Class information for:
Level 1: UNKNOWN SOURCE//INVERSE SOURCE PROBLEM//UNKNOWN COEFFICIENTS

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
22 4 AUTOMATION & CONTROL SYSTEMS//ENGINEERING, CIVIL//ACOUSTICS 457813
441 3       INVERSE PROBLEMS//ELECTRICAL IMPEDANCE TOMOGRAPHY//INVERSE SCATTERING 27955
2090 2             ILL POSED PROBLEM//INVERSE PROBLEM//DISCREPANCY PRINCIPLE 5566
11834 1                   UNKNOWN SOURCE//INVERSE SOURCE PROBLEM//UNKNOWN COEFFICIENTS 979

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 UNKNOWN SOURCE authKW 430399 2% 70% 19
2 INVERSE SOURCE PROBLEM authKW 420409 5% 28% 46
3 UNKNOWN COEFFICIENTS authKW 418487 1% 100% 13
4 GRP NUMER ANAL MATH MODELING NAM2 address 340016 1% 81% 13
5 INVERSE PROBLEM authKW 304807 26% 4% 259
6 INTEGRAL OVERDETERMINATION CONDITION authKW 289722 1% 100% 9
7 INVERSE PARABOLIC PROBLEM authKW 247621 1% 77% 10
8 MATH LMI address 228914 1% 89% 8
9 PARABOLIC EQUATION authKW 211667 9% 8% 85
10 OVERSPECIFIED DATA authKW 193148 1% 100% 6

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Mathematics, Applied 21427 58% 0% 571
2 Mathematics 7789 39% 0% 382
3 Mathematics, Interdisciplinary Applications 2036 11% 0% 105
4 Engineering, General 1932 11% 0% 109
5 Physics, Mathematical 1408 11% 0% 109
6 Multidisciplinary Sciences 347 3% 0% 34
7 Mechanics 231 6% 0% 62
8 Thermodynamics 45 2% 0% 23
9 Computer Science, Interdisciplinary Applications 42 2% 0% 24
10 Computer Science, Software Engineering 28 2% 0% 17

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 GRP NUMER ANAL MATH MODELING NAM2 340016 1% 81% 13
2 MATH LMI 228914 1% 89% 8
3 INFORMAT SYST TECHNOL METALURGY 64383 0% 100% 2
4 PL SCI HIGH 64383 0% 100% 2
5 GANSU SYST DYNAM RELIABIL RAILWAY TRANS 64379 0% 50% 4
6 STATE SYNTHETICALLY AUTOMAT PROC IND 42920 0% 67% 2
7 EA 2222 39952 1% 21% 6
8 BERGAKAD FAK MATH INFORMAT 32191 0% 100% 1
9 CHINA DEV BANK 32191 0% 100% 1
10 CIVIL ENGN ARCHIT 32191 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 JOURNAL OF INVERSE AND ILL-POSED PROBLEMS 78802 3% 8% 32
2 INVERSE PROBLEMS IN SCIENCE AND ENGINEERING 65116 4% 5% 42
3 INVERSE PROBLEMS 33939 6% 2% 61
4 DIFFERENTIAL EQUATIONS 26893 6% 1% 57
5 SIBERIAN MATHEMATICAL JOURNAL 11247 3% 1% 33
6 INVERSE PROBLEMS AND IMAGING 5326 1% 2% 9
7 APPLICABLE ANALYSIS 5251 2% 1% 16
8 MATHEMATICAL METHODS IN THE APPLIED SCIENCES 5013 3% 1% 25
9 APPLIED MATHEMATICS AND COMPUTATION 3608 5% 0% 45
10 ZEITSCHRIFT FUR ANALYSIS UND IHRE ANWENDUNGEN 3478 1% 1% 9

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 UNKNOWN SOURCE 430399 2% 70% 19 Search UNKNOWN+SOURCE Search UNKNOWN+SOURCE
2 INVERSE SOURCE PROBLEM 420409 5% 28% 46 Search INVERSE+SOURCE+PROBLEM Search INVERSE+SOURCE+PROBLEM
3 UNKNOWN COEFFICIENTS 418487 1% 100% 13 Search UNKNOWN+COEFFICIENTS Search UNKNOWN+COEFFICIENTS
4 INVERSE PROBLEM 304807 26% 4% 259 Search INVERSE+PROBLEM Search INVERSE+PROBLEM
5 INTEGRAL OVERDETERMINATION CONDITION 289722 1% 100% 9 Search INTEGRAL+OVERDETERMINATION+CONDITION Search INTEGRAL+OVERDETERMINATION+CONDITION
6 INVERSE PARABOLIC PROBLEM 247621 1% 77% 10 Search INVERSE+PARABOLIC+PROBLEM Search INVERSE+PARABOLIC+PROBLEM
7 PARABOLIC EQUATION 211667 9% 8% 85 Search PARABOLIC+EQUATION Search PARABOLIC+EQUATION
8 OVERSPECIFIED DATA 193148 1% 100% 6 Search OVERSPECIFIED+DATA Search OVERSPECIFIED+DATA
9 PARABOLIC INVERSE PROBLEM 175261 1% 78% 7 Search PARABOLIC+INVERSE+PROBLEM Search PARABOLIC+INVERSE+PROBLEM
10 IDENTIFICATION PROBLEMS 168423 2% 35% 15 Search IDENTIFICATION+PROBLEMS Search IDENTIFICATION+PROBLEMS

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 13515 ILL POSED PROBLEM//DATA COMPLETION//BACKWARD HEAT PROBLEM
2 14606 REPRODUCING KERNEL SPACE//NONLOCAL BOUNDARY CONDITIONS//REPRODUCING KERNEL METHOD
3 18280 WAVELET MULTISCALE METHOD//INVERSE COEFFICIENT PROBLEM//METHOD OF VARIATIONAL IMBEDDING
4 7161 INVERSE HEAT CONDUCTION PROBLEM//INVERSE HEAT CONDUCTION//CONJUGATE GRADIENT METHOD
5 37816 DIAGONAL DOMINANT MATRICES//LAGGED FIBONNACI GENERATOR//SOLUTION OF SYTEM OF LINEAR EQUATIONS
6 7223 CARLEMAN ESTIMATES//NULL CONTROLLABILITY//CARLEMAN INEQUALITIES
7 28696 NUMERICAL DIFFERENTIATION//AUTOMATIC FILTERING//MOLLIFICATION
8 30692 KELVIN VOIGT FLUID//GENERALIZED SHOWALTER SIDOROV PROBLEM//EQUATION OF SOBOLEV TYPE
9 33166 CONTROLLABILITY PROBLEM//HALF AXIS//INFLUENCE OPERATOR
10 30118 HAMILTONIAN SYSTEM OF ORDINARY DIFFERENTIAL EQUATIONS//REDUNDANT CONDITIONS//FUNCTIONAL DIFFERENTIAL EQUATION OF HYPERBOLIC TYPE

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