Expectation conditional maximization (ECM) ( Maximum Likelihood Parameters)
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Time Complexity
$O(n^{2} \log n)$
Space Complexity
$O(n+r)$? words
(Stores current theta and Z guesses, which is updated each iteration. Also assumes description of log-likelihood takes O(n+r) auxiliary space.)
Description
Approximate?
Exact
Randomized?
No, deterministic
Model of Computation
Real RAM
Year
2017