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Andreas Vlachidis

dblp:118/0928 · DBLP profile ↗
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4ranked-venue papers
1as first author
3since 2021 · last 2025
0000-0003-0986-4430ORCID · verified

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 3 · 3 since 2021Databases, data management, data science and information retrieval · 1 · 1 first-authorGraphics, computer vision, multimedia, augmented reality and games · 1 · 1 since 2021Theory of computation · 1 · 1 since 2021

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Artificial intelligence
1 paper
Trustworthy machine learning · 50% Language models and text generation · 50%

Topics — the 4 heaviest of 4, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Natural language and speech › Language models and text generation
alignment
0.912025
Measuring Error Alignment for Decision-Making Systems · AAAI 2025
Natural language and speech › Language models and text generation › alignment
behavioral alignment
0.912025
Measuring Error Alignment for Decision-Making Systems · AAAI 2025
Machine learning › Trustworthy machine learning
fairness
0.912025
Measuring Error Alignment for Decision-Making Systems · AAAI 2025
Machine learning › Trustworthy machine learning
interpretability
0.912025
Measuring Error Alignment for Decision-Making Systems · AAAI 2025

Methods — techniques the papers use, named apart from their topics

representational alignment metrics · 0.9misclassification agreement · 0.9
YearPublicationVenuePosition
2025 Measuring Error Alignment for Decision-Making Systems
abstract
Given that AI systems are set to play a pivotal role in future decision-making processes, their trustworthiness and reliability are of critical concern. Due to their scale and complexity, modern AI systems resist direct interpretation, and alternative ways are needed to establish trust in those systems, and determine how well they align with human values. We argue that good measures of the information processing similarities between AI and humans, may be able to achieve these same ends. While Representational alignment (RA) approaches measure similarity between the internal states of two systems, the associated data can be expensive and difficult to collect for human systems. In contrast, Behavioural alignment (BA) comparisons are cheaper and easier, but questions remain as to their sensitivity and reliability. We propose two new behavioural alignment metrics misclassification agreement which measures the similarity between the errors of two systems on the same instances, and class-level error similarity which measures the similarity between the error distributions of two systems. We show that our metrics correlate well with RA metrics, and provide complementary information to another BA metric, within a range of domains, and set the scene for a new approach to value alignment.
Binxia Xu, Antonis Bikakis, Daniel F. O. Onah, Andreas Vlachidis, Luke Dickens
AAAI4
2024 Context Helps: Integrating Context Information with Videos in a Graph-Based HAR Framework
Binxia Xu, Antonis Bikakis, Daniel F. O. Onah, Andreas Vlachidis, Luke Dickens
NeSy (1)4
2022 Natural language processing for under-resourced languages: Developing a Welsh natural language toolkit
Daniel Cunliffe, Andreas Vlachidis, Douglas Tudhope
Comput. Speech Lang.2
2016 A knowledge-based approach to Information Extraction for semantic interoperability in the archaeology domain
abstract
The article presents a method for automatic semantic indexing of archaeological grey‐literature reports using empirical (rule‐based) Information Extraction techniques in combination with domain‐specific knowledge organization systems. The semantic annotation system (OPTIMA) performs the tasks of Named Entity Recognition, Relation Extraction, Negation Detection, and Word‐Sense Disambiguation using hand‐crafted rules and terminological resources for associating contextual abstractions with classes of the standard ontology CIDOC Conceptual Reference Model (CRM) for cultural heritage and its archaeological extension, CRM‐EH. Relation Extraction (RE) performance benefits from a syntactic‐based definition of RE patterns derived from domain oriented corpus analysis. The evaluation also shows clear benefit in the use of assistive natural language processing (NLP) modules relating to Word‐Sense Disambiguation, Negation Detection, and Noun Phrase Validation, together with controlled thesaurus expansion. The semantic indexing results demonstrate the capacity of rule‐based Information Extraction techniques to deliver interoperable semantic abstractions (semantic annotations) with respect to the CIDOC CRM and archaeological thesauri. Major contributions include recognition of relevant entities using shallow parsing NLP techniques driven by a complimentary use of ontological and terminological domain resources and empirical derivation of context‐driven RE rules for the recognition of semantic relationships from phrases of unstructured text.
Andreas Vlachidis, Douglas Tudhope
J. Assoc. Inf. Sci. Technol.1