title: Explanation of the "virtual input" phenomenon.
abstract: We write this letter to comment on the "virtual input" phenomenon reported by Thaler (Neural Networks, 8(1) (1995) 55-65). The author attributed the phenomenon to the network's ability to perform pattern classification and completion, and reported that pruning probability affects the number of virtual inputs observed. Our independent study of Thaler's results, however, reveals a simpler explanation of the "virtual input" phenomenon.
authors.affiliation: School of Computing, National University of Singapore, 55 Science Drive 2, Singapore, Singapore
authors.forename: Wee Kheng
authors.initials: WK
authors.lastname: Leow
authors.forename: Rudy
authors.initials: R
authors.lastname: Setiono