Description:  
 COREG is a co-training style semi-supervised regression algorithm, which employs two kNN regressors using different distance metrics to select the most confidently labeled unlabeled examples for each other.
Reference:
 Z.-H. Zhou and M. Li. Semi-supervised regression with co-training style algorithms. IEEE Transactions on Knowledge and Data Engineering, 2007, 19(11): 1479-1493.
ATTN:  
 This package is free for academic usage. You can run it at your own risk. For other purposes, please contact Prof. Zhi-Hua Zhou (zhouzh@nju.edu.cn).
Requirement:
 To use this package, the whole WEKA  environment (ver 3.4) must be available. Refer: I.H. Witten and E. Frank. Data Mining: Practical Machine Learning Tools and Techniques with Java Implementations. Morgan Kaufmann, San Francisco, CA, 2000.
Requirement2:
 To directly use this package, the JAMA package must also be available, unless you can develop the corresponding codes for matrix manipulation at your own risk.
Data format:
 Both the input and output formats are the same as those used by WEKA. 
ATTN2: 
 This package was developed by Mr. Ming Li (lim@lamda.nju.edu.cn). This ReadMe file roughly explains the codes. For any problem concerning the code, please feel free to contact Mr. Li.
Download:     
code (13.5KB)