view search_model_validation.py @ 16:939e3666cad5 draft

planemo upload for repository https://github.com/bgruening/galaxytools/tree/master/tools/sklearn commit 57f4407e278a615f47a377a3328782b1d8e0b54d

import imblearn
import json
import numpy as np
import os
import pandas
import pickle
import skrebate
import sklearn
import sys
import xgboost
import warnings
from imblearn import under_sampling, over_sampling, combine
from imblearn.pipeline import Pipeline as imbPipeline
from sklearn import (cluster, compose, decomposition, ensemble, feature_extraction,
                    feature_selection, gaussian_process, kernel_approximation, metrics,
                    model_selection, naive_bayes, neighbors, pipeline, preprocessing,
                    svm, linear_model, tree, discriminant_analysis)
from sklearn.exceptions import FitFailedWarning
from sklearn.externals import joblib
from utils import get_cv, get_scoring, get_X_y, load_model, read_columns, SafeEval


N_JOBS = int(os.environ.get('GALAXY_SLOTS', 1))


def get_search_params(params_builder):
    search_params = {}
    safe_eval = SafeEval(load_scipy=True, load_numpy=True)
    safe_eval_es = SafeEval(load_estimators=True)

    for p in params_builder['param_set']:
        search_p = p['search_param_selector']['search_p']
        if search_p.strip() == '':
            continue
        param_type = p['search_param_selector']['selected_param_type']

        lst = search_p.split(':')
        assert (len(lst) == 2), "Error, make sure there is one and only one colon in search parameter input."
        literal = lst[1].strip()
        param_name = lst[0].strip()
        if param_name:
            if param_name.lower() == 'n_jobs':
                sys.exit("Parameter `%s` is invalid for search." %param_name)
            elif not param_name.endswith('-'):
                ev = safe_eval(literal)
                if param_type == 'final_estimator_p':
                    search_params['estimator__' + param_name] = ev
                else:
                    search_params['preprocessing_' + param_type[5:6] + '__' + param_name] = ev
            else:
                # only for estimator eval, add `-` to the end of param
                #TODO maybe add regular express check
                ev = safe_eval_es(literal)
                for obj in ev:
                    if 'n_jobs' in obj.get_params():
                        obj.set_params( n_jobs=N_JOBS )
                if param_type == 'final_estimator_p':
                    search_params['estimator__' + param_name[:-1]] = ev
                else:
                    search_params['preprocessing_' + param_type[5:6] + '__' + param_name[:-1]] = ev
        elif param_type != 'final_estimator_p':
            #TODO regular express check ?
            ev = safe_eval_es(literal)
            preprocessors = [preprocessing.StandardScaler(), preprocessing.Binarizer(), preprocessing.Imputer(),
                            preprocessing.MaxAbsScaler(), preprocessing.Normalizer(), preprocessing.MinMaxScaler(),
                            preprocessing.PolynomialFeatures(),preprocessing.RobustScaler(),
                            feature_selection.SelectKBest(), feature_selection.GenericUnivariateSelect(),
                            feature_selection.SelectPercentile(), feature_selection.SelectFpr(), feature_selection.SelectFdr(),
                            feature_selection.SelectFwe(), feature_selection.VarianceThreshold(),
                            decomposition.FactorAnalysis(random_state=0), decomposition.FastICA(random_state=0), decomposition.IncrementalPCA(),
                            decomposition.KernelPCA(random_state=0, n_jobs=N_JOBS), decomposition.LatentDirichletAllocation(random_state=0, n_jobs=N_JOBS),
                            decomposition.MiniBatchDictionaryLearning(random_state=0, n_jobs=N_JOBS),
                            decomposition.MiniBatchSparsePCA(random_state=0, n_jobs=N_JOBS), decomposition.NMF(random_state=0),
                            decomposition.PCA(random_state=0), decomposition.SparsePCA(random_state=0, n_jobs=N_JOBS),
                            decomposition.TruncatedSVD(random_state=0),
                            kernel_approximation.Nystroem(random_state=0), kernel_approximation.RBFSampler(random_state=0),
                            kernel_approximation.AdditiveChi2Sampler(), kernel_approximation.SkewedChi2Sampler(random_state=0),
                            cluster.FeatureAgglomeration(),
                            skrebate.ReliefF(n_jobs=N_JOBS), skrebate.SURF(n_jobs=N_JOBS), skrebate.SURFstar(n_jobs=N_JOBS),
                            skrebate.MultiSURF(n_jobs=N_JOBS), skrebate.MultiSURFstar(n_jobs=N_JOBS),
                            imblearn.under_sampling.ClusterCentroids(random_state=0, n_jobs=N_JOBS),
                            imblearn.under_sampling.CondensedNearestNeighbour(random_state=0, n_jobs=N_JOBS),
                            imblearn.under_sampling.EditedNearestNeighbours(random_state=0, n_jobs=N_JOBS),
                            imblearn.under_sampling.RepeatedEditedNearestNeighbours(random_state=0, n_jobs=N_JOBS),
                            imblearn.under_sampling.AllKNN(random_state=0, n_jobs=N_JOBS),
                            imblearn.under_sampling.InstanceHardnessThreshold(random_state=0, n_jobs=N_JOBS),
                            imblearn.under_sampling.NearMiss(random_state=0, n_jobs=N_JOBS),
                            imblearn.under_sampling.NeighbourhoodCleaningRule(random_state=0, n_jobs=N_JOBS),
                            imblearn.under_sampling.OneSidedSelection(random_state=0, n_jobs=N_JOBS),
                            imblearn.under_sampling.RandomUnderSampler(random_state=0),
                            imblearn.under_sampling.TomekLinks(random_state=0, n_jobs=N_JOBS),
                            imblearn.over_sampling.ADASYN(random_state=0, n_jobs=N_JOBS),
                            imblearn.over_sampling.RandomOverSampler(random_state=0),
                            imblearn.over_sampling.SMOTE(random_state=0, n_jobs=N_JOBS),
                            imblearn.over_sampling.SVMSMOTE(random_state=0, n_jobs=N_JOBS),
                            imblearn.over_sampling.BorderlineSMOTE(random_state=0, n_jobs=N_JOBS),
                            imblearn.over_sampling.SMOTENC(categorical_features=[], random_state=0, n_jobs=N_JOBS),
                            imblearn.combine.SMOTEENN(random_state=0), imblearn.combine.SMOTETomek(random_state=0)]
            newlist = []
            for obj in ev:
                if obj is None:
                    newlist.append(None)
                elif obj == 'all_0':
                    newlist.extend(preprocessors[0:36])
                elif obj == 'sk_prep_all':      # no KernalCenter()
                    newlist.extend(preprocessors[0:8])
                elif obj == 'fs_all':
                    newlist.extend(preprocessors[8:15])
                elif obj == 'decomp_all':
                    newlist.extend(preprocessors[15:26])
                elif obj == 'k_appr_all':
                    newlist.extend(preprocessors[26:30])
                elif obj == 'reb_all':
                    newlist.extend(preprocessors[31:36])
                elif obj == 'imb_all':
                    newlist.extend(preprocessors[36:55])
                elif  type(obj) is int and -1 < obj < len(preprocessors):
                    newlist.append(preprocessors[obj])
                elif hasattr(obj, 'get_params'):       # user object
                    if 'n_jobs' in obj.get_params():
                        newlist.append( obj.set_params(n_jobs=N_JOBS) )
                    else:
                        newlist.append(obj)
                else:
                    sys.exit("Unsupported preprocessor type: %r" %(obj))
            search_params['preprocessing_' + param_type[5:6]] = newlist
        else:
            sys.exit("Parameter name of the final estimator can't be skipped!")

    return search_params


if __name__ == '__main__':

    warnings.simplefilter('ignore')

    input_json_path = sys.argv[1]
    with open(input_json_path, 'r') as param_handler:
        params = json.load(param_handler)

    infile_pipeline = sys.argv[2]
    infile1 = sys.argv[3]
    infile2 = sys.argv[4]
    outfile_result = sys.argv[5]
    if len(sys.argv) > 6:
        outfile_estimator = sys.argv[6]
    else:
        outfile_estimator = None

    params_builder = params['search_schemes']['search_params_builder']

    input_type = params['input_options']['selected_input']
    if input_type == 'tabular':
        header = 'infer' if params['input_options']['header1'] else None
        column_option = params['input_options']['column_selector_options_1']['selected_column_selector_option']
        if column_option in ['by_index_number', 'all_but_by_index_number', 'by_header_name', 'all_but_by_header_name']:
            c = params['input_options']['column_selector_options_1']['col1']
        else:
            c = None
        X = read_columns(
                infile1,
                c = c,
                c_option = column_option,
                sep='\t',
                header=header,
                parse_dates=True
        )
    else:
        X = mmread(open(infile1, 'r'))

    header = 'infer' if params['input_options']['header2'] else None
    column_option = params['input_options']['column_selector_options_2']['selected_column_selector_option2']
    if column_option in ['by_index_number', 'all_but_by_index_number', 'by_header_name', 'all_but_by_header_name']:
        c = params['input_options']['column_selector_options_2']['col2']
    else:
        c = None
    y = read_columns(
            infile2,
            c = c,
            c_option = column_option,
            sep='\t',
            header=header,
            parse_dates=True
    )
    y = y.ravel()

    optimizer = params['search_schemes']['selected_search_scheme']
    optimizer = getattr(model_selection, optimizer)

    options = params['search_schemes']['options']
    splitter, groups = get_cv(options.pop('cv_selector'))
    if groups is None:
        options['cv'] = splitter
    elif groups == '':
        options['cv'] = list( splitter.split(X, y, groups=None) )
    else:
        options['cv'] = list( splitter.split(X, y, groups=groups) )
    options['n_jobs'] = N_JOBS
    primary_scoring = options['scoring']['primary_scoring']
    options['scoring'] = get_scoring(options['scoring'])
    if options['error_score']:
        options['error_score'] = 'raise'
    else:
        options['error_score'] = np.NaN
    if options['refit'] and isinstance(options['scoring'], dict):
        options['refit'] = 'primary'
    if 'pre_dispatch' in options and options['pre_dispatch'] == '':
        options['pre_dispatch'] = None

    with open(infile_pipeline, 'rb') as pipeline_handler:
        pipeline = load_model(pipeline_handler)

    search_params = get_search_params(params_builder)
    searcher = optimizer(pipeline, search_params, **options)

    if options['error_score'] == 'raise':
        searcher.fit(X, y)
    else:
        warnings.simplefilter('always', FitFailedWarning)
        with warnings.catch_warnings(record=True) as w:
            try:
                searcher.fit(X, y)
            except ValueError:
                pass
            for warning in w:
                print(repr(warning.message))

    cv_result = pandas.DataFrame(searcher.cv_results_)
    cv_result.rename(inplace=True, columns={'mean_test_primary': 'mean_test_'+primary_scoring, 'rank_test_primary': 'rank_test_'+primary_scoring})
    cv_result.to_csv(path_or_buf=outfile_result, sep='\t', header=True, index=False)

    if outfile_estimator:
        with open(outfile_estimator, 'wb') as output_handler:
            pickle.dump(searcher.best_estimator_, output_handler, pickle.HIGHEST_PROTOCOL)