{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,22]],"date-time":"2026-02-22T06:18:10Z","timestamp":1771741090674,"version":"3.50.1"},"reference-count":114,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2021,6,26]],"date-time":"2021-06-26T00:00:00Z","timestamp":1624665600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010661","name":"Horizon 2020 Framework Programme","doi-asserted-by":"publisher","award":["814624"],"award-info":[{"award-number":["814624"]}],"id":[{"id":"10.13039\/100010661","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>An earlier study carried out in 2010 at the archaeological site of L\u2019Almoina (Valencia, Spain) found marked daily fluctuations of temperature, especially in summer. Such pronounced gradient is due to the design of the museum, which includes a skylight as a ceiling, covering part of the remains in the museum. In this study, it was found that the thermal conditions are not homogeneous and vary at different points of the museum and along the year. According to the European Standard EN10829, it is necessary to define a plan for long-term monitoring, elaboration and study of the microclimatic data, in order to preserve the artifacts. With the aforementioned goal of extending the study and offering a tool to monitor the microclimate, a new statistical methodology is proposed. For this propose, during one year (October 2019\u2013October 2020), a set of 27 data-loggers was installed, aimed at recording the temperature inside the museum. By applying principal component analysis and k-means, three different microclimates were established. In order to characterize the differences among the three zones, two statistical techniques were put forward. Firstly, Sparse Partial Least Squares Discriminant Analysis (sPLS-DA) was applied to a set of 671 variables extracted from the time series. The second approach consisted of using a random forest algorithm, based on the same functions and variables employed by the first methodology. Both approaches allowed the identification of the main variables that best explain the differences between zones. According to the results, it is possible to establish a representative subset of sensors recommended for the long-term monitoring of temperatures at the museum. The statistical approach proposed here is very effective for discriminant time series analysis and for explaining the differences in microclimate when a net of sensors is installed in historical buildings or museums.<\/jats:p>","DOI":"10.3390\/s21134377","type":"journal-article","created":{"date-parts":[[2021,6,27]],"date-time":"2021-06-27T23:57:22Z","timestamp":1624838242000},"page":"4377","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Multivariate Time Series Analysis of Temperatures in the Archaeological Museum of L\u2019Almoina (Valencia, Spain)"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5569-460X","authenticated-orcid":false,"given":"Sandra","family":"Ram\u00edrez","sequence":"first","affiliation":[{"name":"Department of Applied Statistics, Operations Research and Quality, Universitat Polit\u00e8cnica de Val\u00e8ncia, Camino de Vera s\/n, 46022 Valencia, Spain"},{"name":"Department of Natural Sciences and Mathematics, Pontificia Universidad Javeriana Cali, Cali 760031, Colombia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8361-0554","authenticated-orcid":false,"given":"Manuel","family":"Zarzo","sequence":"additional","affiliation":[{"name":"Department of Applied Statistics, Operations Research and Quality, Universitat Polit\u00e8cnica de Val\u00e8ncia, Camino de Vera s\/n, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7062-245X","authenticated-orcid":false,"given":"Fernando-Juan","family":"Garc\u00eda-Diego","sequence":"additional","affiliation":[{"name":"Department of Applied Physics (U.D. Industrial Engineering), Universitat Polit\u00e8cnica de Val\u00e8ncia, Camino de Vera s\/n, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1457","DOI":"10.1016\/S0360-1323(03)00113-6","article-title":"Environmental parameters in museums","volume":"38","author":"Pavlogeorgatos","year":"2003","journal-title":"Build. Environ."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"345","DOI":"10.1016\/j.culher.2009.05.003","article-title":"Assessment of thermo-hygrometric quality in museums: Method and in-field application to the Duccio di Buoninsegna exhibition at Santa Maria della Scala (Siena, Italy)","volume":"11","author":"Corgnati","year":"2010","journal-title":"J. Cult. Herit."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Sesana, E., Gagnon, A.S., Bertolin, C., and Hughes, J. (2018). 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