@inproceedings{Zimmermann_Euzenat:ISWC2006,
 author    = {Antoine Zimmermann and J\'er\^ome Euzenat},
 title     = {{T}hree {S}emantics for {D}istributed {S}ystems and their {R}elations with {A}lignment {C}omposition},
 year      = {2006},
 pages     = {16--29},
 booktitle = {{T}he {S}emantic {W}eb - {ISWC} 2006, 5th {I}nternational {S}emantic {W}eb {C}onference, {ISWC} 2006, {A}thens, {GA}, {USA}, {N}ovember 5-9, 2006, {P}roceedings},
 month     = nov,
 publisher = {Springer},
 editor    = {Isabel F. Cruz and Stefan Decker and Dean Allemang and Chris Preist and Daniel Schwabe and Peter Mika and Michael Uschold and Lora Aroyo},
 isbn      = {3-540-49029-9},
 series    = {{L}ecture {N}otes in {C}omputer {S}cience},
 volume    = {4273},
 language  = {en},
 url       = {http://iswc2006.semanticweb.org/items/Zimmermann2006jw.pdf},
 keywords  = {semantic web, ontology alignment composition},
 abstract  = {An ontology alignment explicitly describes the relations holding between two ontologies. A system composed of ontologies and alignments interconnecting them is herein called a distributed system. We give three different semantics of a distributed system, that do not interfere with the semantics of ontologies. Their advantages are compared with respect to allowing consistent merge of ontologies, managing heterogeneity and complying with an alignment composition operation. We show that only the first two variants, which differ from other proposed semantics, can offer a sound composition operation.}
}