# Lectures / Seminars

## Free Seminar entitled "Introduction to Vocational Guidance with the use of ICTs" with the participation of 1200 people at the main auditorium of N.C.S.R. "Demokritos"

The Telecoms Lab-Net Media Lab organized a free seminar entitled "Introduction to Vocational Guidance with the use of ICTs" with the participation of 1200 people at the main auditorium of N.C.S.R. "Demokritos" during the weekend of 22 & 23 February 2014. The seminar which consisted of seven lectures, took place three times over the weekend.

The seminar was addressed to educators of all fields, psychologists, parents as well as students from all relative faculties.

## Incremental learning of event definitions with Inductive Logic Programming

Εvent Recognition systems rely on properly engineered knowledge bases of event definitions to infer occurrences of events in time. The manual development of such knowledge is a tedious and error-prone task, thus event-based applications may benefit from automated knowledge construction techniques, such as Inductive Logic Programming (ILP), which combines machine learning with the declarative and formal semantics of First-Order Logic.

## Building Bilingual Multiword Lexicons from Parallel Text

Multiword expressions resources are important for both rule-based and statistical machine translation. We present a method to construct bilingual multiword lexicons from SMT phrase tables. The lexicons developed in the grammar formalism GF, which ensures syntactical correctness and generates all the bending forms of the entries. The resources created in this manner can be used to enrich either GF grammars or SMT phrase tables.

## Extensional Higher-Order Logic Programming

The two prominent declarative paradigms, namely logic and functional programming differ radically in an important aspect: logic programming is traditionally first-order while functional programming encourages and promotes the use of higher-order functions and constructs.

We consider an extensional higher-order logic programming language where predicates can be passed as parameters. Every higher-order logic program has a unique minimum Herbrand model. In this semantics program predicates denote sets of ordered tuples and two predicates are equal iff they are equal as sets.

## Αλγόριθμοι εμπιστοσύνης στο σύστημα κοινωνικής δικτύωσης QSN

Το QSN αποτελεί ένα σύστημα κοινωνικής δικτύωσης που δίνει την δυνατότητα στους χρήστες του να εκφράζουν με δομημένο τρόπο τις απόψεις τους για διαδυκτακές πηγές. Το σύστημα αναλαμβάνει την συνάθροιση των διαφορετικών απόψεων που εκφράζονται, παράγοντας τελικώς ετικέτες χαρακτηρισμού περιεχομένου για κάθε χαρακτηρισμένη διαδικτυακή πηγή. Σκοπός της παρούσας εργασίας ήταν η διερεύνηση των αλγόριθμων εμπιστοσύνης, και η αξιοποίησή τους στο σύστημα QSN με στόχο την βελτίωση της ποιότητας των παραγόμενων ετικετών.

## Graph-theoretic conflict resolution with applications in wireless networks and protein docking

We consider graphs with nodes representing decisions and edges representing conflicts among two decisions. Nodes are further assigned weights indicating the reward of the corresponding decision. In such a graph, the Maximum Weighted Independent Set (MWIS) problem is to select a set of nodes, no two of which are adjacent, with the largest possible total weight. This is equivalent to selecting a "conflict-free" set of decisions with maximal reward. MWIS is NP-hard.

## Semi-automatic road extraction combining Particle Filtering and Geographic Information Systems

The updating of road network databases is crucial to many Geographic Information System (GIS) applications like navigation, urban planning, as well as emergency and disaster management. The development of a robust methodology for automatic or semi-automatic road extraction and change detection as well as “discovery of paths” (in military theater, desert areas etc.) is essential. Such a methodology has to provide accurate and up-to-date results albeit using noisy and infrequent sensor data.

## Free Online Webinars entitled "Introduction to Special Education and ICTs" with the participation of 7500 people

The Telecoms Lab-Net Media Lab organized two Free Online Webinars entitled "Introduction to Special Education and ICTs" with the participation of 7500 people. The first one took place on 1-4 July 2013 and attracted 4700 people, while the second one took place on 5 & 6 September 2013 and attracted 2800 people.

## Free Seminar entitled "Introduction to Special Education and ICTs" with the participation of 2000 people at the main auditorium of N.C.S.R. "Demokritos"

The Telecoms Lab-Net Media Lab organized a free seminar entitled "Introduction to Special Education and ICTs" with the participation of 2000 people at the main auditorium of N.C.S.R. "Demokritos" during the weekend of 14 & 15 September 2013. The seminar which consisted of seven lectures, took place four times over the weekend.

The seminar was addressed to educators of all fields, psychologists, parents as well as students from all relative faculties.

## 8-19 July: IIT is actively present at this year's Summer School of NCSR Demokritos

Continuing a long tradition, the 48th orientation and information Summer School for graduates/post-graduates from universities and technological institutions, was organized with success, between 8 and 19 july, at NCSR Demokritos. During the summer school, members of IIT gave some very interesting lectures.