caa a22 4500 469077352 CHVBK 20180323132938.0 cr unu---uuuuu 170328e19920901xx s 000 0 eng 10.1007/BF02507849 doi (NATIONALLICENCE)springer-10.1007/BF02507849 Rule-guided identification of cosmic-ray patterns in PLASTEX [Elektronische Daten] [O. Catalano, B. Lenzitti, J. Linsley, A. Machì, L. Scarsi] Summary: Some techniques devised in the computer science fields of pattern recognition and expert systems are being applied to the interpretation of EAS responses in the PLASTEX experiment. An attempt is made to codity in a set of rules the expertise of trained researchers who are able to recognize and classify different hit patterns even in the presence of noisy background, and in spite of imperfections in the detector response. The patterns expected to be useful include, but are not limited to, track patterns. The software described here, as a progress report, automatically finds patterns corresponding to isolated tracks, and patterns composed of tracks that connect with each other in a layer of dense material. Tracks are reconstructed iteratively, using both geometrical and internal consistency arguments. Multihits, geometrical inefficiency, mechanical imperfection and track bending are taken into account. Data preprocessing is applied to multihits according to a theoretical model of the particle-detector interaction, and the presence of tracks in dead detector areas is inferred by probabilistic arguments. Finally, particle scattering is allowed for using a variable-size tolerance cone during the track reconstruction procedure. Examples are given of application of the method to recognition of nearly straight tracks, such as those expected to be made by high-energy muons, and of more complicated patterns made of connected straight tracks. Società Italiana di Fisica, 1992 Cosmic-rays nationallicence PACS 94.40.My nationallicence Extensive air showers nationallicence Computation techniques nationallicence Catalano O. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut Lenzitti B. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut Linsley J. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut Machì A. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut Scarsi L. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut Il Nuovo Cimento C Kluwer Academic Publishers 15/5(1992-09-01), 763-769 0390-5551 15:5<763 1992 15 11543 https://doi.org/10.1007/BF02507849 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02507849 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Catalano O. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut NATIONALLICENCE 700 1- Lenzitti B. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut NATIONALLICENCE 700 1- Linsley J. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut NATIONALLICENCE 700 1- Machì A. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut NATIONALLICENCE 700 1- Scarsi L. Instituto di Fisica Cosmica ed Applicazioni dell'Informatica del CNR, Palermo, Italia aut NATIONALLICENCE 773 0- Il Nuovo Cimento C Kluwer Academic Publishers 15/5(1992-09-01), 763-769 0390-5551 15:5<763 1992 15 11543 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer