Bio. I am a Postdoctoral Fellow in the Machine Learning Department at CMU, working with Tom Mitchell.
Before CMU,  I received a PhD in Computer Science from the Max-Planck-Institut für Informatik, Saarbrücken, Germany.
Prior to MPII, I obtained a Masters and BSc in Computer Science from the University of Cape Town, South Africa.

Research Interests. I am interested in Artificial Intelligence, particularly Natural Language Processing (NLP) and Inference for language understanding. My work, with co-authors, addresses the question of how to equip machines with the knowledge necessary to complete tasks in NLP and intelligent inference (ACL 2013, EMNLP 2012, VLDS 2012, WSDM 2011). Answering this question involves dealing with challenges in Information Extraction (IE) such as ambiguity at several levels (IEEE Data Engineering Bulletin 2012), as well as information veracity (ACL 2014).

I am also interested in knowledge maintenance; how to grow and effectively use knowledge acquired with IE methods. Coverage of knowledge bases (KB) can be lacking especially in tasks where deep, specialized knowledge is required: this is where real-time knowledge harvesting comes in (AKBC 2012). This constitutes acquiring knowledge on-the-fly when KB lookups fail.

I am not South African