32. Entity disambiguation
This is important.
Company disambiguation is a very common
problem – Are “Microsoft”, “Microsoft
Corporation”, and “MS” the same
company?
41. Example
• Population of 10,000
• 1% have rare disease
• There’s a test that is 99% effective.
– 99% of sick patients test positive
– 99% of healthy patients test negative
42. Given a positive test result, what is the probability
that the patient is sick?
43.
44. Disease Diagnosis
99 sick patients test positive, 99 healthy
patients test positive
Given a positive test, there is a 50%
probability that the patient is sick.
45. Bayesian Disease
Know the prob. of testing sick given healthy,
and healthy given sick
Use Bayes theorem to invert probabilities