just does any initial splicing that we do; # we do this as it's a convenient way to get the stats for the 'lda-like' # transform. if (args.stage <= -6): logger.info("Creating phone language-model") chain_lib.create_phone_lm(args.dir, args.tree_dir, run_opts, lm_opts=args.lm_opts) if (args.stage <= -5): logger.info("Creating denominator FST") shutil.copy('{0}/tree'.format(args.tree_dir), args.dir) chain_lib.create_denominator_fst(args.dir, args.tree_dir, run_opts) if ((args.stage <= -4) and os.path.exists("{0}/configs/init.config".format(args.dir)) and (args.input_model is None)): logger.info("Initializing a basic network for estimating " "preconditioning matrix") common_lib.execute_command( """{command} {dir}/log/nnet_init.log \ nnet3-init --srand=-2 {dir}/configs/init.config \ {dir}/init.raw""".format(command=run_opts.command, dir=args.dir)) egs_left_context = left_context + args.frame_subsampling_factor // 2 egs_right_context = right_context + args.frame_subsampling_factor // 2 # note: the '+ args.frame_subsampling_factor / 2' is to allow for the # fact that we'll be shifting the data slightly during training to give # variety to the training data. egs_left_context_initial = (left_context_initial + args.frame_subsampling_factor // 2 if left_context_initial >= 0 else -1) egs_right_context_final = (right_context_final + args.frame_subsampling_factor // 2 if right_context_final >= 0 else -1) default_egs_dir = '{0}/egs'.format(args.dir) if ((args.stage <= -3) and args.egs_dir is None): logger.info("Generating egs") if (not os.path.exists("{0}/den.fst".format(args.dir)) or not os.path.exists("{0}/normalization.fst".format(args.dir)) or not os.path.exists("{0}/tree".format(args.dir))): raise Exception("Chain egs generation expects {0}/den.fst, " "{0}/normalization.fst and {0}/tree " "to exist.".format(args.dir)) # this is where get_egs.sh is called. chain_lib.generate_chain_egs( dir=args.dir, data=args.feat_dir, lat_dir=args.lat_dir, egs_dir=default_egs_dir, left_context=egs_left_context, right_context=egs_right_context, left_context_initial=egs_left_context_initial, right_context_final=egs_right_context_final, run_opts=run_opts, left_tolerance=args.left_tolerance, right_tolerance=args.right_tolerance, frame_subsampling_factor=args.frame_subsampling_factor, alignment_subsampling_factor=args.alignment_subsampling_factor, frames_per_eg_str=args.chunk_width, srand=args.srand, egs_opts=args.egs_opts, cmvn_opts=args.cmvn_opts, online_ivector_dir=args.online_ivector_dir, frames_per_iter=args.frames_per_iter, stage=args.egs_stage) if args.egs_dir is None: egs_dir = default_egs_dir else: egs_dir = args.egs_dir [egs_left_context, egs_right_context, frames_per_eg_str, num_archives] = ( common_train_lib.verify_egs_dir(egs_dir, feat_dim, ivector_dim, ivector_id, egs_left_context, egs_right_context, egs_left_context_initial, egs_right_context_final)) assert(args.chunk_width == frames_per_eg_str) num_archives_expanded = num_archives * args.frame_subsampling_factor if (args.num_jobs_final > num_archives_expanded): raise Exception('num_jobs_final cannot exceed the ' 'expanded number of archives') # copy the properties of the egs to dir for # use during decoding logger.info("Copying the properties from {0} to {1}".format(egs_dir, args.dir)) common_train_lib.copy_egs_properties_to_exp_dir(egs_dir, args.dir) if not os.path.exists('{0}/valid_diagnostic.cegs'.format(egs_dir)): if (not os.path.exists('{0}/valid_diagnostic.scp'.format(egs_dir))): raise Exception('Neither {0}/valid_diagnostic.cegs nor ' '{0}/valid_diagnostic.scp exist.' 'This script expects one of them.'.format(egs_dir)) use_multitask_egs = True else: use_multitask_egs = False if ((args.stage <= -2) and (os.path.exists(args.dir+"/configs/init.config")) and (args.input_model is None)): logger.info('Computing the preconditioning matrix for input features') chain_lib.compute_preconditioning_matrix( args.dir, egs_dir, num_archives, run_opts, max_lda_jobs=args.max_lda_jobs, rand_prune=args.rand_prune, use_multitask_egs=use_multitask_egs) if (args.stage <= -1): logger.info("Preparing the initial acoustic model.") chain_lib.prepare_initial_acoustic_model(args.dir, run_opts, input_model=args.input_model) with open("{0}/frame_subsampling_factor".format(args.dir), "w") as f: f.write(str(args.frame_subsampling_factor)) # set num_iters so that as close as possible, we process the data # $num_epochs times, i.e. $num_iters*$avg_num_jobs) == # $num_epochs*$num_archives, where # avg_num_jobs=(num_jobs_initial+num_jobs_final)/2. num_archives_to_process = int(args.num_epochs * num_archives_expanded) num_archives_processed = 0 num_iters = ((num_archives_to_process * 2) // (args.num_jobs_initial + args.num_jobs_final)) # If do_final_combination is True, compute the set of models_to_combine. # Otherwise, models_to_combine will be none. if args.do_final_combination: models_to_combine = common_train_lib.get_model_combine_iters( num_iters, args.num_epochs, num_archives_expanded, args.max_models_combine, args.num_jobs_final) else: models_to_combine = None min_deriv_time = None max_deriv_time_relative = None if args.deriv_truncate_margin is not None: min_deriv_time = -args.deriv_truncate_margin - model_left_context max_deriv_time_relative = \ args.deriv_truncate_margin + model_right_context logger.info("Training will run for {0} epochs = " "{1} iterations".format(args.num_epochs, num_iters)) for iter in range(num_iters): if (args.exit_stage is not None) and (iter == args.exit_stage): logger.info("Exiting early due to --exit-stage {0}".format(iter)) return current_num_jobs = int(0.5 + args.num_jobs_initial + (args.num_jobs_final - args.num_jobs_initial) * float(iter) / num_iters) if args.stage <= iter: model_file = "{dir}/{iter}.mdl".format(dir=args.dir, iter=iter) lrate = common_train_lib.get_learning_rate(iter, current_num_jobs, num_iters, num_archives_processed, num_archives_to_process, args.initial_effective_lrate, args.final_effective_lrate) shrinkage_value = 1.0 - (args.proportional_shrink * lrate) if shrinkage_value <= 0.5: raise Exception("proportional-shrink={0} is too large, it gives " "shrink-value={1}".format(args.proportional_shrink, shrinkage_value)) if args.shrink_value < shrinkage_value: shrinkage_value = (args.shrink_value if common_train_lib.should_do_shrinkage( iter, model_file, args.shrink_saturation_threshold) else shrinkage_value) percent = num_archives_processed * 100.0 / num_archives_to_process epoch = (num_archives_processed * args.num_epochs / num_archives_to_process) shrink_info_str = '' if shrinkage_value != 1.0: shrink_info_str = 'shrink: {0:0.5f}'.format(shrinkage_value) logger.info("Iter: {0}/{1} " "Epoch: {2:0.2f}/{3:0.1f} ({4:0.1f}% complete) " "lr: {5:0.6f} {6}".format(iter, num_iters - 1, epoch, args.num_epochs, percent, lrate, shrink_info_str)) chain_lib.train_one_iteration( dir=args.dir, iter=iter, srand=args.srand, egs_dir=egs_dir, num_jobs=current_num_jobs, num_archives_processed=num_archives_processed, num_archives=num_archives, learning_rate=lrate, dropout_edit_string=common_train_lib.get_dropout_edit_string( args.dropout_schedule, float(num_archives_processed) / num_archives_to_process, iter), train_opts=' '.join(args.train_opts), shrinkage_value=shrinkage_value, num_chunk_per_minibatch_str=args.num_chunk_per_minibatch, apply_deriv_weights=args.apply_deriv_weights, min_deriv_time=min_deriv_time, max_deriv_time_relative=max_deriv_time_relative, l2_regularize=args.l2_regularize, xent_regularize=args.xent_regularize, leaky_hmm_coefficient=args.leaky_hmm_coefficient, momentum=args.momentum, max_param_change=args.max_param_change, shuffle_buffer_size=args.shuffle_buffer_size, frame_subsampling_factor=args.frame_subsampling_factor, run_opts=run_opts, backstitch_training_scale=args.backstitch_training_scale, backstitch_training_interval=args.backstitch_training_interval, use_multitask_egs=use_multitask_egs) if args.cleanup: # do a clean up everything but the last 2 models, under certain # conditions common_train_lib.remove_model( args.dir, iter-2, num_iters, models_to_combine, args.preserve_model_interval) if args.email is not None: reporting_iter_interval = num_iters * args.reporting_interval if iter % reporting_iter_interval == 0: # lets do some reporting [report, times, data] = ( nnet3_log_parse.generate_acc_logprob_report( args.dir, "log-probability")) message = report subject = ("Update : Expt {dir} : " "Iter {iter}".format(dir=args.dir, iter=iter)) common_lib.send_mail(message, subject, args.email) num_archives_processed = num_archives_processed + current_num_jobs if args.stage <= num_iters: if args.do_final_combination: logger.info("Doing final combination to produce final.mdl") chain_lib.combine_models( dir=args.dir, num_iters=num_iters, models_to_combine=models_to_combine, num_chunk_per_minibatch_str=args.num_chunk_per_minibatch, egs_dir=egs_dir, leaky_hmm_coefficient=args.leaky_hmm_coefficient, l2_regularize=args.l2_regularize, xent_regularize=args.xent_regularize, run_opts=run_opts, max_objective_evaluations=args.max_objective_evaluations, use_multitask_egs=use_multitask_egs) else: logger.info("Copying the last-numbered model to final.mdl") common_lib.force_symlink("{0}.mdl".format(num_iters), "{0}/final.mdl".format(args.dir)) chain_lib.compute_train_cv_probabilities( dir=args.dir, iter=num_iters, egs_dir=egs_dir, l2_regularize=args.l2_regularize, xent_regularize=args.xent_regularize, leaky_hmm_coefficient=args.leaky_hmm_coefficient, run_opts=run_opts, use_multitask_egs=use_multitask_egs) common_lib.force_symlink("compute_prob_valid.{iter}.log" "".format(iter=num_iters), "{dir}/log/compute_prob_valid.final.log".format( dir=args.dir)) if args.cleanup: logger.info("Cleaning up the experiment directory " "{0}".format(args.dir)) remove_egs = args.remove_egs if args.egs_dir is not None: # this egs_dir was not created by this experiment so we will not # delete it remove_egs = False # leave the last-two-numbered models, for diagnostic reasons. common_train_lib.clean_nnet_dir( args.dir, num_iters - 1, egs_dir, preserve_model_interval=args.preserve_model_interval, remove_egs=remove_egs) # do some reporting [report, times, data] = nnet3_log_parse.generate_acc_logprob_report( args.dir, "log-probability") if args.email is not None: common_lib.send_mail(report, "Update : Expt {0} : " "complete".format(args.dir), args.email) with open("{dir}/accuracy.report".format(dir=args.dir), "w") as f: f.write(report) common_lib.execute_command("steps/info/chain_dir_info.pl " "{0}".format(args.dir))