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Python cntk.less方法代码示例

本文整理汇总了Python中cntk.less方法的典型用法代码示例。如果您正苦于以下问题:Python cntk.less方法的具体用法?Python cntk.less怎么用?Python cntk.less使用的例子?那么恭喜您, 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cntk的用法示例。


在下文中一共展示了cntk.less方法的4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: SmoothL1Loss

# 需要导入模块: import cntk [as 别名]
# 或者: from cntk import less [as 别名]
def SmoothL1Loss(sigma, bbox_pred, bbox_targets, bbox_inside_weights, bbox_outside_weights):
    """
        From https://github.com/smallcorgi/Faster-RCNN_TF/blob/master/lib/fast_rcnn/train.py

        ResultLoss = outside_weights * SmoothL1(inside_weights * (bbox_pred - bbox_targets))
        SmoothL1(x) = 0.5 * (sigma * x)^2,    if |x| < 1 / sigma^2
                        |x| - 0.5 / sigma^2,    otherwise
    """
    sigma2 = sigma * sigma

    inside_mul_abs = C.abs(C.element_times(bbox_inside_weights, C.minus(bbox_pred, bbox_targets)))

    smooth_l1_sign = C.less(inside_mul_abs, 1.0 / sigma2)
    smooth_l1_option1 = C.element_times(C.element_times(inside_mul_abs, inside_mul_abs), 0.5 * sigma2)
    smooth_l1_option2 = C.minus(inside_mul_abs, 0.5 / sigma2)
    smooth_l1_result = C.plus(C.element_times(smooth_l1_option1, smooth_l1_sign),
                              C.element_times(smooth_l1_option2, C.minus(1.0, smooth_l1_sign)))

    return C.element_times(bbox_outside_weights, smooth_l1_result) 
开发者ID:karolzak,项目名称:cntk-python-web-service-on-azure,代码行数:21,代码来源:cntk_smoothL1_loss.py

示例2: switch

# 需要导入模块: import cntk [as 别名]
# 或者: from cntk import less [as 别名]
def switch(condition, then_expression, else_expression):
    ndim_cond = ndim(condition)
    ndim_expr = ndim(then_expression)
    if ndim_cond > ndim_expr:
        raise ValueError('Rank of condition should be less'
                         ' than or equal to rank of then and'
                         ' else expressions. ndim(condition)=' +
                         str(ndim_cond) + ', ndim(then_expression)'
                         '=' + str(ndim_expr))
    elif ndim_cond < ndim_expr:
        shape_expr = int_shape(then_expression)
        ndim_diff = ndim_expr - ndim_cond
        for i in range(ndim_diff):
            condition = expand_dims(condition)
            condition = tile(condition, shape_expr[ndim_cond + i])
    return C.element_select(condition,
                            then_expression,
                            else_expression) 
开发者ID:Relph1119,项目名称:GraphicDesignPatternByPython,代码行数:20,代码来源:cntk_backend.py

示例3: switch

# 需要导入模块: import cntk [as 别名]
# 或者: from cntk import less [as 别名]
def switch(condition, then_expression, else_expression):
    ndim_cond = ndim(condition)
    ndim_expr = ndim(then_expression)
    if ndim_cond > ndim_expr:
        raise ValueError('Rank of condition should be less'
                         ' than or equal to rank of then and'
                         ' else expressions. ndim(condition)=' +
                         str(cond_ndim) + ', ndim(then_expression)'
                         '=' + str(expr_ndim))
    elif ndim_cond < ndim_expr:
        shape_expr = int_shape(then_expression)
        ndim_diff = ndim_expr - ndim_cond
        for i in range(ndim_diff):
            condition = expand_dims(condition)
            condition = tile(condition, shape_expr[ndim_cond + i])
    return C.element_select(condition,
                            then_expression,
                            else_expression) 
开发者ID:sheffieldnlp,项目名称:deepQuest,代码行数:20,代码来源:cntk_backend.py

示例4: less

# 需要导入模块: import cntk [as 别名]
# 或者: from cntk import less [as 别名]
def less(x, y):
    return C.less(x, y) 
开发者ID:Relph1119,项目名称:GraphicDesignPatternByPython,代码行数:4,代码来源:cntk_backend.py


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