@techreport{oai:ipsj.ixsq.nii.ac.jp:00220255,
 author = {Xiqin, Lu and Nobuo, Funabiki and Zhikang, Li and Kiyoshi, Ueda and Xiqin, Lu and Nobuo, Funabiki and Zhikang, Li and Kiyoshi, Ueda},
 issue = {3},
 month = {Sep},
 note = {Currently, we are studying the phrase fill-in-blank problem (PFP) in C programming learning assistant system (CPLAS) for code reading & writing self-studies of novice students. In a PFP instance, key phrases (sets of multiple elements) are blanked in a given source code to be filled in by students. Any answer from a student is automatically marked through string matching at the system. However, some blanks can have grammatically correct alternative answers besides the original phrases in the source code. Previously, they were manually found, which caused additional loads and mistakes. In this paper, we propose an alternative answer search method to find alternative answers for blanks in a PFP instance, if exist. Seven phrase patterns for possible alternative answers in C programming are listed up. Using regular expressions, their matching phrases are found among the blanks. For evaluations, we apply the proposal to 37 source codes in previous PFP instances, and confirm the conformity of the alternative answers in them., Currently, we are studying the phrase fill-in-blank problem (PFP) in C programming learning assistant system (CPLAS) for code reading & writing self-studies of novice students. In a PFP instance, key phrases (sets of multiple elements) are blanked in a given source code to be filled in by students. Any answer from a student is automatically marked through string matching at the system. However, some blanks can have grammatically correct alternative answers besides the original phrases in the source code. Previously, they were manually found, which caused additional loads and mistakes. In this paper, we propose an alternative answer search method to find alternative answers for blanks in a PFP instance, if exist. Seven phrase patterns for possible alternative answers in C programming are listed up. Using regular expressions, their matching phrases are found among the blanks. For evaluations, we apply the proposal to 37 source codes in previous PFP instances, and confirm the conformity of the alternative answers in them.},
 title = {A Proposal of Alternative Answer Search Method for Phrase Fill-in-blank Problems in C programming},
 year = {2022}
}