{"id":"https://openalex.org/W7126038986","doi":"https://doi.org/10.48550/arxiv.2601.20295","title":"Cheap2Rich: A Multi-Fidelity Framework for Data Assimilation and System Identification of Multiscale Physics -- Rotating Detonation Engines","display_name":"Cheap2Rich: A Multi-Fidelity Framework for Data Assimilation and System Identification of Multiscale Physics -- Rotating Detonation Engines","publication_year":2026,"publication_date":"2026-01-28","ids":{"openalex":"https://openalex.org/W7126038986","doi":"https://doi.org/10.48550/arxiv.2601.20295"},"language":null,"primary_location":{"id":"pmh:doi:10.48550/arxiv.2601.20295","is_oa":true,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S4406922384","display_name":"Open MIND","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"publisher-specific-oa","license_id":"https://openalex.org/licenses/publisher-specific-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":null,"any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5124231469","display_name":"Yuxuan Bao","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Bao, Yuxuan","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5124237286","display_name":"Jan Zajac","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Zajac, Jan","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5124245418","display_name":"Megan Powers","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Powers, Megan","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5124217732","display_name":"Venkat Raman","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Raman, Venkat","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5124250576","display_name":"J. Nathan Kutz","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Kutz, J. Nathan","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11206","display_name":"Model Reduction and Neural Networks","score":0.843500018119812,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11206","display_name":"Model Reduction and Neural Networks","score":0.843500018119812,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11619","display_name":"Combustion and Detonation Processes","score":0.016300000250339508,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11449","display_name":"Mechanical and Optical Resonators","score":0.01140000019222498,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/data-assimilation","display_name":"Data assimilation","score":0.78329998254776},{"id":"https://openalex.org/keywords/bridging","display_name":"Bridging (networking)","score":0.5803999900817871},{"id":"https://openalex.org/keywords/detonation","display_name":"Detonation","score":0.545799970626831},{"id":"https://openalex.org/keywords/complex-system","display_name":"Complex system","score":0.5210999846458435},{"id":"https://openalex.org/keywords/identification","display_name":"Identification (biology)","score":0.49470001459121704},{"id":"https://openalex.org/keywords/system-identification","display_name":"System identification","score":0.4652999937534332},{"id":"https://openalex.org/keywords/physical-system","display_name":"Physical system","score":0.3720000088214874},{"id":"https://openalex.org/keywords/experimental-data","display_name":"Experimental data","score":0.34209999442100525}],"concepts":[{"id":"https://openalex.org/C24552861","wikidata":"https://www.wikidata.org/wiki/Q2670177","display_name":"Data assimilation","level":2,"score":0.78329998254776},{"id":"https://openalex.org/C174348530","wikidata":"https://www.wikidata.org/wiki/Q188635","display_name":"Bridging (networking)","level":2,"score":0.5803999900817871},{"id":"https://openalex.org/C203397868","wikidata":"https://www.wikidata.org/wiki/Q786054","display_name":"Detonation","level":3,"score":0.545799970626831},{"id":"https://openalex.org/C47822265","wikidata":"https://www.wikidata.org/wiki/Q854457","display_name":"Complex system","level":2,"score":0.5210999846458435},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5198000073432922},{"id":"https://openalex.org/C116834253","wikidata":"https://www.wikidata.org/wiki/Q2039217","display_name":"Identification (biology)","level":2,"score":0.49470001459121704},{"id":"https://openalex.org/C119247159","wikidata":"https://www.wikidata.org/wiki/Q1366192","display_name":"System identification","level":3,"score":0.4652999937534332},{"id":"https://openalex.org/C116672817","wikidata":"https://www.wikidata.org/wiki/Q1454986","display_name":"Physical system","level":2,"score":0.3720000088214874},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.35339999198913574},{"id":"https://openalex.org/C55037315","wikidata":"https://www.wikidata.org/wiki/Q5421151","display_name":"Experimental data","level":2,"score":0.34209999442100525},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3352000117301941},{"id":"https://openalex.org/C133731056","wikidata":"https://www.wikidata.org/wiki/Q4917288","display_name":"Control engineering","level":1,"score":0.3149000108242035},{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.31119999289512634},{"id":"https://openalex.org/C48103436","wikidata":"https://www.wikidata.org/wiki/Q599031","display_name":"State (computer science)","level":2,"score":0.3068000078201294},{"id":"https://openalex.org/C79379906","wikidata":"https://www.wikidata.org/wiki/Q3174497","display_name":"Dynamical systems theory","level":2,"score":0.3061000108718872},{"id":"https://openalex.org/C163985040","wikidata":"https://www.wikidata.org/wiki/Q1172399","display_name":"Data acquisition","level":2,"score":0.3043999969959259},{"id":"https://openalex.org/C67186912","wikidata":"https://www.wikidata.org/wiki/Q367664","display_name":"Data modeling","level":2,"score":0.2955000102519989},{"id":"https://openalex.org/C2781170535","wikidata":"https://www.wikidata.org/wiki/Q30587856","display_name":"Noisy data","level":2,"score":0.28139999508857727},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.27230000495910645},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.2711000144481659},{"id":"https://openalex.org/C17500928","wikidata":"https://www.wikidata.org/wiki/Q959968","display_name":"Control system","level":2,"score":0.26429998874664307},{"id":"https://openalex.org/C58328972","wikidata":"https://www.wikidata.org/wiki/Q184609","display_name":"Expert system","level":2,"score":0.26330000162124634},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.25529998540878296},{"id":"https://openalex.org/C175801342","wikidata":"https://www.wikidata.org/wiki/Q1988917","display_name":"Data analysis","level":2,"score":0.2547000050544739}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:doi:10.48550/arxiv.2601.20295","is_oa":true,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S4406922384","display_name":"Open MIND","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"publisher-specific-oa","license_id":"https://openalex.org/licenses/publisher-specific-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"},{"id":"doi:10.48550/arxiv.2601.20295","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2601.20295","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":{"id":"pmh:doi:10.48550/arxiv.2601.20295","is_oa":true,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S4406922384","display_name":"Open MIND","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"publisher-specific-oa","license_id":"https://openalex.org/licenses/publisher-specific-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"},"sustainable_development_goals":[{"display_name":"Industry, innovation and infrastructure","id":"https://metadata.un.org/sdg/9","score":0.40931496024131775}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Bridging":[0],"the":[1,68],"sim2real":[2],"gap":[3],"between":[4],"computationally":[5],"inexpensive":[6],"models":[7,29],"and":[8,88,124,135,138],"complex":[9,128],"physical":[10],"systems":[11,79],"remains":[12],"a":[13,41,57,75,117],"central":[14],"challenge":[15],"in":[16,24,127],"machine":[17],"learning":[18],"applications":[19],"to":[20],"engineering":[21],"problems,":[22],"particularly":[23],"multi-scale":[25,42,129],"settings":[26],"where":[27],"reduced-order":[28],"typically":[30],"capture":[31],"only":[32],"dominant":[33],"dynamics.":[34,144],"In":[35],"this":[36,147],"work,":[37],"we":[38],"present":[39],"Cheap2Rich,":[40],"data":[43,122],"assimilation":[44,123],"framework":[45,120],"that":[46,80],"reconstructs":[47,97],"high-fidelity":[48,98],"state":[49],"spaces":[50],"from":[51,101],"sparse":[52,102],"sensor":[53],"histories":[54],"by":[55],"combining":[56],"fast":[58],"low-fidelity":[59],"prior":[60],"with":[61,84,111],"learned,":[62],"interpretable":[63,142],"discrepancy":[64,108,143],"corrections.":[65],"We":[66],"demonstrate":[67],"performance":[69],"on":[70],"rotating":[71],"detonation":[72],"engines":[73],"(RDEs),":[74],"challenging":[76],"class":[77],"of":[78],"couple":[81],"detonation-front":[82],"propagation":[83],"injector-driven":[85,112],"unsteadiness,":[86],"mixing,":[87],"stiff":[89],"chemistry":[90],"across":[91],"disparate":[92],"scales.":[93],"Our":[94],"approach":[95],"successfully":[96],"RDE":[99],"states":[100],"measurements":[103],"while":[104,140],"isolating":[105],"physically":[106],"meaningful":[107],"dynamics":[109],"associated":[110],"effects.":[113],"The":[114],"results":[115],"highlight":[116],"general":[118],"multi-fidelity":[119],"for":[121,146],"system":[125],"identification":[126],"systems,":[130],"enabling":[131],"rapid":[132],"design":[133],"exploration":[134],"real-time":[136],"monitoring":[137],"control":[139],"providing":[141],"Code":[145],"project":[148],"is":[149,150],"available":[151],"at:":[152],"github.com/kro0l1k/Cheap2Rich.":[153]},"counts_by_year":[],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2026-01-30T00:00:00"}
