{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T08:38:07Z","timestamp":1774946287681,"version":"3.50.1"},"reference-count":0,"publisher":"Walter de Gruyter GmbH","issue":"4","license":[{"start":{"date-parts":[[2010,1,1]],"date-time":"2010-01-01T00:00:00Z","timestamp":1262304000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Comput. Methods Appl. Math."],"published-print":{"date-parts":[[2010]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n        We investigate the convergence rate of the quantics-TT (QTT) stochas-\n        tic collocation tensor approximations to solutions of multiparametric elliptic PDEs and\n        construct efficient iterative methods for solving arising high-dimensional parameter-\n        dependent algebraic systems of equations. Such PDEs arise, for example, in the para-\n        metric, deterministic reformulation of elliptic PDEs with random field inputs, based,\n        for example, on the M-term truncated Karhunen-Lo\u00e8ve expansion. We consider both\n        the case of additive and log-additive dependence on the multivariate parameter. The\n        local-global versions of the QTT-rank estimates for the system matrix in terms of the\n        parameter space dimension is proven. Similar rank bounds are observed in numerics for\n        the solutions of the discrete linear system. We propose QTT-truncated iteration based\n        on the construction of solution-adaptive preconditioner that provides robust conver-\n        gence in both additive and log-additive cases. Various numerical tests indicate that the\n        numerical complexity scales almost linearly in the dimension of parametric space M.<\/jats:p>","DOI":"10.2478\/cmam-2010-0023","type":"journal-article","created":{"date-parts":[[2013,4,15]],"date-time":"2013-04-15T16:13:17Z","timestamp":1366042397000},"page":"376-394","source":"Crossref","is-referenced-by-count":43,"title":["Quantics-TT Collocation Approximation of Parameter-Dependent and Stochastic Elliptic PDEs"],"prefix":"10.2478","volume":"10","author":[{"given":"B.N.","family":"Khoromskij","sequence":"first","affiliation":[{"name":"1Max-Planck-Institut f\u00fcr Mathematik in den Naturwissenschaften, Inselstr. 22-26, D-04103 Leipzig, Germany."}]},{"given":"I.","family":"Oseledets","sequence":"additional","affiliation":[{"name":"2INM RAS, Gubkina str. 8, Moscow, Russia."}]}],"member":"374","container-title":["Computational Methods in Applied Mathematics"],"original-title":[],"link":[{"URL":"https:\/\/www.degruyter.com\/view\/journals\/cmam\/10\/4\/article-p376.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.2478\/cmam-2010-0023\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,4,22]],"date-time":"2021-04-22T14:21:45Z","timestamp":1619101305000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.degruyter.com\/view\/journals\/cmam\/10\/4\/article-p376.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2010]]},"references-count":0,"journal-issue":{"issue":"4"},"URL":"https:\/\/doi.org\/10.2478\/cmam-2010-0023","relation":{},"ISSN":["1609-9389","1609-4840"],"issn-type":[{"value":"1609-9389","type":"electronic"},{"value":"1609-4840","type":"print"}],"subject":[],"published":{"date-parts":[[2010]]}}}