txt / mase Goto Github PK

needs to be added to the front page

any comments ? look at "Homework" and "Code1,Code2,Code3,Code4" at http://tiny.cc/mase

needs to be added

can introduce interators as follows

pull from a population

method 1 (see below)

method2 keep a sub-sample of the data, randomly selected

Generate often seen things most often while generating rarer this more rarely.

Given a dictionary d{k1=n1, k2=n2, ...}, return enough keys ki at probability pi = ni/n where n = n1+n2+.. e.g.

for key in some({'box':30,'circle':20,'line':10},20)
     print key

will return around twice as many boxes as anything else, circles 1/3rd of the time and lines 1/6th of the time.

def often(d,enough=10**32):
  n, lst = 0, []
  for x in d: 
    n   += d[x]
    lst += [(d[x],x)]
  lst = sorted(lst, reverse=True)
  while enough > 0:
    r = random.random()
    for freq,thing in lst:
      r -= freq*1.0/n
      if r <= 0:
        yield thing
        enough -= 1
        break

@test
def oftend():
  seed(1)
  return [['box','line',  'circle','box','box', 
           'box','circle','circle','box','box'],
          [x for x in 
           often({'box':30,'circle':20,'line':10},
                 10)]]

the "lets get students to fill in promise" project is specified in https://github.com/txt/mase/blob/master/READING.md

feedback please. still amazed you are willing to do this. the collegiality at this uni.., amazing

fyi, if you want, i could come into your class to brief your students on this

the project has 2 parts

• part2 is a big essay
• part1 has a seed paper then students work backwards exploring reading one prior paper per week for 8 weeks
• the actual "lets add data to promise" exercise is at the end of that sequence. so we dont ask them to do real work that effects promise until after we've trained them in paper reading
• for your subject, you could
  • not do part2
  • don't walk over 8 papers, but over 4

The link for PSO is broken in the ReadMe.md

• PSO
• GALE
• Stats/less than

missing diapers model at end of review questions

in fact, missing lots of stuff at end of review 5... how bizarre