definition of basic terms for recommender systems
- Preprocessing
transforms the raw input data into an appropriate format for subsequent analysis. - Data mining
the process of automatically discovering useful information in large data repositories. - Regression
predictive model used for continuous target variables. - Attribute
property or characteristic of an object that may vary. - Data cleaning
detectiont and correction of data quality. - Standardization
the process of making an entire set of values have particular property. - Distance(x,x)>=0 : positivity.
- Distance(x,y) = Distance(y,x) : symmetry.
- Distance(z,x) <= Distance(y,z) + Distance(x,y) : triangle inequality.
Classify the following attributes as binary, discrete, or continuous.
Number of students per classroom: discrete.
Bronze, silver, and gold medals as awarded at the olympics: discrete.
Angles as measured in degrees between 0degree and 360degree: continuous.
Time in terms of AM or PM: binary.
저는 서영준 입니다.