PMI Matrix Creation System
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A PMI Matrix Creation System is a matrix creation system (that applies a PMI Matrix Creation Algorithm to solve a PMI Matrix Creation Task.
- Example(s):
- See: tf-idf Matrix Creation System.
References
2010
- http://www.mathworks.com/matlabcentral/fileexchange/30914-entropy-triangle/content//entropy_triangle_2_0/@uint32/pmi.m
- QUOTE: From a count matrix, N, describing the occurrence of joint events of two different phenomena, this obtains the pointwise mutual information (I) in bits of those events, which is the logarithm (base 2) of the quotiens of the joint probability by the marginals.
The MLE of the joint probability distribution [Pxy] can also be requested
The weighted pointwise mutual information (WI) can be easily calculated from these, as well as other statistics. Remember that [math]\displaystyle{ 0 * log 0 = 0 }[/math] by convention.
- QUOTE: From a count matrix, N, describing the occurrence of joint events of two different phenomena, this obtains the pointwise mutual information (I) in bits of those events, which is the logarithm (base 2) of the quotiens of the joint probability by the marginals.