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expected values
期望值:在概率论和统计学中
常用释义
词性释义
期望值:在概率论和统计学中,一个离散性随机变量的期望值(或数学期望,亦简称期望,物理学中称为期待值)是试验中每次可能的结果乘以其结果概率的总和。期望值像是随机试验在同样的机会下重复多次,所有那些可能状态平均的结果,便基本上等同“期望值”所期望的数。期望值可能与每一个结果都不相等。换句话说,期望值是该变量输出值的加权平均。期望值并不一定包含于其分布值域,也并不一定等于值域平均值。
例句
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Then,
the
number
of
the
least
sensor
nodes
could be figured
out
in
different
coverage
regions
by
using
expected
values
of
probability
.
其次对不同的覆盖区域利用概率期望值及相应定理求出满足覆盖条件下最少传感器节点数。
To keep a
brand
fresh
and
with highly
expected
values
all the time
,
it
has
to
be
an
emotional
resonance
with the
brand
interdependently
.
永保品牌新鲜值、期望值,与品牌依存产生情感共鸣,无须行销而行销如影随形。
By trying to
add
a
colon
,
the
fields
will
be adjusted, and
all
expected
values
would
shift
to the
right
.
添加冒号就会影响对字段位置的解释,所有期望值会向右移。
Equal
or
contain
verification
points
enable
you
to
directly
compare
the
XML
document
that the
Web
service
returns
to the
expected
values
.
Equal或contain验证点使您能够直接把Web服务返回的XML文档与期望值作比较。
The
self-correcting
gain
parameters
depend
on
expected
values
of the
overshoot
,
steady
-
state
error
and
dynamic
velocity
-
drop
for the
system
.
自校正增益参数是根据系统对超调量、转速稳态误差、动态速降的期望值来确定的。
Expectations
,
or
expected
values
,
are
simply
probabilistic
averages
of
random
variables
(
or
functions of
variables
)in an
experiment
.
期望,或者期望值,就是实验中随机变量的可能平均值。
The
error
message
should
describe
the
expected
values
of
the
parameter
that
causes
this
exception
.
错误信息应描述导致此异常的参数所需要的值。
Mock
objects
are
used
to
verify
that the
expected
values
are
being
generated
.
模拟对象用于验证预期值正在生成。
After
importing
,
these
should
be
adjusted
in
the
template
to
better
match
expected
values
for the
process
you
are
importing
.
在导入之后,应该在模板中调整这些任务,来更好地匹配您正导入的过程的期望值。
When
the
actual
status
deviates
significantly
from
the
expected
values
,
corrective
actions
are
taken
as
appropriate
.
当实际状态明显偏离预期效果时,就需要采取适当的纠正行动了。