sparse


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sparse

A sparse matrix (or vector, or array) is one in which most of the elements are zero. If storage space is more important than access speed, it may be preferable to store a sparse matrix as a list of (index, value) pairs or use some kind of hash scheme or associative memory.
References in classic literature ?
In this latter end of autumn, with a sparse remnant of yellow leaves falling slowly athwart the dark evergreens in a stillness without sunshine, the house too had an air of autumnal decline, and Mr.
After a steep climb and a short walk they halted at the edge of a precipitous cliff and Schneider looked down into a narrow gulch where a single tree grew beside a tiny rivulet and sparse grass broke from a rock-strewn soil.
You see," said he, whisking round, and showing one little strip where a line of scattered hairs, like the last survivors in some fatal field, still barely held their own against the fate which had fallen upon their comrades; "these locks need some little oiling and curling, for I doubt not that if you look slantwise at my head, when the light is good, you will yourself perceive that there are places where the hair is sparse.
The Sto-lu men show a sparse beard, the Band-lu none; and there is little hair upon the bodies of their women.
She was hidden from him by the back of her deck-chair; but he had the view of the owner of the thin, aged legs seated on the skylight, his clean-shaved cheek, his thin compressed mouth with a hollow in each corner, the sparse grey locks escaping from under the tweed cap, and curling slightly on the collar of the coat.
A sparse population and want make every man his own valet, cook, butcher and soldier, and the habit of supplying his own needs educates the body to wonderful performances.
Tulliver felt that she ought to be affected, but she was a woman of sparse tears, stout and healthy; she couldn't cry so much as her sister Pullet did, and had often felt her deficiency at funerals.
Late in the afternoon he followed a stream, milky with lime, which ran through sparse patches of rush-grass.
His hair, sparse and unkempt of growth, was as indeterminate and colorless as his complexion.
In recent years, due to the development of the theory of sparse representation, many target detection algorithms based on sparse representation have been also proposed by researchers.
Recent research has demonstrated that sparse coding (or sparse representation) is a powerful image representation model.
Zomato has bought Sparse labs, a 30 months old bootstrapped logistics-tech startup founded by Pankaj Batra, to address an area where it has "immense room for improvement" delivery tracking.