本文整理匯總了Python中cntk.less方法的典型用法代碼示例。如果您正苦於以下問題：Python cntk.less方法的具體用法？Python cntk.less怎麽用？Python cntk.less使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類cntk的用法示例。
在下文中一共展示了cntk.less方法的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: SmoothL1Loss
# 需要導入模塊: import cntk [as 別名]
# 或者: from cntk import less [as 別名]
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) 示例2: switch
# 需要導入模塊: import cntk [as 別名]
# 或者: from cntk import less [as 別名]
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) 示例3: switch
# 需要導入模塊: import cntk [as 別名]
# 或者: from cntk import less [as 別名]
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) 示例4: less
# 需要導入模塊: import cntk [as 別名]
# 或者: from cntk import less [as 別名]
def less(x, y):
return C.less(x, y)