Absent ties in social networks, their treatments, and blockmodeling outcomes

Žnidaršič, Anja (author), Doreian, Patrick (author), Ferligoj, Anuška (author)

An absent tie is one for which we have no information regarding its nature. Absent ties for a network is a set of such ties. This lack of information can be present anywhere in network data and has the potential to compromise the results of all network analytic tools. To assess this impact, we used real networks and based simulations on them by introducing varying amounts of absent ties. They were treated with four treatments of absent ties. Blockmodeling, using structural equivalence, was applied to the known networks and then to every treated network. The results were compared. The amount of absent ties, their treatments, the block structure of a network, and the level of reciprocity all have an effect of the adequacy of the results of blockmodeling. Reconstruction combined with imputation based on modal values was the best overall treatment. However, treatments of absent ties can work for some networks but not others and we recommend treatments of absent ties based on the form of networks.

• Language: English
• Keywords: socialna omrežja, bločno modeliranje, manjkajoče povezave, social network, blockmodeling, absent ties
• Work type: Not categorized
• Typology: 1.01 - Original Scientific Article
• Organization: FDV - Faculty of Social Sciences
• Year: 2012
• Number of pages: Str. 119-138
• Numbering: Vol. 9, no. 2
• PID: 20.500.12556/RUL-87945
• UDC: 303
• ISSN on article: 1854-0023
• COBISS.SI-ID: 7094291
• Publication date in RUL: 04.01.2017

Record is a part of a journal

• Title: Advances in methodology and statistics
• Shortened title: Metodol. zv.
• Publisher: Fakulteta za družbene vede
• ISSN: 1854-0023
• COBISS.SI-ID: 215795712

Secondary language

• Language: Unknown
• Keywords: social network, blockmodeling, absent ties