PriitJ – 24. märts 2021, kell 08:28

2021-03-24T08:28:45Z

←Vanem redaktsioon		Redaktsioon: 24. märts 2021, kell 10:28
39. rida:		39. rida:
	P = P_qe / P_e		P = P_qe / P_e
	</pre>		</pre>

			[[Category:Iti0210]]

PriitJ: Uus lehekülg: '

 import csv from collections import defaultdict  counts = defaultdict(int) with open("somerville.txt") as f:     rd = csv.reader(f, delimiter=",")     print(next(rd))     fo...'

2021-03-24T08:25:49Z

Uus lehekülg: '<pre> import csv from collections import defaultdict counts = defaultdict(int) with open("somerville.txt") as f: rd = csv.reader(f, delimiter=",") print(next(rd)) fo...'

Uus lehekülg

<pre>
import csv
from collections import defaultdict

counts = defaultdict(int)
with open("somerville.txt") as f:
rd = csv.reader(f, delimiter=",")
print(next(rd))
for r in rd:
counts[tuple(r)] += 1

# ['happiness', 'house_price', 'school_quality', 'road_quality']

N = sum(counts.values())
jpd = {}
for happiness in ["happy" , "unhappy"]:
for house_price in ["low", "ok", "high"]:
for school_quality in ["low", "ok", "high"]:
for road_quality in ["low", "ok", "high"]:
p = counts[(happiness,house_price,school_quality,road_quality)]/N
jpd[(happiness,house_price,school_quality,road_quality)] = p

# e: road_quality = low
# q: happiness = happy
# hidden variables h: [house_price, school_quality]

P_e = 0
for happiness in ["happy" , "unhappy"]:
for house_price in ["low", "ok", "high"]:
for school_quality in ["low", "ok", "high"]:
P_e += jpd[(happiness,house_price,school_quality,"low")]

P_qe = 0
for house_price in ["low", "ok", "high"]:
for school_quality in ["low", "ok", "high"]:
P_qe += jpd[("happy",house_price,school_quality,"low")]

# P(happy|road_quality=low)
P = P_qe / P_e
</pre>

Iti0210w9tut - Redigeerimiste ajalugu

PriitJ – 24. märts 2021, kell 08:28

PriitJ: Uus lehekülg: '
import csv from collections import defaultdict counts = defaultdict(int) with open("somerville.txt") as f: rd = csv.reader(f, delimiter=",") print(next(rd)) fo...'