{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:26:59Z","timestamp":1760243219481,"version":"build-2065373602"},"reference-count":41,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2014,1,16]],"date-time":"2014-01-16T00:00:00Z","timestamp":1389830400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>Modeling financial time series at different time scales is still an open challenge. The choice of a suitable indicator quantifying the distance between the model and the data is therefore of fundamental importance for selecting models. In this paper, we propose a multiscale model selection method based on the Jensen\u2013Shannon distance in order to select the model that is able to better reproduce the distribution of price changes at different time scales. Specifically, we consider the problem of modeling the ultra high frequency dynamics of an asset with a large tick-to-price ratio. We study the price process at different time scales and compute the Jensen\u2013Shannon distance between the original dataset and different models, showing that the coupling between spread and returns is important to model return distribution at different time scales of observation, ranging from the scale of single transactions to the daily time scale.<\/jats:p>","DOI":"10.3390\/e16010567","type":"journal-article","created":{"date-parts":[[2014,1,16]],"date-time":"2014-01-16T11:14:29Z","timestamp":1389870869000},"page":"567-581","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Multiscale Model Selection for High-Frequency Financial Data of a Large Tick Stock by Means of the Jensen\u2013Shannon Metric"],"prefix":"10.3390","volume":"16","author":[{"given":"Gianbiagio","family":"Curato","sequence":"first","affiliation":[{"name":"Scuola Normale Superiore, Piazza dei Cavalieri 7, Pisa 56126, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fabrizio","family":"Lillo","sequence":"additional","affiliation":[{"name":"Scuola Normale Superiore, Piazza dei Cavalieri 7, Pisa 56126, Italy"},{"name":"Dipartimento di Fisica e Chimica, Viale delle Scienze, Palermo 90128, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2014,1,16]]},"reference":[{"key":"ref_1","unstructured":"Bouchaud, J.-P., and Potters, M. 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