How does p(catch,toothache,cavity) have 7 entries.... why is he subtracting that 1 ? He did something similar to say he reduced 32 to 10 instead of 12 by subtracting 1 from p(catch,toothache,cavity) and 1 from p(weather). What exactly does he mean by parameters ?
Clear and simple, thanks.
How does p(catch,toothache,cavity) have 7 entries.... why is he subtracting that 1 ?
He did something similar to say he reduced 32 to 10 instead of 12 by subtracting 1 from p(catch,toothache,cavity) and 1 from p(weather). What exactly does he mean by parameters ?
Sum of all probabilities is 1. So if we know 7 parameters, the last one is simply 1 minus the sum of seven.
How values of join prob
Becomes 32 here ..pls help me to calculate.
By Multiplying:
Weather has 4 values and toothache, cache , cavity has 2 values each (i.e. true or false)
Therefore
4×2×2×2=32
@@KnowledgeofEverything How the weather has 4 values?
@@rajat_enzyme Its mentioned in the previous video.
@@rajat_enzyme watch previous video weather is 4 (sunny, cloudy, rainy, cold)
What do we exactly mean by the term "parameter"?
Its value of the probability : say P(cavity). How many such values we need to maintain to have overall idea about distribution.