CTable Class¶

class CTable¶

Represent a contingency table / confusion matrix for a single code.

classmethod add(pri_value, rel_value)¶

Increment the table value at the given combination by one. See compute_kappa() for automatically computing kappa scores.

Parameter	Type	Description
pri_value	String	Value for primary coder.
rel_value	String	Value for reliability coder.

Returns

None.

classmethod ef(idx)¶

Return the expected frequency of agreement by chance for the given index.

Parameter	Type	Description
idx	Integer	Index of code (starting at zero).

classmethod efs()¶

Return the sum of the expected frequency of agreement by chance for all indices in table.

classmethod kappa()¶

Compute kappa using table values.

classmethod total()¶

Return the sum of all elements in table.

classmethod to_s()¶

Return formateed string to display the table.