Principles of Data Science by Unknown

Author:Unknown
Language: eng
Format: epub
ISBN: 9783030439811
Publisher: Springer International Publishing

6.Pearson Correlation Similarity: The Pearson correlation coefficient is used to determine the strength and relationship between two variables. If there is a strong relationship between two variables, then the value is positive one. If there is an opposite relationship between two variables, then the value is negative one. If there is no relationship, then the value is zero:

where ‘δ S’ is the standard deviation of S and ‘δ T’ is the standard deviation of T.

Figure 3 depicts the categorization of the variables used in the problem of missing value imputation. A qualitative and quantitative analysis is needful for correct identification of variable category since the orientation is to tune the propensity predictor attribute.

Fig. 3Variable categorization

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