Class information for:
Level 1: PHOTOPOLYMER//HOLOGRAPHIC DATA STORAGE//IND ENGN OPT

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
13 4 PHYSICS, PARTICLES & FIELDS//PHYSICS, NUCLEAR//OPTICS 1062565
263 3       OPTICS//APPLIED OPTICS//OPTICS AND LASERS IN ENGINEERING 45499
584 2             DIGITAL HOLOGRAPHY//APPLIED OPTICS//OPTICS 14701
4500 1                   PHOTOPOLYMER//HOLOGRAPHIC DATA STORAGE//IND ENGN OPT 1808

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PHOTOPOLYMER authKW 1180665 9% 41% 164
2 HOLOGRAPHIC DATA STORAGE authKW 963999 4% 71% 78
3 IND ENGN OPT address 529706 3% 62% 49
4 HOLOGRAPHIC MEMORY authKW 500004 3% 61% 47
5 HOLOGRAPHIC STORAGE authKW 268619 2% 45% 34
6 VOLUME HOLOGRAPHY authKW 249123 1% 53% 27
7 INTERUNIV OPT address 234301 2% 34% 40
8 VOLUME HOLOGRAPHIC MEMORY authKW 217872 1% 83% 15
9 HOLOGRAPHIC RECORDING MATERIALS authKW 161374 1% 36% 26
10 HOLOGRAPHY authKW 158435 6% 8% 115

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 40493 62% 0% 1116
2 Physics, Applied 2590 26% 0% 473
3 Spectroscopy 101 3% 0% 49
4 Polymer Science 60 3% 0% 62
5 Materials Science, Multidisciplinary 55 8% 0% 140
6 Engineering, Electrical & Electronic 47 6% 0% 106
7 Nanoscience & Nanotechnology 35 3% 0% 47
8 Imaging Science & Photographic Technology 15 1% 0% 11
9 Physics, Multidisciplinary 4 3% 0% 47
10 Computer Science, Hardware & Architecture 1 0% 0% 8

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 IND ENGN OPT 529706 3% 62% 49
2 INTERUNIV OPT 234301 2% 34% 40
3 FIS INGN SISTEMAS TEORIA SENAL 125371 2% 16% 44
4 UNIV FIS LICADA CIENCIAS TECNOL 106623 1% 32% 19
5 PHOTON OPTOELECT TECH 104581 0% 100% 6
6 TERA BYTES MEMORY DEV 104581 0% 100% 6
7 OPT FARMACOL ANAT 72712 1% 17% 24
8 CIENCIAS EXPT TECNOL 70582 0% 45% 9
9 TECHNOL INNOVAT INFORMAT TELECOMMUN 57039 0% 55% 6
10 COMMUN OPTOELECT SFI STRATEG CLUSTE 55775 0% 80% 4

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 APPLIED OPTICS 31959 14% 1% 257
2 JAPANESE JOURNAL OF APPLIED PHYSICS 25308 9% 1% 155
3 OPTICS LETTERS 17205 10% 1% 173
4 JOURNAL OF OPTICAL TECHNOLOGY 6910 2% 1% 36
5 OPTICS COMMUNICATIONS 6341 5% 0% 99
6 JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS 5444 1% 1% 26
7 OPTICAL REVIEW 5101 1% 1% 25
8 OPTICAL ENGINEERING 4882 4% 0% 64
9 JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 4413 5% 0% 90
10 OPTICS EXPRESS 4022 5% 0% 92

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 PHOTOPOLYMER 1180665 9% 41% 164 Search PHOTOPOLYMER Search PHOTOPOLYMER
2 HOLOGRAPHIC DATA STORAGE 963999 4% 71% 78 Search HOLOGRAPHIC+DATA+STORAGE Search HOLOGRAPHIC+DATA+STORAGE
3 HOLOGRAPHIC MEMORY 500004 3% 61% 47 Search HOLOGRAPHIC+MEMORY Search HOLOGRAPHIC+MEMORY
4 HOLOGRAPHIC STORAGE 268619 2% 45% 34 Search HOLOGRAPHIC+STORAGE Search HOLOGRAPHIC+STORAGE
5 VOLUME HOLOGRAPHY 249123 1% 53% 27 Search VOLUME+HOLOGRAPHY Search VOLUME+HOLOGRAPHY
6 VOLUME HOLOGRAPHIC MEMORY 217872 1% 83% 15 Search VOLUME+HOLOGRAPHIC+MEMORY Search VOLUME+HOLOGRAPHIC+MEMORY
7 HOLOGRAPHIC RECORDING MATERIALS 161374 1% 36% 26 Search HOLOGRAPHIC+RECORDING+MATERIALS Search HOLOGRAPHIC+RECORDING+MATERIALS
8 HOLOGRAPHY 158435 6% 8% 115 Search HOLOGRAPHY Search HOLOGRAPHY
9 BRAGG MISMATCH 156871 0% 100% 9 Search BRAGG+MISMATCH Search BRAGG+MISMATCH
10 VOLUME HOLOGRAPHIC STORAGE 140597 1% 73% 11 Search VOLUME+HOLOGRAPHIC+STORAGE Search VOLUME+HOLOGRAPHIC+STORAGE

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 15548 HOLOGRAPHIC RECORDING MATERIALS//PHOTOSENSITIVE PROCESSING//DICHROMATED GELATIN
2 30710 SELF WRITTEN WAVEGUIDE SWW//PHOTOMASK TRANSFER METHOD//SELF WRITING
3 36725 DEEP HOLOGRAMS//SELECTOGRAMS//DEEP VOLUME HOLOGRAMS
4 14689 OPTICAL NEURAL NETWORKS//OPTICAL ASSOCIATIVE MEMORY//OPTOELECTRONIC THRESHOLDER
5 22398 PHOTO THERMO REFRACTIVE GLASS//VOLUME HOLOGRAPHIC GRATING//ULTRASHORT PULSED BEAM
6 38660 PHOTOVOLTA METROL//ADDITIVE COLORATION//COLLOIDAL CENTER
7 9173 OPTICAL ENCRYPTION//OPTICAL IMAGE ENCRYPTION//DOUBLE RANDOM PHASE ENCODING
8 480 PHOTOREFRACTIVE CRYSTAL//PHOTOREFRACTIVE EFFECT//TWO WAVE MIXING
9 1879 POLYMER DISPERSED LIQUID CRYSTAL//PDLC//ELECTRO OPTICAL PROPERTIES
10 25095 WRITE ONCE//DVD R//WRITE STRATEGY

Go to start page