Saturday, February 8, 2014

Subordinating conjunctions

Cause or 
Effect
ConcessionConditionComparison 
or Contrast
PurposeSpace or Time
as 
because 
since
though 
although 
even though 
even if
if 
since 
unless 
when 
whenever
while 
as 
rather than
in order that 
so that
before 
since 
once 
after 
while 
when 
until

Adverbial conjunctions

AdditionEmphasisComparison
or Contrast
Cause or
Effect
Time
in addition
furthermore
moreover
further
in fact
indeed
however
nevertheless
nonetheless
otherwise
in contrast
in comparison
as a result
consequently
hence
therefore
thus
finally
meanwhile
next

PREPOSITIONS

about
along
behind
beyond
during
inside
off
over
to
up
above
among
below
but
except
into
on
since
toward
upon
across
around
beneath
by
for
like
onto
through
under
with
after
at
beside
despite
from
near
out
throughout
underneath
within
against
before
between
down
in
of
outside
till
until
without

Saturday, November 24, 2012

梯度下降 for NN (1)

梯度下降的 6 种变形:

  • Back propagation
  • delta-bar-delta (adaptive learning rate)
  • steepest descent
  • QuickProp
  • Gauss-Newton
  • Levenberg-Marquardt

梯度下降 for NN (2)


  1. find the slope of the error surface
  2. how much to go down the error surface
  3. how the weights should be adjusted after each iteration
  4. when to stop training and what governs the decision
  5. whether the solution is suboptimal
  6. how good the final model is and how to assess its goodness of fit

Friday, November 23, 2012

《群体智能与仿生计算》阅读笔记(1)

偶然从图书馆看到这本书。还没有深入读,先把讲授的主要算法列出:

  • 演化算法 Evolutionary Algorithm
  • 人工免疫算法 Artificial Immune Algorithm
  • 混合遗传算法、遗传局部优化 Memetic Algorithm
  • 粒子群算法 Particle Swarm Optimization
  • 混合蛙跳算法 Shuffled Frog Leaping Algorithm
  • 猫群算法 Cat Swarm Optimization
  • 细菌觅食算法 Bacterial Foraging Optimization
  • 蚁群算法 Ant Colony Algorithm
  • 人工蜂群算法 Artificial Bee Colony Algorithm

Saturday, November 17, 2012

GPU存储器结构的演变

《大规模并行编程实战》 12.2节 读书笔记


  • 大型虚拟和物理地址空间
  • 统一的设备地址空间
  • 可配置的缓存和暂存空间
  • 提高原子操作的速度
  • 提高全局存储器的访问速度

Reference

Gelado, I. et al, An asymmetric distributed shared memory model for heterogeneous parallel systems.