Lectures / Seminars

Agents and Expectations

This work discusses the role that expectations have in agent reasoning, and focuses on previous work on modelling and monitoring expectations with a complex temporal structure, and its application to expectation monitoring in virtual worlds. It also presents a proposal for a new extension of this work by integrating it with the event calculus to simplify the definition of institutions with actions that create expectations.

A 3D Perception-based Robotic Manipulation System for Automated Truck Unloading

In this talk I will present an autonomous robotic manipulation system that uses 3D vision processing algorithms to locate and unload cardboard boxes from floor-loaded shipping containers or semi-truck trailers. A key novel aspect of this system is the proposed 3D box detection algorithm as well as multiple box manipulation (or gripping) strategies that can be intelligently determined on the fly right after the box has been detected.

Semantics for disjunctive logic programs

In this talk I will present the main results of my PhD thesis. I will present different approaches to semantics for four logic programming languages, including model-theoretic and game semantics, with emphasis on how to deal with disjunctive logic programs, i.e., programs with rules that allow for disjunctions to appear in their heads.

PREFiguRE: a Performance, Power, and Reliability Framework for Disk Drives

Low disk drive utilization suggests that placing the drive into a power saving mode during idle times may decrease power consumption. I will present PREFiguRE, a robust framework that aims at harvesting future idle intervals for power savings while meeting strict quality constraints.

Multi-granular Sliding Windows over Data Streams

Continuous queries over nonterminating data streams usually specify windows in order to obtain an evolving --yet bounded-- set of tuples and thus provide timely and incremental results. In this talk, we introduce a multi-level sliding window operator that concurrently spans overlapping time periods, essentially providing at each granularity a varying, but always finite portion of the most recent stream items. Taking advantage of its properties, we suggest a suitable data structure that can efficiently maintain tuples qualifying for each granular level.

Blocking Techniques for Web-Scale Entity Resolution

Entity Resolution constitutes one of the cornerstone tasks for the integration of overlapping information sources. Due to its quadratic complexity, a bulk of research has focused on improving its efficiency so that it can be applied to Web Data collections, which are inherently voluminous and highly heterogeneous. The most common approach for this purpose is blocking, which clusters similar entities into blocks so that the pair-wise comparisons are restricted to the entities contained within each block.

Event Recognition Under Uncertainty and Incomplete Data

Symbolic event recognition systems have been successfully applied to a variety of application domains, extracting useful information in the form of events, allowing experts or other systems to monitor and respond when significant events are recognised. In a typical event recognition application, however, these systems often have to deal with a significant amount of uncertainty. In this thesis, we address the issue of uncertainty in logic-based event recognition by extending the Event Calculus with probabilistic reasoning.

Distributional Semantic Models for Affective Text Analysis and Grammar Induction

We present our recent work on language-agnostic algorithms for the construction of distributed semantic models (DSMs) using web-harvested corpora. A corpus is created from web document snippets and the relevant semantic similarity statistics are encoded in a semantic network. We propose the notion of semantic neighborhoods that are defined using co-occurrence or context similarity features. Three neighborhood-based similarity metrics are proposed, motivated by the hypotheses of attributional and maximum sense similarity.

Με μεγάλη επιτυχία ολοκληρώθηκε το δωρεάν σεμινάριο 7 διαλέξεων που διοργάνωσε το Telecoms Lab - Net Media Lab με τίτλο «Εισαγωγή στα Εργαλεία Αξιολόγησης και Προγράμματα Παρέμβασης των Μαθητών με Ειδικές Εκπαιδευτικές Ανάγκες»

Location

N.C.S.R. "Demokritos" - Main Auditorium
Greece

Με μεγάλη επιτυχία ολοκληρώθηκε το δωρεάν σεμινάριο 7 διαλέξεων που διοργάνωσε το Telecoms Lab - Net Media Lab του Ινστιτούτου Πληροφορικής και Τηλεπικοινωνιών του Ε.Κ.Ε.Φ.Ε. «Δημόκριτος» με τίτλο «Εισαγωγή στα Εργαλεία Αξιολόγησης και Προγράμματα Παρέμβασης των Μαθητών με Ειδικές Εκπαιδευτικές Ανάγκες» το οποίο πραγματοποιήθηκε σε 4 sessions το Σάββατο 20 Σεπτεμβρίου και την Κυριακή 21 Σεπτεμβρίου 2014 και ώρες 09:30-13:30 και 14:30-18:30 αντίστοιχα στο Κεντρικό Αμφιθέατρο του Ε.Κ.Ε.Φ.Ε. «Δημόκριτος».

Telecoms Lab - Net Media Lab announces a new round of seminars for the academic year 2014-2015

Telecoms Lab - Net Media Lab announces a new round of seminars for the academic year 2014-2015 entitled "New Technologies & Modern Approaches in Special Education - Evaluation Tools and Intervention Programs for Students with Special Educational Needs".

The seminars will kick-off with a free seminar, that will take place over the weekend of 20 & 21 September 2014 at the Main Auditorium of N.C.S.R. "Demokritos".

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