The goal of Cosmology@Home is to compare theoretical models of the universe to the data measured to date and search for the model that best matches it.[3] Other goals may include:
results from Cosmology@Home can help design future cosmological observations and experiments.
results from Cosmology@Home can help prepare for the analysis of future data sets, e.g. from the Planck spacecraft.
Scienceedit
The goal of Cosmology@Home is to search for the model that best describes our Universe and to find the range of models that agree with the available astronomical and particle physics data. The models generated by Cosmology@Home can be compared to measurements of the universe's expansion speed from the Hubble Space Telescope as well as fluctuations in the Cosmic microwave background as measured by the Wilkinson Microwave Anisotropy Probe.
Methodedit
Cosmology@Home uses an innovative way of using machine learning to effectively parallelize a large computational task that involves many inherently sequential calculations over a substantial number of distributed computers.
For any given class of theoretically possible models of the Universe, Cosmology@Home generates tens of thousands of example Universes and packages the cosmological parameters describing these Universes as work units. Each work unit represents a single Universe. When the work unit is requested by a participating computer, this computer simulates this Universe from the Big Bang until today. The result of this simulation is a list of observable properties of this Universe.
This result is then sent back and archived at the Cosmology@Home server. When a sufficient number of example Universes have been simulated, a machine learning algorithm called Pico,[4][5] which was developed by the project scientists of Cosmology@Home for this purpose, learns from these example calculations how to do the simulation for any Universe similar to the example Universes. The difference is that Pico takes a few milliseconds per calculation rather than several hours. Training Pico on 20,000 examples takes about 30 minutes. Once Pico is trained, it can run a full comparison of the class of models (which involves hundreds of thousands of model calculations) with the observational data in a few hours on a standard CPU.
The Cosmology@Home application is proprietary.
Milestonesedit
2007-06-30 Project launches for closed alpha testing - invitation only.
2007-08-23 Project opens registration for public alpha testing.
^ abWandelt, Ben. "Welcome Letter". from the original on December 20, 2016. Retrieved December 15, 2016.
^ abMillea, Marius (December 15, 2016). "Move Completed". from the original on December 20, 2016. Retrieved December 15, 2016.
^"Letter to Cosmology@Home users". Cosmologyathome.org. from the original on 2012-02-26. Retrieved 2011-02-20.
^Fendt, William A.; Wandelt, Benjamin D. (2007). "PICO: Parameters for the impatient cosmologist". The Astrophysical Journal. 654 (1): 2–11. arXiv:astro-ph/0606709. Bibcode:2007ApJ...654....2F. doi:10.1086/508342. S2CID 16572972.
^ Fendt, William A.; Wandelt, Benjamin D. (2007). "Computing High accuracy power spectra with Pico". arXiv:0712.0194 [astro-ph].
^"Beta testing!". Cosmologyathome.org. from the original on 2011-07-25. Retrieved 2011-02-20.
External linksedit
Official website
Website of the Research Group running Cosmology@Home
ApJ paper on PICO
The PICO home page
"Cosmology@Home". BOINC Radio Project Brief (Podcast). May 13, 2021.
Wikimedia Commons has media related to Cosmology@Home.
cosmology, home, volunteer, computing, project, that, uses, boinc, platform, once, departments, astronomy, physics, university, illinois, urbana, champaign, project, moved, institut, lagrange, paris, institut, astrophysique, paris, both, which, located, pierre. Cosmology Home is a volunteer computing project that uses the BOINC platform and was once run at the Departments of Astronomy and Physics at the University of Illinois at Urbana Champaign The project has moved to the Institut Lagrange de Paris and the Institut d Astrophysique de Paris both of which are located in the Pierre and Marie Curie University 1 2 Cosmology HomeOperating systemcross platformPlatformBOINCWebsitewww wbr cosmologyathome wbr org Contents 1 Goals 2 Science 3 Method 4 Milestones 5 See also 6 References 7 External linksGoals editThe goal of Cosmology Home is to compare theoretical models of the universe to the data measured to date and search for the model that best matches it 3 Other goals may include results from Cosmology Home can help design future cosmological observations and experiments results from Cosmology Home can help prepare for the analysis of future data sets e g from the Planck spacecraft Science editThe goal of Cosmology Home is to search for the model that best describes our Universe and to find the range of models that agree with the available astronomical and particle physics data The models generated by Cosmology Home can be compared to measurements of the universe s expansion speed from the Hubble Space Telescope as well as fluctuations in the Cosmic microwave background as measured by the Wilkinson Microwave Anisotropy Probe Method editCosmology Home uses an innovative way of using machine learning to effectively parallelize a large computational task that involves many inherently sequential calculations over a substantial number of distributed computers For any given class of theoretically possible models of the Universe Cosmology Home generates tens of thousands of example Universes and packages the cosmological parameters describing these Universes as work units Each work unit represents a single Universe When the work unit is requested by a participating computer this computer simulates this Universe from the Big Bang until today The result of this simulation is a list of observable properties of this Universe This result is then sent back and archived at the Cosmology Home server When a sufficient number of example Universes have been simulated a machine learning algorithm called Pico 4 5 which was developed by the project scientists of Cosmology Home for this purpose learns from these example calculations how to do the simulation for any Universe similar to the example Universes The difference is that Pico takes a few milliseconds per calculation rather than several hours Training Pico on 20 000 examples takes about 30 minutes Once Pico is trained it can run a full comparison of the class of models which involves hundreds of thousands of model calculations with the observational data in a few hours on a standard CPU The Cosmology Home application is proprietary Milestones edit2007 06 30 Project launches for closed alpha testing invitation only 2007 08 23 Project opens registration for public alpha testing 2007 11 05 Project enters beta testing stage 6 2016 12 15 Project moved to the Institut Lagrange de Paris and the Institut d astrophysique de Paris both of which are located at the Pierre and Marie Curie University 1 2 See also editList of volunteer computing projects Berkeley Open Infrastructure for Network Computing BOINC References edit a b Wandelt Ben Welcome Letter Archived from the original on December 20 2016 Retrieved December 15 2016 a b Millea Marius December 15 2016 Move Completed Archived from the original on December 20 2016 Retrieved December 15 2016 Letter to Cosmology Home users Cosmologyathome org Archived from the original on 2012 02 26 Retrieved 2011 02 20 Fendt William A Wandelt Benjamin D 2007 PICO Parameters for the impatient cosmologist The Astrophysical Journal 654 1 2 11 arXiv astro ph 0606709 Bibcode 2007ApJ 654 2F doi 10 1086 508342 S2CID 16572972 Fendt William A Wandelt Benjamin D 2007 Computing High accuracy power spectra with Pico arXiv 0712 0194 astro ph Beta testing Cosmologyathome org Archived from the original on 2011 07 25 Retrieved 2011 02 20 External links editOfficial website nbsp Website of the Research Group running Cosmology Home ApJ paper on PICO The PICO home page Cosmology Home BOINC Radio Project Brief Podcast May 13 2021 nbsp Wikimedia Commons has media related to Cosmology Home Portals nbsp Free and open source software nbsp Astronomy nbsp Stars nbsp Spaceflight nbsp Outer space nbsp Solar System nbsp Science Retrieved from https en wikipedia org w index php title Cosmology Home amp oldid 1210638130, wikipedia, wiki, book, books, library,
