search for: underpopul

Displaying 2 results from an estimated 2 matches for "underpopul".

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2010 Apr 16
0
Removing empty (or very underpopulated) sub-populations
...(numeric variable), 2) group is grouping variable (factor), 4) normality is a function which takes one variable as argument, and the tries to figure out wheter it's normal (TRUE) or not (FALSE). My problem is that sometimes, some combinations of response~group produce empty populations or very underpopulated (eg. situation when you examine relation between country of origin and age of respondents, and it turns out, that you have only one guy from some country). It causes a failure of my function. I've been wondering wheter there is some way to exclude those underpopulated groups from analysis?...
2015 Feb 26
2
Vorbis I spec errata: single entry codebooks
...single-entry codebook may be either a fully populated codebook with only one declared entry, or a sparse codebook with only one entry marked used. The Vorbis I spec provides no means to specify a codeword length of zero, and as a result, a single-entry codebook is inherently malformed because it is underpopulated. The original specification did not address directly the matter of single-entry codebooks; they were implicitly illegal as it was not possible to write such a codebook with a valid tree structure. In r14811 of the libvorbis reference implementation, Xiph added an additional check to the codebo...