This event feed aggregates content from the Research Events feeds from the Helsinki Institute for Information Technology HIIT, Aalto University Department of Computer Science, and the University of Helsinki Department of Computer Science.
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Tensor Models
Prof. Taylan Cemgil, Bogazici University, Turkey
Abstract:Algorithms for decompositions of matrices and tensors are of central importance in machine learning, signal processing and information retrieval. In the recent years tensor methods for computing decompositions of multiway arrays have gained significant popularity. Notable extensions include coupled factorizations where multiple observed tensors are factorized collectively; such methods are in particular useful...
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12.09.2014 13:15–14:00
Guest lecture
Exactum, C222Recent compressed suffix trees targeted to highly repetitive text collectionsreach excellent compression performance, but operation times are in the order ofmilliseconds. We design a new suffix tree representation for this scenariothat still achieves very low space usage, only slightly larger than the bestprevious one, but supports the operations within microseconds. This... -
11.09.2014 12:15–13:00
Guest lecture
B119Assistant Professor Julia Stoyanovich (Drexel University, USA) will give a guest lecture titled "Big data according to T.S. Eliot or How fine-grained provenance will save the world" on Thursday, September 11 at 12:15 in Exactum B119. Welcome!
Abstract
In this talk I will present a novel provenance framework that marries database-style and workflow-style provenance. In current workflow management systems it is assumed...
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11.09.2014 10:15–10:45
Lecture
C220Apulaisprofessori Julia Stoyanovich (Drexel University, USA) on hakenut tietojenkäsittelytieteen (erityisesti tiedonhallinnan) apulaisprofessorin tehtävää ja antaa julkisen opetusnäytteensä aiheesta "Principles of data management: from relational systems to big data" torstaina 11.9.2014 klo 10:15 salissa C220. Tervetuloa!
Abstract
In this talk I will discuss the fundamental principles that drive...
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Information Discovery in Scientific Workflow Repositories
Prof. Julia Stoyanovich, Drexel University, USA
Abstract:Data-intensive workflows are gaining popularity in the scientific community, and workflow repositories are emerging in support of sharing and reuse. As workflows become more widely used, repositories grow in size, making information discovery an interesting challenge. In this talk I will focus on repositories of complex hierarchical workflows whose component modules are...
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08.09.2014 16:15–17:15
Guest lecture
Auditorium A111, Exactum Building, Gustaf Hällströmin katu 2b, HelsinkiThe next lecture in the Helsinki Distinguished Lecture Series on Future Information Technology will be given by Prof. Wojciech Szpankowski from Purdue University. The lecture will be followed by cocktails.
The event is free of charge and open to all interested in the leading research in information technology...
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08.09.2014 16:15–17:15
Guest lecture
Auditorium A111, Exactum Building, Gustaf Hällströmin katu 2b, HelsinkiThe next...
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Network Reconstruction with Asynchronously Updated Ising Models
Dr. Hongli Zeng, Aalto University
Abstract:The talk will focus on connectivity inference with asynchronously updated Ising models. We have developed two sets of learning rules for the couplings with the tools of statistical physics. They are approximate and exact versions respectively. The approximate ones are based on different levels of mean-field approximations, while the exact ones are based on maximization of the...
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08.09.2014 13:15–14:00
HIIT seminar
Aalto University, Computer Science Building, lecture hall T3Abstract:
The talk will focus on connectivity inference with asynchronously
updated Ising models. We have developed two sets of learning rules for
the couplings with the tools of statistical physics. They are
approximate and exact versions respectively. The approximate ones are
based on different levels of mean-field approximations, while the... -
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