当前位置: 首页>>代码示例>>Python>>正文


Python Connector.assign_vstack方法代码示例

本文整理汇总了Python中quagga.connector.Connector.assign_vstack方法的典型用法代码示例。如果您正苦于以下问题:Python Connector.assign_vstack方法的具体用法?Python Connector.assign_vstack怎么用?Python Connector.assign_vstack使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在quagga.connector.Connector的用法示例。


在下文中一共展示了Connector.assign_vstack方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: VerticalStackBlock

# 需要导入模块: from quagga.connector import Connector [as 别名]
# 或者: from quagga.connector.Connector import assign_vstack [as 别名]
class VerticalStackBlock(object):
    """
    Concatenates matrices vertically.

    Parameters
    ----------
    matrices : Matrix (GpuMatrix or CpuMatrix)
        Input matrices that need to be concatenated.
    device_id: int
        Defines the device's id on which the computation will take place
    """

    def __init__(self, *matrices, **kwargs):
        # TODO(sergii): change vsplit to aditive_vsplit for propper gradients accumulation
        self.context = Context(kwargs.get('device_id'))
        device_id = self.context.device_id
        self.matrices = []
        self.dL_dmatrices = []
        self.bpropagable = []
        for matrix in matrices:
            self.bpropagable.append(matrix.bpropagable)
            if matrix.bpropagable:
                matrix, dL_dmatrix = matrix.register_usage(device_id, device_id)
                self.dL_dmatrices.append(dL_dmatrix)
            else:
                matrix = matrix.register_usage(device_id)
            self.matrices.append(matrix)
        nrows = [matrix.nrows for matrix in matrices]
        nrows = sum([e for e in nrows[1:]], nrows[0])
        dtype = matrices[0].dtype
        bu_device_id = device_id if self.dL_dmatrices else None
        output = Matrix.empty(nrows, matrices[0].ncols, dtype, device_id)
        self.output = Connector(output, bu_device_id)

    def fprop(self):
        self.output.assign_vstack(self.context, self.matrices)
        self.output.fprop()

    def bprop(self):
        if self.dL_dmatrices:
            row_slices = []
            nrows = [0]
            for matrix, bpropagable in izip(self.matrices, self.bpropagable):
                nrows.append(nrows[-1] + int(matrix.nrows))
                if bpropagable:
                    row_slices.append((nrows[-2], nrows[-1]))
            self.output.backward_matrix.vsplit(self.context, self.dL_dmatrices, row_slices)
开发者ID:Sandy4321,项目名称:quagga,代码行数:49,代码来源:VerticalStackBlock.py


注:本文中的quagga.connector.Connector.assign_vstack方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。