We study a regression problem where for some part of the data we observe both label variable (Y) and predictors (X), while other only are given. Such arises, example, when observations costly may require skilled human agent. When conditional expectation E[Y|X] is not exactly linear, one can consider best linear approximation to expectation, which be estimated consistently by least-square estima...

Loans are the largest source of income from banks compared to other sources income. To ensure bank continuity, Bank must exist interest on loans, reaching almost 95% all activities. For companies and that apply loan differences, loans receivables which cash is delayed in receipt. Having problem can weaken a bank's financial condition. In general, two factors cause problems with namely internal ...