Small but strong
نویسندگان
چکیده
منابع مشابه
Small strong epsilon nets
Let P be a set of n points in R. A point x is said to be a centerpoint of P if x is contained in every convex object that contains more than dn d+1 points of P . We call a point x a strong centerpoint for a family of objects C if x ∈ P is contained in every object C ∈ C that contains more than a constant fraction of points of P . A strong centerpoint does not exist even for halfspaces in R. We ...
متن کاملSmall minerals make strong bones
Small minerals make strong bones Selectins with a catch ot content simply with a good fit, evolution has apparently designed adhesion molecules that stick optimally only when tugged upon. This property, may stop leukocytes and platelets from lingering in stagnant backwaters in the blood where there is little or no flow. Blood is a medium dominated by flow and shear forces. " If you think flow i...
متن کاملIndestructible strong compactness but not supercompactness
Starting from a supercompact cardinal κ, we force and construct a model in which κ is both the least strongly compact and least supercompact cardinal and κ’s strong compactness, but not its supercompactness, is indestructible under arbitrary κ-directed closed forcing.
متن کاملSome Improved Bounds on Small Strong -Nets
In this paper we present some new constructions of small strong -nets for rectangles, strips and wedges based on simple geometric arguments. For rectangular range spaces we improve upon the earlier known bound on for net set size of 2. For strips and wedges for which only lower bounds were known, we bound from above for net set sizes of 2, 3 and 4. Further, we show that the net constructed for ...
متن کاملStrong Feature Sets from Small Samples
For small samples, classifier design algorithms typically suffer from overfitting. Given a set of features, a classifier must be designed and its error estimated. For small samples, an error estimator may be unbiased but, owing to a large variance, often give very optimistic estimates. This paper proposes mitigating the small-sample problem by designing classifiers from a probability distributi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Catalysis
سال: 2020
ISSN: 2520-1158
DOI: 10.1038/s41929-020-0449-6