Class information for:
Level 1: NFFT//SPARSE FOURIER RECONSTRUCTION//NONUNIFORM FAST FOURIER TRANSFORM

Basic class information

Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes

The table includes all classes above and classes immediately below the current class.



Cluster id Level Cluster label #P
14 4 MATHEMATICS//MATHEMATICS, APPLIED//MATH 912822
89 3       MATHEMATICS, APPLIED//LINEAR ALGEBRA AND ITS APPLICATIONS//SIAM JOURNAL ON NUMERICAL ANALYSIS 80538
2167 2             SPHERICAL DESIGNS//PROLATE SPHEROIDAL WAVE FUNCTIONS//SPECTRAL METHODS 5287
28651 1                   NFFT//SPARSE FOURIER RECONSTRUCTION//NONUNIFORM FAST FOURIER TRANSFORM 221

Terms with highest relevance score



rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 NFFT authKW 436736 3% 44% 7
2 SPARSE FOURIER RECONSTRUCTION authKW 427830 1% 100% 3
3 NONUNIFORM FAST FOURIER TRANSFORM authKW 332748 3% 33% 7
4 APPROXIMATE PRONY METHOD authKW 320871 1% 75% 3
5 PRONY LIKE METHOD authKW 320871 1% 75% 3
6 FAST FOURIER TRANSFORM FOR NONEQUISPACED DATA authKW 285220 1% 100% 2
7 GAUSSIAN BELLS authKW 285220 1% 100% 2
8 MATRIX PENCIL FACTORIZATION authKW 285220 1% 100% 2
9 NONEQUISPACED GRIDS authKW 285220 1% 100% 2
10 PERTURBED RECTANGULAR HANKEL MATRIX authKW 285220 1% 100% 2

Web of Science journal categories



chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Mathematics, Applied 2868 45% 0% 100
2 Engineering, Electrical & Electronic 361 25% 0% 56
3 Physics, Mathematical 358 12% 0% 26
4 Mathematics 105 11% 0% 24
5 Imaging Science & Photographic Technology 97 3% 0% 7
6 Telecommunications 85 6% 0% 13
7 Computer Science, Interdisciplinary Applications 70 5% 0% 12
8 Instruments & Instrumentation 57 6% 0% 13
9 Computer Science, Theory & Methods 55 5% 0% 11
10 COMPUTER APPLICATIONS & CYBERNETICS 52 0% 0% 1

Address terms



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 AIT GRP 142610 0% 100% 1
2 ENGN TECHNOL SHANXI PROV OPT INFORMAT 142610 0% 100% 1
3 FUNDAMENTAL PL PHYS ELECT SYST 142610 0% 100% 1
4 IFR MATH M3 142610 0% 100% 1
5 PAINLEVE UMR 8524 ANO EDP 142610 0% 100% 1
6 SEAMANS ENGN ARTS SCI 3314 142610 0% 100% 1
7 SLS XRAY TOMOG GRP 142610 0% 100% 1
8 NUMER PL MATH 31293 3% 4% 6
9 COMPUTAT ELE OMAGNET ELE OMAGNET 20371 0% 14% 1
10 MATH SCI PL MATH 20371 0% 14% 1

Journals



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 APPLIED AND COMPUTATIONAL HARMONIC ANALYSIS 26459 6% 1% 13
2 SIAM JOURNAL ON SCIENTIFIC COMPUTING 8978 7% 0% 15
3 REVISTA DE INFORMATICA Y AUTOMATICA 3032 0% 2% 1
4 MOSCOW UNIVERSITY PHYSICS BULLETIN 2735 2% 0% 4
5 ELECTRONIC TRANSACTIONS ON NUMERICAL ANALYSIS 2254 1% 1% 3
6 ADVANCES IN COMPUTATIONAL MATHEMATICS 2226 1% 1% 3
7 NUMERICAL ALGORITHMS 1892 2% 0% 5
8 PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER 1876 3% 0% 6
9 COMPUTERS & MATHEMATICS WITH APPLICATIONS-PART B 1826 0% 1% 1
10 CALCOLO 1679 1% 1% 2

Author Key Words



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 NFFT 436736 3% 44% 7 Search NFFT Search NFFT
2 SPARSE FOURIER RECONSTRUCTION 427830 1% 100% 3 Search SPARSE+FOURIER+RECONSTRUCTION Search SPARSE+FOURIER+RECONSTRUCTION
3 NONUNIFORM FAST FOURIER TRANSFORM 332748 3% 33% 7 Search NONUNIFORM+FAST+FOURIER+TRANSFORM Search NONUNIFORM+FAST+FOURIER+TRANSFORM
4 APPROXIMATE PRONY METHOD 320871 1% 75% 3 Search APPROXIMATE+PRONY+METHOD Search APPROXIMATE+PRONY+METHOD
5 PRONY LIKE METHOD 320871 1% 75% 3 Search PRONY+LIKE+METHOD Search PRONY+LIKE+METHOD
6 FAST FOURIER TRANSFORM FOR NONEQUISPACED DATA 285220 1% 100% 2 Search FAST+FOURIER+TRANSFORM+FOR+NONEQUISPACED+DATA Search FAST+FOURIER+TRANSFORM+FOR+NONEQUISPACED+DATA
7 GAUSSIAN BELLS 285220 1% 100% 2 Search GAUSSIAN+BELLS Search GAUSSIAN+BELLS
8 MATRIX PENCIL FACTORIZATION 285220 1% 100% 2 Search MATRIX+PENCIL+FACTORIZATION Search MATRIX+PENCIL+FACTORIZATION
9 NONEQUISPACED GRIDS 285220 1% 100% 2 Search NONEQUISPACED+GRIDS Search NONEQUISPACED+GRIDS
10 PERTURBED RECTANGULAR HANKEL MATRIX 285220 1% 100% 2 Search PERTURBED+RECTANGULAR+HANKEL+MATRIX Search PERTURBED+RECTANGULAR+HANKEL+MATRIX

Core articles

The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1



rank cluster_id2 link
1 20067 GIBBS PHENOMENON//FOURIER EXTENSION//FOURIER DATA
2 12004 FAST MULTIPOLE METHOD//HIERARCHICAL MATRICES//DATA SPARSE APPROXIMATION
3 38740 SIMPLE PARTIAL FRACTION//CHAIR FUNCT ANAL ITS PLICAT//RESTRICTION ON THE POLES
4 34395 LDCSEE//LCSEE//XRAY PHYS IMAGING
5 11255 AVERAGE SAMPLING//SAMPLING THEOREM//GENERALIZED SAMPLING
6 27756 PROLATE SPHEROIDAL WAVE FUNCTIONS//CIRCULAR PROLATE SPHEROIDAL WAVE FUNCTIONS//EQUIPE RADIOELECT
7 20943 OSCILLATORY INTEGRALS//PL MATH SOFTWARE//FILON TYPE METHOD
8 21613 GEOMATH GRP//GRAPH SIGNAL PROCESSING//SPHERICAL RANDOM FIELDS
9 1848 PARALLEL IMAGING//MAGNETIC RESONANCE IN MEDICINE//GRAPPA
10 18863 MILLIMETER WAVE IMAGING//GLOW DISCHARGE DETECTOR GDD//AREA SIGNAL THEORY COMMUN

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