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 |
| 33 | 3 | OPTICS//IEEE PHOTONICS TECHNOLOGY LETTERS//JOURNAL OF LIGHTWAVE TECHNOLOGY | 112980 |
| 783 | 2 | FIBER LASER//OPTICS//FIBER AMPLIFIER | 12507 |
| 5749 | 1 | ERBIUM DOPED FIBER AMPLIFIER//GAIN CLAMPING//OPTICAL AMPLIFIERS | 1609 |
Terms with highest relevance score |
| rank | Category | termType | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|---|
| 1 | ERBIUM DOPED FIBER AMPLIFIER | authKW | 1689470 | 11% | 49% | 175 |
| 2 | GAIN CLAMPING | authKW | 723457 | 3% | 75% | 49 |
| 3 | OPTICAL AMPLIFIERS | authKW | 602436 | 9% | 20% | 151 |
| 4 | L BAND EDFA | authKW | 509937 | 2% | 96% | 27 |
| 5 | EDFA | authKW | 470132 | 4% | 41% | 59 |
| 6 | OPTICAL FIBER AMPLIFIERS | authKW | 446819 | 6% | 23% | 101 |
| 7 | TELEKOM MALAYSIA PHOTON | address | 422108 | 2% | 86% | 25 |
| 8 | ERBIUM DOPED FIBER AMPLIFIER EDFA | authKW | 279486 | 2% | 42% | 34 |
| 9 | FIBRE AMPLIFIERS | authKW | 241975 | 2% | 46% | 27 |
| 10 | DOUBLE PASS EDFA | authKW | 216952 | 1% | 92% | 12 |
Web of Science journal categories |
| chi_square_rank | Category | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | Optics | 43859 | 68% | 0% | 1093 |
| 2 | Engineering, Electrical & Electronic | 17234 | 60% | 0% | 968 |
| 3 | Telecommunications | 5097 | 16% | 0% | 250 |
| 4 | Physics, Applied | 3463 | 31% | 0% | 503 |
| 5 | Materials Science, Ceramics | 8 | 1% | 0% | 13 |
| 6 | Computer Science, Information Systems | 5 | 1% | 0% | 18 |
| 7 | Computer Science, Hardware & Architecture | -0 | 0% | 0% | 5 |
| 8 | Automation & Control Systems | -0 | 0% | 0% | 6 |
| 9 | Mining & Mineral Processing | -0 | 0% | 0% | 1 |
| 10 | History & Philosophy of Science | -0 | 0% | 0% | 1 |
Address terms |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | TELEKOM MALAYSIA PHOTON | 422108 | 2% | 86% | 25 |
| 2 | PHOTON FIBER OPT SYST | 78591 | 1% | 24% | 17 |
| 3 | OPT FIBER DEVICES GRP | 58758 | 0% | 100% | 3 |
| 4 | LIGHTWAVE COMMUN SECT | 44067 | 0% | 75% | 3 |
| 5 | LIGHTWAVE TECHNOL DEV | 39172 | 0% | 100% | 2 |
| 6 | NETWORK SYST NEDERLAND | 39172 | 0% | 100% | 2 |
| 7 | RIOARO | 39172 | 0% | 100% | 2 |
| 8 | OPT COMMUN SYST | 37649 | 1% | 19% | 10 |
| 9 | SPE UM TECHNOL GRP SPECTECH | 35253 | 0% | 60% | 3 |
| 10 | OPT COMMUN RD GRP | 29376 | 0% | 50% | 3 |
Journals |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass |
|---|---|---|---|---|---|
| 1 | IEEE PHOTONICS TECHNOLOGY LETTERS | 107527 | 19% | 2% | 301 |
| 2 | ELECTRONICS LETTERS | 31504 | 16% | 1% | 253 |
| 3 | JOURNAL OF LIGHTWAVE TECHNOLOGY | 28635 | 8% | 1% | 135 |
| 4 | FIBER AND INTEGRATED OPTICS | 19553 | 2% | 3% | 29 |
| 5 | OPTICAL FIBER TECHNOLOGY | 10584 | 2% | 2% | 26 |
| 6 | OPTICS COMMUNICATIONS | 8210 | 7% | 0% | 106 |
| 7 | MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 6586 | 4% | 0% | 72 |
| 8 | IEE PROCEEDINGS-OPTOELECTRONICS | 2847 | 1% | 1% | 11 |
| 9 | IEEE JOURNAL OF QUANTUM ELECTRONICS | 2432 | 2% | 0% | 33 |
| 10 | BRITISH TELECOM TECHNOLOGY JOURNAL | 2384 | 0% | 3% | 4 |
Author Key Words |
| chi_square_rank | term | chi_square | shrOfCwithTerm | shrOfTermInClass | termInClass | LCSH search | Wikipedia search |
|---|---|---|---|---|---|---|---|
| 1 | ERBIUM DOPED FIBER AMPLIFIER | 1689470 | 11% | 49% | 175 | Search ERBIUM+DOPED+FIBER+AMPLIFIER | Search ERBIUM+DOPED+FIBER+AMPLIFIER |
| 2 | GAIN CLAMPING | 723457 | 3% | 75% | 49 | Search GAIN+CLAMPING | Search GAIN+CLAMPING |
| 3 | OPTICAL AMPLIFIERS | 602436 | 9% | 20% | 151 | Search OPTICAL+AMPLIFIERS | Search OPTICAL+AMPLIFIERS |
| 4 | L BAND EDFA | 509937 | 2% | 96% | 27 | Search L+BAND+EDFA | Search L+BAND+EDFA |
| 5 | EDFA | 470132 | 4% | 41% | 59 | Search EDFA | Search EDFA |
| 6 | OPTICAL FIBER AMPLIFIERS | 446819 | 6% | 23% | 101 | Search OPTICAL+FIBER+AMPLIFIERS | Search OPTICAL+FIBER+AMPLIFIERS |
| 7 | ERBIUM DOPED FIBER AMPLIFIER EDFA | 279486 | 2% | 42% | 34 | Search ERBIUM+DOPED+FIBER+AMPLIFIER+EDFA | Search ERBIUM+DOPED+FIBER+AMPLIFIER+EDFA |
| 8 | FIBRE AMPLIFIERS | 241975 | 2% | 46% | 27 | Search FIBRE+AMPLIFIERS | Search FIBRE+AMPLIFIERS |
| 9 | DOUBLE PASS EDFA | 216952 | 1% | 92% | 12 | Search DOUBLE+PASS+EDFA | Search DOUBLE+PASS+EDFA |
| 10 | TWO STAGE EDFA | 176275 | 1% | 100% | 9 | Search TWO+STAGE+EDFA | Search TWO+STAGE+EDFA |
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 |