Chenguang Lu

4 Questions 21 Answers 0 Followers

Questions related from Chenguang Lu

Can confirmation measures be useful for diagnosing COVID-19 when both NAT and CT are used?

If NAT(nucleic acid test) shows negative and CT shows positive, which should we believe? Can we calculate their degrees of confirmation to make decision? There are many confirmation measures. Are...

01 January 1970 781 12 View

Did you find there is a new trend in machine learning?

I found there is a new trend in machine learning, especially in deep learning: researchers use similarity function proportional to P(x|yj)/P(x)=P(yj|x)/P(yj) to construct estimated mutual...

01 January 1970 3,815 1 View

Is Q of the EM algorithm non-decreasing?

I found the popular convergence proof of the EM algorithm is wrong because Q may and should decrease in some E steps; P(Y|X) from the E-step is also improper Shannon's channel. For details, see my...

01 January 1970 6,902 3 View

Causal Confirmation: two Different Viewpoints

Two different viewpoints can be found as follows: Confirmation, causation, and simpson's paradox Confirmation, causation, and simpson's paradox Causal Confirmation Measures: From Simpson’s...

01 January 1970 6,709 3 View