Class information for:
Level 1: FRACTIONAL FOURIER TRANSFORM//LINEAR CANONICAL TRANSFORM//DISCRETE FRACTIONAL 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
12 4 COMPUTER SCIENCE, THEORY & METHODS//COMPUTER SCIENCE, INFORMATION SYSTEMS//COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE 1181119
667 3       FRACTIONAL FOURIER TRANSFORM//FAULT DIAGNOSIS//MECHANICAL SYSTEMS AND SIGNAL PROCESSING 9652
1428 2             FRACTIONAL FOURIER TRANSFORM//FAULT DIAGNOSIS//MECHANICAL SYSTEMS AND SIGNAL PROCESSING 8175
10227 1                   FRACTIONAL FOURIER TRANSFORM//LINEAR CANONICAL TRANSFORM//DISCRETE FRACTIONAL FOURIER TRANSFORM 1112

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FRACTIONAL FOURIER TRANSFORM authKW 4275499 25% 55% 273
2 LINEAR CANONICAL TRANSFORM authKW 2089249 7% 91% 81
3 DISCRETE FRACTIONAL FOURIER TRANSFORM authKW 728757 3% 86% 30
4 LINEAR CANONICAL TRANSFORM LCT authKW 368431 1% 100% 13
5 FRACTIONAL FOURIER TRANSFORM FRFT authKW 366655 3% 45% 29
6 FRFT authKW 268700 1% 59% 16
7 DISCRETE FRACTIONAL FOURIER TRANSFORM DFRFT authKW 229559 1% 90% 9
8 FRACTIONAL HILBERT TRANSFORM authKW 228611 1% 73% 11
9 FRACTIONAL CORRELATION authKW 202429 1% 71% 10
10 CONVOLUTION AND PRODUCT THEOREM authKW 198386 1% 100% 7

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 13495 46% 0% 510
2 Engineering, Electrical & Electronic 3497 34% 0% 378
3 Imaging Science & Photographic Technology 347 3% 0% 30
4 Mathematics, Applied 262 7% 0% 82
5 Telecommunications 231 4% 0% 50
6 Computer Science, Information Systems 58 3% 0% 28
7 Mathematics, Interdisciplinary Applications 42 2% 0% 21
8 Mathematics 36 4% 0% 46
9 Physics, Multidisciplinary 31 4% 0% 47
10 Acoustics 17 1% 0% 12

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ELECT COMMUN ENGN SECT 118085 0% 83% 5
2 ELEKTROTECH 79202 2% 12% 24
3 BEIJING MATH CHARACTERIZAT ANAL PLICA 56682 0% 100% 2
4 LEHRSTUHL MODELLIERUNG SIMULAT 56682 0% 100% 2
5 AUTOMATIZAT 45897 1% 18% 9
6 BEIJING FRACT SIGNALS SYST 42508 0% 50% 3
7 GRP OPT THEOR PL 37786 0% 67% 2
8 UCD COMMUN OPTOELECT 32384 0% 29% 4
9 BIOL MED ELECT 28341 0% 100% 1
10 CEMOS 28341 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION 31836 10% 1% 106
2 SIGNAL PROCESSING 19688 6% 1% 68
3 IEEE TRANSACTIONS ON SIGNAL PROCESSING 18188 7% 1% 81
4 SIGNAL IMAGE AND VIDEO PROCESSING 14385 2% 2% 23
5 IET SIGNAL PROCESSING 12961 2% 2% 20
6 OPTICS COMMUNICATIONS 11747 9% 0% 105
7 IEEE SIGNAL PROCESSING LETTERS 7506 3% 1% 35
8 OPTIK 6968 5% 0% 53
9 JOURNAL OF THE OPTICAL SOCIETY OF AMERICA 4066 1% 1% 11
10 APPLIED OPTICS 3669 6% 0% 69

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 FRACTIONAL FOURIER TRANSFORM 4275499 25% 55% 273 Search FRACTIONAL+FOURIER+TRANSFORM Search FRACTIONAL+FOURIER+TRANSFORM
2 LINEAR CANONICAL TRANSFORM 2089249 7% 91% 81 Search LINEAR+CANONICAL+TRANSFORM Search LINEAR+CANONICAL+TRANSFORM
3 DISCRETE FRACTIONAL FOURIER TRANSFORM 728757 3% 86% 30 Search DISCRETE+FRACTIONAL+FOURIER+TRANSFORM Search DISCRETE+FRACTIONAL+FOURIER+TRANSFORM
4 LINEAR CANONICAL TRANSFORM LCT 368431 1% 100% 13 Search LINEAR+CANONICAL+TRANSFORM+LCT Search LINEAR+CANONICAL+TRANSFORM+LCT
5 FRACTIONAL FOURIER TRANSFORM FRFT 366655 3% 45% 29 Search FRACTIONAL+FOURIER+TRANSFORM+FRFT Search FRACTIONAL+FOURIER+TRANSFORM+FRFT
6 FRFT 268700 1% 59% 16 Search FRFT Search FRFT
7 DISCRETE FRACTIONAL FOURIER TRANSFORM DFRFT 229559 1% 90% 9 Search DISCRETE+FRACTIONAL+FOURIER+TRANSFORM+DFRFT Search DISCRETE+FRACTIONAL+FOURIER+TRANSFORM+DFRFT
8 FRACTIONAL HILBERT TRANSFORM 228611 1% 73% 11 Search FRACTIONAL+HILBERT+TRANSFORM Search FRACTIONAL+HILBERT+TRANSFORM
9 FRACTIONAL CORRELATION 202429 1% 71% 10 Search FRACTIONAL+CORRELATION Search FRACTIONAL+CORRELATION
10 CONVOLUTION AND PRODUCT THEOREM 198386 1% 100% 7 Search CONVOLUTION+AND+PRODUCT+THEOREM Search CONVOLUTION+AND+PRODUCT+THEOREM

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 26401 CLIFFORD FOURIER TRANSFORM//QUATERNION FOURIER TRANSFORM//QUATERNIONIC FOURIER TRANSFORM
2 9173 OPTICAL ENCRYPTION//OPTICAL IMAGE ENCRYPTION//DOUBLE RANDOM PHASE ENCODING
3 5529 POLYNOMIAL PHASE SIGNALS//INSTANTANEOUS FREQUENCY//TIME FREQUENCY ANALYSIS
4 22376 CROSS SPECTRAL DENSITY//MARGINAL POWER SPECTRUM//SPATIAL COHERENCE WAVELETS
5 38138 NONLOCAL LATTICES//NUMERIC PARTIAL DIFFERENTIATION//DISCRETE DIFFERENTIATION
6 8841 IWOP TECHNIQUE//ENTANGLED STATE REPRESENTATION//QUANTUM COMMUN CALCULAT
7 11255 AVERAGE SAMPLING//SAMPLING THEOREM//GENERALIZED SAMPLING
8 803 LASER PHYS CHEM//TURBULENT ATMOSPHERE//VECTORIAL STRUCTURE
9 18802 ULTRADISTRIBUTIONS//HANKEL TRANSFORMATION//HANKEL CONVOLUTION
10 29331 MONO COMPONENT//BEDROSIAN IDENTITY//RATIONAL ORTHOGONAL SYSTEM

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