The lunch starts at 12:00, and the talk will start around 12:20.
NB: Wednesday BigInsight Lunches are open to staff and students from any of the BigInsight partners, including UiO, but not to others.
Speaker: Michael Kampffmeyer, Postdoc, Machine learning group, University of Tromsø
Location: Spiseriet at Norsk Regnesentral.
Title: Rethinking Knowledge Graph Propagation for Zero-Shot Learning
Abstract: Graph convolutional neural networks have recently shown great potential for the task of zero-shot learning. These models are highly sample efficient as related concepts in the graph structure share statistical strength allowing generalization to new classes when faced with a lack of data. However, multi-layer architectures, which are required to propagate knowledge to distant nodes in the graph, dilute the knowledge by performing extensive Laplacian smoothing at each layer and thereby consequently decrease performance. In order to still enjoy the benefit brought by the graph structure while preventing dilution of knowledge from distant nodes, we propose a Dense Graph Propagation (DGP) module with carefully designed direct links among distant nodes. DGP allows us to exploit the hierarchical graph structure of the knowledge graph through additional connections. These connections are added based on a node's relationship to its ancestors and descendants. A weighting scheme is further used to weigh their contribution depending on the distance to the node to improve information propagation in the graph. Combined with finetuning of the representations in a two-stage training approach our method outperforms state-of-the-art zero-shot learning approaches.
Speaker: Dr. Mark Robinson, Associate Professor of Statistical Genomics, Institute of Molecular Life Sciences, University of Zurich, Switzerland
Workshop: TOWARDS IN SILICO-GUIDED CLINICAL TRIALS IN CANCER
Oslo, 15-16 May 2019 at Scandic Holmenkollen Hotel
Speaker: Dr. Pekka Marttinen, Assistant Professor, Helsinki Institute for Information Technology HIIT, Aalto University, Finland, will present his current research.
Location: Nye Auditorium 13, Domus Medica
Speaker: Dr. Anne-Laure Boulesteix, Professor, Institute of Medical Informatics, Biometry and Epidemiology, Fafulty of Medicine, LMU Munich, Germany
Location: Domus Medica, Nye Auditorium 13
THURSDAY Biostatistics Seminar (Joint Sven Furberg Seminar): Dr. Elana Fertig and Dr. Francesca Buffa
Speakers: Dr. Elana Fertig, Associate Professor of Oncology and Applied Mathematics and Statistics Assistant Director of the Sydney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, USA, and
Dr. Francesca Buffa, Associate Professor, Computational Biology and Integrative Genomics, Department of Oncology, CRUK/MRC Institute, University of Oxford
Location: Hagen 1+2 room, Forskningsparken
Speaker: Eleni Rosalina Andrinopoulou, Erasmus University Medical Center of Rotterdam (NED)
Location: Math department, Niels Henrik Abels hus, 8th floor
Speaker: Dr. Céline Vallot
Location: Kristen Nygaards hus: Store auditorium