{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,6,19]],"date-time":"2025-06-19T04:09:00Z","timestamp":1750306140685,"version":"3.41.0"},"reference-count":25,"publisher":"Association for Computing Machinery (ACM)","issue":"4","license":[{"start":{"date-parts":[[2017,5,10]],"date-time":"2017-05-10T00:00:00Z","timestamp":1494374400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["SIGMETRICS Perform. Eval. Rev."],"published-print":{"date-parts":[[2017,5,10]]},"abstract":"<jats:p>A main aspect in computational modelling of biological systems is the determination of model structure and model parameters. Due to economical and technical reasons, only part of these details are well characterized, while the rest are unknown. To deal with this difficulty, many reverse engineering and parameter estimation methods have been proposed in the literature, however these methods often need an amount of experimental data not always available.<\/jats:p>\n          <jats:p>In this paper we propose an alternative approach, which overcomes model indetermination solving an Optimization Problem (OP) with an objective function that, similarly to Flux Balance Analysis, is derived from an empirical biological knowledge and does not require large amounts of data. The system behaviour is described by a set of Ordinary Differential Equations (ODE). Model indetermination is resolved selecting time-varying coefficients that maximize\/ minimize the objective function at each ODE integration step. Moreover, to facilitate the modelling phase we provide a graphical formalism, based on Petri Nets, which can be used to derive the corresponding ODEs and OP. Finally, the approach is illustrated on a case study focused on cancer metabolism.<\/jats:p>","DOI":"10.1145\/3092819.3092830","type":"journal-article","created":{"date-parts":[[2017,5,10]],"date-time":"2017-05-10T18:08:53Z","timestamp":1494439733000},"page":"91-102","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":2,"title":["Overcoming the lack of kinetic information in biochemical reactions networks"],"prefix":"10.1145","volume":"44","author":[{"given":"Niccol\u00f3","family":"Totis","sequence":"first","affiliation":[{"name":"University of Turin, Turin, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laura","family":"Follia","sequence":"additional","affiliation":[{"name":"University of Turin, Turin, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chiara","family":"Riganti","sequence":"additional","affiliation":[{"name":"University of Turin, Turin, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francesco","family":"Novelli","sequence":"additional","affiliation":[{"name":"University of Turin, Turin, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francesca","family":"Cordero","sequence":"additional","affiliation":[{"name":"University of Turin, Turin, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marco","family":"Beccuti","sequence":"additional","affiliation":[{"name":"University of Turin, Turin, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2017,5,10]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-642-13675-7_19"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1038\/nchembio.186"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1742-4658.2008.06784.x"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.3390\/metabo4041034"},{"key":"e_1_2_1_5_1","volume-title":"An Introduction to Probability Theory","author":"Feller W.","year":"1968","unstructured":"W. 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