Search Results for author: ros

Found 36 papers, 1 papers with code

Towards Visual Dialog for Radiology

no code implementations WS 2020 Olga Kovaleva, Chaitanya Shivade, Satyan Kashyap, a, Karina Kanjaria, Joy Wu, Deddeh Ballah, Adam Coy, Alex Karargyris, ros, Yufan Guo, David Beymer Beymer, Anna Rumshisky, V Mukherjee, ana Mukherjee

Using MIMIC-CXR, an openly available database of chest X-ray images, we construct both a synthetic and a real-world dataset and provide baseline scores achieved by state-of-the-art models.

Question Answering Visual Dialog +1

NTUA-ISLab at SemEval-2019 Task 9: Mining Suggestions in the wild

no code implementations SEMEVAL 2019 Rol Potamias, os Alex, Alex Neofytou, ros, Georgios Siolas

As online customer forums and product comparison sites increase their societal influence, users are actively expressing their opinions and posting their recommendations on their fellow customers online.

NTUA-ISLab at SemEval-2019 Task 3: Determining emotions in contextual conversations with deep learning

no code implementations SEMEVAL 2019 Rol Potamias, os Alex, ros, Georgios Siolas

Sentiment analysis (SA) in texts is a well-studied Natural Language Processing task, which in nowadays gains popularity due to the explosion of social media, and the subsequent accumulation of huge amounts of related data.

Sentiment Analysis

Neural Activation Semantic Models: Computational lexical semantic models of localized neural activations

1 code implementation COLING 2018 Nikos Athanasiou, Elias Iosif, Alex Potamianos, ros

Neural activation models have been proposed in the literature that use a set of example words for which fMRI measurements are available in order to find a mapping between word semantics and localized neural activations.

Dimensionality Reduction Semantic Similarity +2

Spoken Dialogue for Information Navigation

no code implementations WS 2018 Alex Papangelis, ros, Panagiotis Papadakos, Yannis Stylianou, Yannis Tzitzikas

Aiming to expand the current research paradigm for training conversational AI agents that can address real-world challenges, we take a step away from traditional slot-filling goal-oriented spoken dialogue systems (SDS) and model the dialogue in a way that allows users to be more expressive in describing their needs.

Information Retrieval Language understanding +2

Structured Generative Models of Continuous Features for Word Sense Induction

no code implementations COLING 2016 Alex Komninos, ros, Man, Suresh har

We propose a structured generative latent variable model that integrates information from multiple contextual representations for Word Sense Induction.

Hierarchical structure Word Embeddings +1

Cognitively Motivated Distributional Representations of Meaning

no code implementations LREC 2016 Elias Iosif, Spiros Georgiladakis, Alex Potamianos, ros

Although meaning is at the core of human cognition, state-of-the-art distributional semantic models (DSMs) are often agnostic to the findings in the area of semantic cognition.

Semantic Similarity Semantic Textual Similarity

Crossmodal Network-Based Distributional Semantic Models

no code implementations LREC 2016 Elias Iosif, Alex Potamianos, ros

Despite the recent success of distributional semantic models (DSMs) in various semantic tasks they remain disconnected with real-world perceptual cues since they typically rely on linguistic features.

Affective Lexicon Creation for the Greek Language

no code implementations LREC 2016 Elisavet Palogiannidi, Polychronis Koutsakis, Elias Iosif, Alex Potamianos, ros

Starting from the English affective lexicon ANEW (Bradley and Lang, 1999a) we have created the first Greek affective lexicon.

General Classification

Word Semantic Similarity for Morphologically Rich Languages

no code implementations LREC 2014 Kalliopi Zervanou, Elias Iosif, Alex Potamianos, ros

In this work, we investigate the role of morphology on the performance of semantic similarity for morphologically rich languages, such as German and Greek.

Semantic Similarity Semantic Textual Similarity

Evaluation of Online Dialogue Policy Learning Techniques

no code implementations LREC 2012 Alex Papangelis, ros, Vangelis Karkaletsis, Fillia Makedon

The number of applied Dialogue Systems is ever increasing in several service providing and other applications as a way to efficiently and inexpensively serve large numbers of customers.

Dialogue Management Slot Filling +1

Associative and Semantic Features Extracted From Web-Harvested Corpora

no code implementations LREC 2012 Elias Iosif, Maria Giannoudaki, Eric Fosler-Lussier, Alex Potamianos, ros

We address the problem of automatic classification of associative and semantic relations between words, and particularly those that hold between nouns.

Classification General Classification +5

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