Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Exploiting hidden structure in selecting dimensions that distinguish vectors. / Froese, Vincent; Van Bevern, René; Niedermeier, Rolf и др.
в: Journal of Computer and System Sciences, Том 82, № 3, 01.01.2016, стр. 521-535.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Exploiting hidden structure in selecting dimensions that distinguish vectors
AU - Froese, Vincent
AU - Van Bevern, René
AU - Niedermeier, Rolf
AU - Sorge, Manuel
PY - 2016/1/1
Y1 - 2016/1/1
N2 - The NP-hard Distinct Vectors problem asks to delete as many columns as possible from a matrix such that all rows in the resulting matrix are still pairwise distinct. Our main result is that, for binary matrices, there is a complexity dichotomy for Distinct Vectors based on the maximum (H) and the minimum (h) pairwise Hamming distance between matrix rows: Distinct Vectors can be solved in polynomial time if H≤2[h/2]+1, and is NP-complete otherwise. Moreover, we explore connections of Distinct Vectors to hitting sets, thereby providing several fixed-parameter tractability and intractability results also for general matrices.
AB - The NP-hard Distinct Vectors problem asks to delete as many columns as possible from a matrix such that all rows in the resulting matrix are still pairwise distinct. Our main result is that, for binary matrices, there is a complexity dichotomy for Distinct Vectors based on the maximum (H) and the minimum (h) pairwise Hamming distance between matrix rows: Distinct Vectors can be solved in polynomial time if H≤2[h/2]+1, and is NP-complete otherwise. Moreover, we explore connections of Distinct Vectors to hitting sets, thereby providing several fixed-parameter tractability and intractability results also for general matrices.
KW - Combinatorial feature selection
KW - Combinatorics of binary matrices
KW - Dimension reduction
KW - Fixed-parameter tractability
KW - Machine learning
KW - Minimal reduct problem
KW - NP-hardness
KW - W-hardness
KW - Δ-Systems
UR - http://www.scopus.com/inward/record.url?scp=84949024355&partnerID=8YFLogxK
U2 - 10.1016/j.jcss.2015.11.011
DO - 10.1016/j.jcss.2015.11.011
M3 - Article
AN - SCOPUS:84949024355
VL - 82
SP - 521
EP - 535
JO - Journal of Computer and System Sciences
JF - Journal of Computer and System Sciences
SN - 0022-0000
IS - 3
ER -
ID: 22339710