예제 #1
0
 def _wrapper(self, coef, intercept, loss_function, penalty_type, alpha, C,
              l1_ratio, dataset, n_iter, fit_intercept, verbose, shuffle,
              seed, pos_weight, neg_weight, learning_rate_type, eta0,
              power_t, t_, intercept_decay, coefArray, interceptArray, i):
     print("Start %s" % i)
     coef, intercept = plain_sgd(coef, intercept, loss_function,
                                 penalty_type, alpha, C, l1_ratio, dataset,
                                 n_iter, int(fit_intercept), int(verbose),
                                 int(shuffle), seed, pos_weight, neg_weight,
                                 learning_rate_type, eta0, power_t, t_,
                                 intercept_decay)
     print(coef, intercept)
     coefArray[i] = int(coef[0])
     coefArray[i + 10] = int(coef[1])
     coefArray[i + 20] = int(coef[2])
     interceptArray[i] = int(intercept)
     print("End %s" % i)
    def _wrapper(self,coef, intercept, loss_function,
                     penalty_type, alpha, C, l1_ratio,
                     dataset, n_iter, fit_intercept,
                     verbose, shuffle, seed,
                     pos_weight, neg_weight,
                     learning_rate_type, eta0,
                     power_t, t_, intercept_decay,coefArray,interceptArray,i):
	print("Start %s"%i)
        coef,intercept = plain_sgd(coef, intercept, loss_function,
                                                penalty_type, alpha, C, l1_ratio,
                                                dataset, n_iter, int(fit_intercept),
                                                int(verbose), int(shuffle), seed,
                                                pos_weight, neg_weight,
                                                learning_rate_type, eta0,
                                                power_t, t_, intercept_decay)
        print(coef, intercept)
        coefArray[i] = int(coef[0])
	coefArray[i+10] =int(coef[1])
	coefArray[i+20] =int(coef[2])
        interceptArray[i] = int(intercept)
	print("End %s"%i)
예제 #3
0
    def _fit_regressor(self, X, y, alpha, C, loss, learning_rate,
                       sample_weight, n_iter):
        dataset, intercept_decay = make_dataset(X, y, sample_weight)

        loss_function = self._get_loss_function(loss)
        penalty_type = self._get_penalty_type(self.penalty)
        learning_rate_type = self._get_learning_rate_type(learning_rate)

        if self.t_ is None:
            self.t_ = 1.0

        random_state = check_random_state(self.random_state)
        # numpy mtrand expects a C long which is a signed 32 bit integer under
        # Windows
        seed = random_state.randint(0, np.iinfo(np.int32).max)

        if self.average > 0:
            self.standard_coef_, self.standard_intercept_, \
                self.average_coef_, self.average_intercept_ =\
                average_sgd(self.standard_coef_,
                            self.standard_intercept_[0],
                            self.average_coef_,
                            self.average_intercept_[0],
                            loss_function,
                            penalty_type,
                            alpha, C,
                            self.l1_ratio,
                            dataset,
                            n_iter,
                            int(self.fit_intercept),
                            int(self.verbose),
                            int(self.shuffle),
                            seed,
                            1.0, 1.0,
                            learning_rate_type,
                            self.eta0, self.power_t, self.t_,
                            intercept_decay, self.average)

            self.average_intercept_ = np.atleast_1d(self.average_intercept_)
            self.standard_intercept_ = np.atleast_1d(self.standard_intercept_)
            self.t_ += n_iter * X.shape[0]

            if self.average <= self.t_ - 1.0:
                self.coef_ = self.average_coef_
                self.intercept_ = self.average_intercept_
            else:
                self.coef_ = self.standard_coef_
                self.intercept_ = self.standard_intercept_

        else:
            self.coef_, self.intercept_ = \
                plain_sgd(self.coef_,
                          self.intercept_[0],
                          loss_function,
                          penalty_type,
                          alpha, C,
                          self.l1_ratio,
                          dataset,
                          n_iter,
                          int(self.fit_intercept),
                          int(self.verbose),
                          int(self.shuffle),
                          seed,
                          1.0, 1.0,
                          learning_rate_type,
                          self.eta0, self.power_t, self.t_,
                          intercept_decay)

            self.t_ += n_iter * X.shape[0]
            self.intercept_ = np.atleast_1d(self.intercept_)