Class information for: |
Basic class information |
Hierarchy of classes |
The table includes all classes above and classes immediately below the current class. |
| Cluster id | Level | Cluster label | #P |
|---|---|---|---|
| 13 | 4 | PHYSICS, PARTICLES & FIELDS//PHYSICS, NUCLEAR//OPTICS | 1062565 |
| 141 | 3 | PHYSICAL REVIEW A//OPTICS//PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 66180 |
| 1640 | 2 | TIME FREQUENCY//ATOMIC CLOCKS//FREQUENCY STANDARD | 7221 |
| 19056 | 1 | MEASUREMENT RUMENT//METROLOGIA//TIME TRANSFER | 546 |
Terms with highest relevance score |
| rank | Category | termType | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|---|
| 1 | MEASUREMENT RUMENT | address | 263865 | 1% | 57% | 8 |
| 2 | METROLOGIA | journal | 251180 | 20% | 4% | 111 |
| 3 | TIME TRANSFER | authKW | 236113 | 3% | 27% | 15 |
| 4 | SIGNALS DATA PROC | address | 184709 | 1% | 80% | 4 |
| 5 | ALLAN VARIATION | authKW | 173166 | 1% | 100% | 3 |
| 6 | FREQUENCY COMPARATOR | authKW | 173166 | 1% | 100% | 3 |
| 7 | FREQUENCY JUMPS | authKW | 173166 | 1% | 100% | 3 |
| 8 | FREQUENCY MEASUREMENT AND STATISTICS | authKW | 173166 | 1% | 100% | 3 |
| 9 | SIMPLE RESPONSE METHOD | authKW | 173166 | 1% | 100% | 3 |
| 10 | SPACE NAVIGATION SYSTEMS | authKW | 173166 | 1% | 100% | 3 |
Web of Science journal categories |
| chi_square_rank | Category | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | Instruments & Instrumentation | 16324 | 54% | 0% | 295 |
| 2 | Acoustics | 3449 | 15% | 0% | 83 |
| 3 | Engineering, Electrical & Electronic | 2920 | 43% | 0% | 237 |
| 4 | Physics, Applied | 944 | 28% | 0% | 155 |
| 5 | Engineering, General | 490 | 8% | 0% | 42 |
| 6 | Engineering, Aerospace | 175 | 3% | 0% | 16 |
| 7 | Telecommunications | 142 | 5% | 0% | 27 |
| 8 | Remote Sensing | 96 | 2% | 0% | 11 |
| 9 | Physics, Multidisciplinary | 29 | 5% | 0% | 28 |
| 10 | Engineering, Marine | 18 | 0% | 0% | 2 |
Address terms |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | MEASUREMENT RUMENT | 263865 | 1% | 57% | 8 |
| 2 | SIGNALS DATA PROC | 184709 | 1% | 80% | 4 |
| 3 | TIME FREQUENCY STANDARD | 173166 | 1% | 100% | 3 |
| 4 | TIME FREQUENCY | 168781 | 7% | 8% | 37 |
| 5 | MEASUREMENT CONTROL RADAR SYST | 115444 | 0% | 100% | 2 |
| 6 | GEOMAT DISASTER PREVENT TECHNOL | 92350 | 1% | 40% | 4 |
| 7 | ADV TECHNOL WIRELESS GRP | 57722 | 0% | 100% | 1 |
| 8 | ALTERNATE MASTER CLOCK | 57722 | 0% | 100% | 1 |
| 9 | ASTROGEODYNAM OBSERV BOROWIEC | 57722 | 0% | 100% | 1 |
| 10 | BESANCON OBSERV | 57722 | 0% | 100% | 1 |
Journals |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | METROLOGIA | 251180 | 20% | 4% | 111 |
| 2 | IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 68691 | 15% | 1% | 82 |
| 3 | IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 51399 | 16% | 1% | 90 |
| 4 | MEASUREMENT TECHNIQUES | 10068 | 3% | 1% | 19 |
| 5 | MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA | 8716 | 1% | 2% | 7 |
| 6 | JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY | 3754 | 1% | 1% | 8 |
| 7 | GPS SOLUTIONS | 2321 | 1% | 1% | 5 |
| 8 | IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE | 2105 | 1% | 1% | 4 |
| 9 | PROCEEDINGS OF THE IEEE | 1888 | 2% | 0% | 12 |
| 10 | PHYSICAL ACOUSTICS | 1340 | 0% | 2% | 1 |
Author Key Words |
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 |