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http://hdl.handle.net/1942/798
Title: | The Evolution of core collections can be described via Banach space valued stochastic processes | Authors: | EGGHE, Leo | Issue Date: | 1998 | Publisher: | Elsevier | Source: | Mathematical and Computer Modelling, 28(9). p. 11-17 | Abstract: | Core collections, as e.g., the set of source journals selected by the Institute for Scientific Information, vary from year to year: most of them stay, some leave, and others enter. In this paper, we show that the mechanism of this process can be revealed by using stochastic processes with values in an infinite dimensional Banach space. More concretely we show that the evolution can be described by a quasi-martingale with values in the Hubert space L2. Criteria for the convergence of these processes are given, leading to a stable limit set of core items, for t (time) high. | Keywords: | source journal; core collection; Banach space; stochastic process; quasimartingale | Document URI: | http://hdl.handle.net/1942/798 | ISSN: | 0895-7177 | DOI: | 10.1016/S0895-7177(98)00141-1 | ISI #: | 000077413300002 | Type: | Journal Contribution | Validations: | ecoom 1999 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
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evolution.pdf | Peer-reviewed author version | 244.94 kB | Adobe PDF | View/Open |
collections 1.pdf | Published version | 461.95 kB | Adobe PDF | View/Open |
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