**Vladimir Modrak \* and David Marton**

Department of Manufacturing Management, Faculty of Manufacturing Technologies in Presov, Technical University of Kosice, Bayerova 1, Presov 08001, Slovakia; E-Mail: david.marton@tuke.sk

**\*** Author to whom correspondence should be addressed; E-Mail: vladimir.modrak@tuke.sk; Tel.: +421-51-772-2828; Fax: +421-51-773-3453.

*Received: 29 August 2013; in revised form: 30 September 2013 / Accepted: 30 September 2013 / Published: 10 October 2013* 

**Abstract:** In this paper, we present a methodological framework for conceptual modeling of assembly supply chain (ASC) networks. Models of such ASC networks are divided into classes on the basis of the numbers of initial suppliers. We provide a brief overview of select literature on the topic of structural complexity in assembly systems. Subsequently, the so called Vertex degree index for measuring a structural complexity of ASC networks is applied. This measure, which is based on the Shannon entropy, is well suited for the given purpose. Finally, we outline a generic model of quantitative complexity scale for ASC Networks.

**Keywords:** structural complexity; numerical combination; vertex degree; class; networks
