• Citations Per Year
Learn More
The traditional independent component analysis (ICA) approach aims to separate all underlying independent components (original sources) from their mixtures simultaneously. Through introducing specific prior information about a source signal, an improved ICA algorithm is derived in this paper. One can extract a desired source signal while its normalized(More)
In the present paper, the effects of signal-to-noise ratios (SNRs) on the measurement of 19 atomic Lick indices are analyzed. The stellar spectra of the large sky area multi-object fiber spectroscopic telescope (LAMOST) are selected under different conditions, which allows investigating the impact of SNRs on the accuracy and precision of the measurement of(More)
Independent component analysis (ICA) is a promising statistical signal processing technique. To overcome the inherent drawbacks encountered in the conventional ICA method, a general framework of constrained ICA is introduced. The prior knowledge of reference is incorporated into a negentropy based objective function so as to construct a constrained ICA(More)
This paper mainly introduces the principle and method of the search engine, it also gives the design and implementation of the multi-thread concurrent spider based on the local network. This spider adopts the BloomFilter to solve the URL duplicate and thread pool to manage the concurrent threads; it uses the IoC technique in Spring to provide the support of(More)
Computability logic (CoL) is a formal theory of interactive computation. It understands computational problems as games played by two players: a machine and its environment, uses logical formalism to describe valid principles of computability and formulas to represent computational problems. Logic CL1 is a deductive system for a fragment of CoL. The logical(More)
Blind signal extraction is particularly attractive to solve signal mixture problems while only one or a few source signals are desired. Many desired biomedical signals exhibit distinct periods. A sequential method based on second order statistics is introduced in this paper. One can choose to recover one source signal or all signals in a specific order. The(More)
The Sloan Digital Sky Survey (SDSS) has released the latest data (DR13) which is the first data release for the MaNGA survey. The massive spectra produced by SDSS is available for large sample research and also data source of rare and special objects like white dwarf main-sequence star (WDMS). Many techniques have been proposed to solve SDSS automatic(More)
  • 1