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Xenia Miscouridou

4 accepted papers

2025

Concept Reachability in Diffusion Models: Beyond Dataset Constraints

ICML 2025poster

Despite significant advances in quality and complexity of the generations in text-to-image models, *prompting* does not always lead to the desired outputs. Controlling model behaviour by directly *steering* intermediate model activations has emerged as a viable alternative allowing to *reach* concep…

2024

Exciting Mood Changes: A Time-aware Hierarchical Transformer for Change Detection Modelling

ACL 2024findings

Through the rise of social media platforms, longitudinal language modelling has received much attention over the latest years, especially in downstream tasks such as mental health monitoring of individuals where modelling linguistic content in a temporal fashion is crucial. A key limitation in exist…

Cited by 0SourcePDFScholar
2021

Gaussian process nowcasting: application to COVID-19 mortality reporting

UAI 2021poster

Updating observations of a signal due to the delays in the measurement process is a common problem in signal processing, with prominent examples in a wide range of fields. An important example of this problem is the nowcasting of COVID-19 mortality: given a stream of reported counts of daily deaths,…

2018

Modelling sparsity, heterogeneity, reciprocity and community structure in temporal interaction data

NeurIPS 2018poster

We propose a novel class of network models for temporal dyadic interaction data. Our objective is to capture important features often observed in social interactions: sparsity, degree heterogeneity, community structure and reciprocity. We use mutually-exciting Hawkes processes to model the interacti…