Class information for:
Level 2: FRACTIONAL FOURIER TRANSFORM//FAULT DIAGNOSIS//MECHANICAL SYSTEMS AND SIGNAL PROCESSING

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
359 1                   FAULT DIAGNOSIS//MECHANICAL SYSTEMS AND SIGNAL PROCESSING//ROLLING ELEMENT BEARING 3609
5529 1                   POLYNOMIAL PHASE SIGNALS//INSTANTANEOUS FREQUENCY//TIME FREQUENCY ANALYSIS 1641
9173 1                   OPTICAL ENCRYPTION//OPTICAL IMAGE ENCRYPTION//DOUBLE RANDOM PHASE ENCODING 1211
10227 1                   FRACTIONAL FOURIER TRANSFORM//LINEAR CANONICAL TRANSFORM//DISCRETE FRACTIONAL FOURIER TRANSFORM 1112
26401 1                   CLIFFORD FOURIER TRANSFORM//QUATERNION FOURIER TRANSFORM//QUATERNIONIC FOURIER TRANSFORM 277
29331 1                   MONO COMPONENT//BEDROSIAN IDENTITY//RATIONAL ORTHOGONAL SYSTEM 206
34926 1                   BANKNOTE RECOGNITION//PAPER CURRENCY RECOGNITION//COUNTERFEIT COINS 119

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FRACTIONAL FOURIER TRANSFORM authKW 1033311 4% 74% 364
2 FAULT DIAGNOSIS authKW 523830 9% 19% 701
3 MECHANICAL SYSTEMS AND SIGNAL PROCESSING journal 519918 9% 19% 728
4 OPTICAL ENCRYPTION authKW 353499 1% 92% 100
5 INSTANTANEOUS FREQUENCY authKW 335105 2% 49% 176
6 ROLLING ELEMENT BEARING authKW 328534 2% 49% 175
7 LINEAR CANONICAL TRANSFORM authKW 298253 1% 93% 83
8 TIME FREQUENCY ANALYSIS authKW 225973 3% 21% 286
9 EMPIRICAL MODE DECOMPOSITION authKW 224526 3% 26% 221
10 CONDITION MONITORING authKW 220417 3% 20% 286

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Engineering, Mechanical 43134 24% 1% 1954
2 Optics 19924 21% 0% 1753
3 Acoustics 14369 8% 1% 669
4 Engineering, Electrical & Electronic 14211 26% 0% 2130
5 Engineering, General 4687 6% 0% 512
6 Instruments & Instrumentation 3797 8% 0% 618
7 Mechanics 2779 7% 0% 603
8 Computer Science, Artificial Intelligence 2025 5% 0% 387
9 Materials Science, Characterization, Testing 1308 2% 0% 142
10 Automation & Control Systems 930 3% 0% 215

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 GRP OPT FOTON 88770 0% 59% 39
2 UID OPTIMO 77245 0% 53% 38
3 ELEKTROTEHN FAK 59273 0% 77% 20
4 STATE MFG SYST ENGN 51058 2% 8% 161
5 SMART ENGN ASSET MANAGEMENT SEAM 49316 0% 80% 16
6 DIAGNOST VIBROACOUST SCI 47200 0% 88% 14
7 MACHINE DESIGN CONTROL SYST SECT 39399 0% 68% 15
8 AUTOMAT MEASUREMENT CONTROL ENGN 31676 0% 34% 24
9 CROUCHER OPT NONDESTRUCT TESTING QUAL INSPECT L 31210 0% 90% 9
10 PRECIS MACHINERY PRECIS RUMENTAT 26831 1% 12% 59

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 MECHANICAL SYSTEMS AND SIGNAL PROCESSING 519918 9% 19% 728
2 IEEE TRANSACTIONS ON SIGNAL PROCESSING 57678 5% 4% 392
3 SIGNAL PROCESSING 56508 4% 5% 313
4 JOURNAL OF VIBROENGINEERING 35291 2% 6% 143
5 SHOCK AND VIBRATION 31794 2% 7% 126
6 MEASUREMENT 23874 2% 4% 166
7 OPTICS COMMUNICATIONS 17784 4% 1% 354
8 IEEE SIGNAL PROCESSING LETTERS 16680 2% 3% 142
9 ADVANCES IN APPLIED CLIFFORD ALGEBRAS 13691 1% 7% 51
10 OPTICS AND LASERS IN ENGINEERING 13465 1% 3% 112

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 FRACTIONAL FOURIER TRANSFORM 1033311 4% 74% 364 Search FRACTIONAL+FOURIER+TRANSFORM Search FRACTIONAL+FOURIER+TRANSFORM
2 FAULT DIAGNOSIS 523830 9% 19% 701 Search FAULT+DIAGNOSIS Search FAULT+DIAGNOSIS
3 OPTICAL ENCRYPTION 353499 1% 92% 100 Search OPTICAL+ENCRYPTION Search OPTICAL+ENCRYPTION
4 INSTANTANEOUS FREQUENCY 335105 2% 49% 176 Search INSTANTANEOUS+FREQUENCY Search INSTANTANEOUS+FREQUENCY
5 ROLLING ELEMENT BEARING 328534 2% 49% 175 Search ROLLING+ELEMENT+BEARING Search ROLLING+ELEMENT+BEARING
6 LINEAR CANONICAL TRANSFORM 298253 1% 93% 83 Search LINEAR+CANONICAL+TRANSFORM Search LINEAR+CANONICAL+TRANSFORM
7 TIME FREQUENCY ANALYSIS 225973 3% 21% 286 Search TIME+FREQUENCY+ANALYSIS Search TIME+FREQUENCY+ANALYSIS
8 EMPIRICAL MODE DECOMPOSITION 224526 3% 26% 221 Search EMPIRICAL+MODE+DECOMPOSITION Search EMPIRICAL+MODE+DECOMPOSITION
9 CONDITION MONITORING 220417 3% 20% 286 Search CONDITION+MONITORING Search CONDITION+MONITORING
10 ROTATING MACHINERY 214462 1% 53% 105 Search ROTATING+MACHINERY Search ROTATING+MACHINERY

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 2


rank cluster_id2 link
1 2651 GEAR//TRANSMISSION ERROR//MESH STIFFNESS
2 1803 MINIMAL REPAIR//IEEE TRANSACTIONS ON RELIABILITY//PREVENTIVE MAINTENANCE
3 1023 DAMAGE DETECTION//STRUCTURAL HEALTH MONITORING//DAMAGE IDENTIFICATION
4 584 DIGITAL HOLOGRAPHY//APPLIED OPTICS//OPTICS
5 1761 APPLIED AND COMPUTATIONAL HARMONIC ANALYSIS//FRAMES//GABOR FRAMES
6 937 IET RADAR SONAR AND NAVIGATION//RADAR SIGNAL PROC//SYNTHETIC APERTURE RADAR SAR
7 2365 BLIND SOURCE SEPARATION//BLIND SOURCE SEPARATION BSS//NONNEGATIVE MATRIX FACTORIZATION
8 2593 DATA RECONCILIATION//SOFT SENSOR//PROCESS MONITORING
9 3544 METALURGIJA//ACTA MONTANISTICA SLOVACA//MIN ECOL PROC CONTROL GEOTECHNOL
10 1651 STEGANOGRAPHY//WATERMARKING//DIGITAL WATERMARKING

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