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D. O'Callaghan

8 papers hereh-index 111k citations11 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • first author6
  • middle author2

Across the 8 of 8 papers where every author was matched, so the position is known.

fields
  • cs.SI7
  • cs.LG1
same name
  • D. O'Callaghan — 3 papers, h 11

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity
20122014
most citedHow Many Topics? Stability Analysis for Topic Models

22 citations · 67 across the 7 of their papers we have counts for

collaborators
Showing 2012Show all

4 papers · 1 filter

cs.SI2012★ 14 cited

Identifying Topical Twitter Communities via User List Aggregation

Derek Greene, Derek O'Callaghan, Pádraig Cunningham

A particular challenge in the area of social media analysis is how to find communities within a larger network of social interactions. Here a community may be a group of microblogg…

cs.SI2012★ 3 cited

An Analysis of Interactions Within and Between Extreme Right Communities in Social Media

Derek O'Callaghan, Derek Greene, Maura Conway +2

Many extreme right groups have had an online presence for some time through the use of dedicated websites. This has been accompanied by increased activity in social media platforms…

cs.SI2012★ 11 cited

Identifying Discriminating Network Motifs in YouTube Spam

Derek O'Callaghan, Martin Harrigan, Joe Carthy +1

Like other social media websites, YouTube is not immune from the attention of spammers. In particular, evidence can be found of attempts to attract users to malicious third-party w…

cs.SI2012

Network Analysis of Recurring YouTube Spam Campaigns

Derek O'Callaghan, Martin Harrigan, Joe Carthy +1

As the popularity of content sharing websites such as YouTube and Flickr has increased, they have become targets for spam, phishing and the distribution of malware. On YouTube, the…

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