onorma.py 文件源码

def _get_kernel_map(self, X, y):
        # When adding a new kernel, update this table and the _get_kernel_map
        # method
        if callable(self.kernel):
            ov_kernel = self.kernel
        elif type(self.kernel) is str:
            # 1) check string and assign the right parameters
            if self.kernel == 'DGauss':
                self.A_ = self._default_decomposable_op(y)
                kernel_params = {'A': self.A_, 'scalar_kernel': rbf_kernel,
                                 'scalar_kernel_params': {'gamma': self.gamma}}
            elif self.kernel == 'DotProduct':
                kernel_params = {'mu': self.mu, 'p': y.shape[1]}
            elif self.kernel == 'DPeriodic':
                self.A_ = self._default_decomposable_op(y)
                self.period_ = self._default_period(X, y)
                kernel_params = {'A': self.A_,
                                 'scalar_kernel': first_periodic_kernel,
                                 'scalar_kernel_params': {'gamma': self.theta,
                                                          'period':
                                                          self.period_}, }
            else:
                raise NotImplemented('unsupported kernel')
            # 2) Uses lookup table to select the right kernel from string
            ov_kernel = PAIRWISE_KERNEL_FUNCTIONS[self.kernel](**kernel_params)
        else:
            raise NotImplemented('unsupported kernel')
        return ov_kernel