{"id":"https://openalex.org/W7152469138","doi":"https://doi.org/10.48550/arxiv.2604.07030","title":"MoE Routing Testbed: Studying Expert Specialization and Routing Behavior at Small Scale","display_name":"MoE Routing Testbed: Studying Expert Specialization and Routing Behavior at Small Scale","publication_year":2026,"publication_date":"2026-04-08","ids":{"openalex":"https://openalex.org/W7152469138","doi":"https://doi.org/10.48550/arxiv.2604.07030"},"language":null,"primary_location":{"id":"doi:10.48550/arxiv.2604.07030","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2604.07030","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":false,"raw_source_name":null,"raw_type":"Preprint"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.48550/arxiv.2604.07030","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5005385745","display_name":"Tobias Falke","orcid":"https://orcid.org/0000-0002-9525-0330"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Falke, Tobias","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5025751811","display_name":"Nicolas Anastassacos","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Anastassacos, Nicolas","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5133293629","display_name":"Samson Tan","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Tan, Samson","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5119968306","display_name":"Chankrisna Richy Meas","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Meas, Chankrisna Richy","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076193297","display_name":"Chandana Satya Prakash","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Prakash, Chandana Satya","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5130387470","display_name":"Nitesh Sekhar","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Sekhar, Nitesh","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5133257584","display_name":"M Saiful Bari","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Bari, M Saiful","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5133265113","display_name":"Krishna Kompella","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Kompella, Krishna","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5043002930","display_name":"Gamaleldin F. Elsayed","orcid":"https://orcid.org/0000-0002-4676-4220"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Elsayed, Gamaleldin F.","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"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/T11273","display_name":"Advanced Graph Neural Networks","score":0.1606999933719635,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11273","display_name":"Advanced Graph Neural Networks","score":0.1606999933719635,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11704","display_name":"Mobile Crowdsensing and Crowdsourcing","score":0.11980000138282776,"subfield":{"id":"https://openalex.org/subfields/1706","display_name":"Computer Science Applications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10028","display_name":"Topic Modeling","score":0.1005999967455864,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/routing","display_name":"Routing (electronic design automation)","score":0.6385999917984009},{"id":"https://openalex.org/keywords/testbed","display_name":"Testbed","score":0.5777999758720398},{"id":"https://openalex.org/keywords/static-routing","display_name":"Static routing","score":0.5551999807357788},{"id":"https://openalex.org/keywords/scope","display_name":"Scope (computer science)","score":0.5077000260353088},{"id":"https://openalex.org/keywords/multipath-routing","display_name":"Multipath routing","score":0.48739999532699585},{"id":"https://openalex.org/keywords/scale","display_name":"Scale (ratio)","score":0.4523000121116638},{"id":"https://openalex.org/keywords/policy-based-routing","display_name":"Policy-based routing","score":0.44359999895095825},{"id":"https://openalex.org/keywords/routing-domain","display_name":"Routing domain","score":0.4169999957084656}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7290999889373779},{"id":"https://openalex.org/C74172769","wikidata":"https://www.wikidata.org/wiki/Q1446839","display_name":"Routing (electronic design automation)","level":2,"score":0.6385999917984009},{"id":"https://openalex.org/C31395832","wikidata":"https://www.wikidata.org/wiki/Q1318674","display_name":"Testbed","level":2,"score":0.5777999758720398},{"id":"https://openalex.org/C204948658","wikidata":"https://www.wikidata.org/wiki/Q1119410","display_name":"Static routing","level":4,"score":0.5551999807357788},{"id":"https://openalex.org/C2778012447","wikidata":"https://www.wikidata.org/wiki/Q1034415","display_name":"Scope (computer science)","level":2,"score":0.5077000260353088},{"id":"https://openalex.org/C76522221","wikidata":"https://www.wikidata.org/wiki/Q5035396","display_name":"Multipath routing","level":5,"score":0.48739999532699585},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.4523000121116638},{"id":"https://openalex.org/C196423136","wikidata":"https://www.wikidata.org/wiki/Q7209671","display_name":"Policy-based routing","level":5,"score":0.44359999895095825},{"id":"https://openalex.org/C94600068","wikidata":"https://www.wikidata.org/wiki/Q7371621","display_name":"Routing domain","level":5,"score":0.4169999957084656},{"id":"https://openalex.org/C2775896111","wikidata":"https://www.wikidata.org/wiki/Q642560","display_name":"Router","level":2,"score":0.4131999909877777},{"id":"https://openalex.org/C184896649","wikidata":"https://www.wikidata.org/wiki/Q290066","display_name":"Routing table","level":4,"score":0.4083999991416931},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.40619999170303345},{"id":"https://openalex.org/C195780805","wikidata":"https://www.wikidata.org/wiki/Q1535986","display_name":"Metrics","level":5,"score":0.3896999955177307},{"id":"https://openalex.org/C123403432","wikidata":"https://www.wikidata.org/wiki/Q654068","display_name":"Visibility","level":2,"score":0.3864000141620636},{"id":"https://openalex.org/C115443555","wikidata":"https://www.wikidata.org/wiki/Q5367790","display_name":"Equal-cost multi-path routing","level":5,"score":0.3628999888896942},{"id":"https://openalex.org/C89305328","wikidata":"https://www.wikidata.org/wiki/Q1755411","display_name":"Link-state routing protocol","level":4,"score":0.3483000099658966},{"id":"https://openalex.org/C185798385","wikidata":"https://www.wikidata.org/wiki/Q1161707","display_name":"Benchmark (surveying)","level":2,"score":0.30219998955726624},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.27559998631477356},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.267300009727478},{"id":"https://openalex.org/C50558702","wikidata":"https://www.wikidata.org/wiki/Q5535067","display_name":"Geographic routing","level":5,"score":0.25690001249313354},{"id":"https://openalex.org/C151201525","wikidata":"https://www.wikidata.org/wiki/Q177239","display_name":"Limit (mathematics)","level":2,"score":0.2533999979496002},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.25130000710487366}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.48550/arxiv.2604.07030","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2604.07030","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":"Preprint"}],"best_oa_location":{"id":"doi:10.48550/arxiv.2604.07030","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2604.07030","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":false,"raw_source_name":null,"raw_type":"Preprint"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Sparse":[0],"Mixture-of-Experts":[1],"(MoE)":[2],"architectures":[3],"are":[4],"increasingly":[5],"popular":[6],"for":[7,127],"frontier":[8],"large":[9,72],"language":[10],"models":[11,173],"(LLM)":[12],"but":[13],"they":[14],"introduce":[15],"training":[16],"challenges":[17],"due":[18,46],"to":[19,32,36,47,172],"routing":[20,55,91,117,147],"complexity.":[21],"Fully":[22],"leveraging":[23],"parameters":[24],"of":[25,49,68,133,140],"an":[26],"MoE":[27,81,146],"model":[28],"requires":[29],"all":[30],"experts":[31],"be":[33],"well-trained":[34],"and":[35,149],"specialize":[37],"in":[38],"non-redundant":[39],"ways.":[40],"Assessing":[41],"this,":[42],"however,":[43],"is":[44,64,154],"complicated":[45],"lack":[48],"established":[50],"metrics":[51],"and,":[52],"importantly,":[53],"many":[54],"techniques":[56],"exhibit":[57],"similar":[58],"performance":[59],"at":[60,71,93],"smaller":[61],"sizes,":[62],"which":[63],"often":[65],"not":[66],"reflective":[67],"their":[69],"behavior":[70],"scale.":[73],"To":[74,136],"address":[75],"this":[76,169],"challenge,":[77],"we":[78,143],"propose":[79],"the":[80,138,141,155],"Routing":[82],"Testbed,":[83],"a":[84,103,111,123],"setup":[85],"that":[86,114,151,158,168],"gives":[87],"clearer":[88],"visibility":[89],"into":[90],"dynamics":[92],"small":[94],"scale":[95],"while":[96,161],"using":[97],"realistic":[98],"data.":[99],"The":[100],"testbed":[101],"pairs":[102],"data":[104],"mix":[105],"with":[106,110],"clearly":[107],"distinguishable":[108],"domains":[109],"reference":[112],"router":[113],"prescribes":[115],"ideal":[116],"based":[118],"on":[119],"these":[120],"domains,":[121],"providing":[122],"well-defined":[124],"upper":[125],"bound":[126],"comparison.":[128],"This":[129],"enables":[130],"quantifiable":[131],"measurement":[132],"expert":[134,164],"specialization.":[135],"demonstrate":[137],"value":[139],"testbed,":[142],"compare":[144],"various":[145],"approaches":[148],"show":[150],"balancing":[152],"scope":[153],"crucial":[156],"factor":[157],"allows":[159],"specialization":[160],"maintaining":[162],"high":[163],"utilization.":[165],"We":[166],"confirm":[167],"observation":[170],"generalizes":[171],"35x":[174],"larger.":[175]},"counts_by_year":[],"updated_date":"2026-07-01T06:00:48.157686","created_date":"2026-04-10T00:00:00"}