Humdrum Representation for Statistical Correlations¶
**correl – statistical correlation representation
The **correl representation is used to characterize the degree of statistical correlation for successive moments. Data tokens for **correl decimal values ranging between -1 (perfect negative correlation) and 1 (perfect positive correlation).
It is recommended that files containing predominantly **correl data should be given names with the distinguishing `.cor’ extension.
The following table summarizes the **correl mappings of signifiers and signifieds.
0-9 correlation values specified as integer or real value . decimal point; null token
plus sign (optional)
Summary of ***correl** Signifiers*
A sample document is given below:
**correl *C: *M4/4 . 0.0 +0.3037 +.52 0.6 0.211 . -.241 -0.17 -1 0.221 . *-
Notice that melodic accent values can be either real or integer values. Rests are represented by the single letter `r’.
The following Humdrum command produces **correl data as output: **correl** calculate numerical correlation between two spines
The following tandem interpretations can be used in conjunction with **correl:
meter signatures *M6/8 key signatures *k[f#c#] key *c#:
Tandem interpretations for ***correl***
`` barlines, correl, **simil, simil``