Singapore

Deep learning models offer state-of-the-art performance but
their inherent opacity is a major barrier to adoption in
high-stakes domains. In contrast, Takagi-Sugeno-Kang (TSK)
fuzzy systems provide rule-based transparency but often
lack the predictive power of deep networks. My PhD research
addresses this critical trade-off by developing the
Fuzzy-Modulated Linear Consequents (FMLC) framework, a
novel hybrid architecture that synergizes these two
paradigms. The core of FMLC is a deep neural network that
processes fuzzified input features to generate
context-dependent &quot;modulators&quot;. These modulators
dynamically parameterize a TSK-style linear consequent
layer, creating a model that is both highly performant and
inherently interpretable. My latest work, Learnable-FMLC
(L-FMLC), advances this by introducing a regularized,
adaptive fuzzification layer that autonomously learns the
optimal fuzzy partitions from data, and a two-stage rule
distillation framework to ensure interpretability remains
scalable in high-dimensional problems. This research
delivers a validated, theoretically-grounded, and scalable
framework, contributing a significant step towards
transparent and trustworthy AI.

AAAI 2026

Fusing Deep Learning and Fuzzy Logic: A Framework for Adaptive and Scalable Interpretability

ml: deep neural architectures and foundation models

ml: deep learning algorithms

cms: (computational) cognitive architectures

ml: deep learning theory

AIAI 2020 (16th International Conference on Artificial Intelligence Applications and Innovations) should be held in Halkidiki, Greece. Due to current Covid-19 situation the conference will be held virtually. Underline will host a repository of video talks and preserve them for the future. Videos will be released on Underline one day after the conference.

AIAI 2020

Deep learning models offer state-of-the-art performance but
their inherent opacity is a major barrier to adoption in
high-stakes domains. In contrast, Takagi-Sugeno-Kang (TSK)
fuzzy systems provide rule-based transparency but often
lack the predictive power of deep networks. My PhD research
addresses this critical trade-off by developing the
Fuzzy-Modulated Linear Consequents (FMLC) framework, a
novel hybrid architecture that synergizes these two
paradigms. The core of FMLC is a deep neural network that
processes fuzzified input features to generate
context-dependent "modulators". These modulators
dynamically parameterize a TSK-style linear consequent
layer, creating a model that is both highly performant and
inherently interpretable. My latest work, Learnable-FMLC
(L-FMLC), advances this by introducing a regularized,
adaptive fuzzification layer that autonomously learns the
optimal fuzzy partitions from data, and a two-stage rule
distillation framework to ensure interpretability remains
scalable in high-dimensional problems. This research
delivers a validated, theoretically-grounded, and scalable
framework, contributing a significant step towards
transparent and trustworthy AI.

technical paper

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We are pleased to announce the Fortieth AAAI Conference on Artificial Intelligence (AAAI-26), which will be held in Singapore EXPO from January 20 to January 27, 2026.

Autonomous driving must cope with motion blur, low light,
and dynamic agents, where RGB frames and event cameras
offer complementary strengths. This thesis investigates how
to fuse them across the perception–reasoning–planning
pipeline. It introduces FlexEvent, a frequency-robust
detector with adaptive fusion and label-efficient training;
Talk2Event, the first benchmark for event–language
grounding with attribute-aware modeling; and the ongoing
EventChat, an event–frame VLM for perception, spatial
relations, and ego reasoning. Future work will extend this
framework with iterative perception and reinforcement
learning for long-horizon decision making. Together, these
efforts aim to deliver robust perception, interpretable
reasoning, and planning support through event–frame fusion.

Towards Robust and Interpretable Event–Frame Fusion for Autonomous Driving

Higher autonomy is an increasingly common goal in the
design of transportation systems for the cities of the
future. Recently, part of this autonomy in both rail and
maritime transport has come from the field of artificial
intelligence and machine learning, particularly for
perception tasks (detection and recognition of rail
signals, other vessels, or other elements in the vehicle
environment) using neural networks. Although AI-based
approaches have gained significant popularity in many
application fields due to their good performance, their
unpredictability and lack of formal guarantees regarding
their desired behavior present a major issue for the
deployment of such safety-critical systems in urban areas.
The goal of my PhD thesis is to design new formal methods
to analyze and ensure the safety of such AI-based
perception modules in autonomous vehicles. More
specifically, my PhD topic aims to formally evaluate the
safety of a recently introduced class of continuous AI
models which is neural ODE.

Formal Verification of Neural ODE for Safety Evaluation in Autonomous Vehicles

Causal discovery is the task of learning a causal model from a source of information. Traditionally, the community has focused on algorithms that infer causal models from observational and/or interventional data, while alternative approaches have been only marginally explored. The proposed work aims to contribute to the theoretical foundations connecting agent-based systems with causal modeling, and to identify conditions under which newly developed causal discovery algorithms can be applied to elicit causal knowledge from agents.

Eliciting Causal Knowledge from Agents

Learning from human feedback enables AI systems and robots
to learn policies that align with human intent. While
existing work has primarily examined learning from
demonstrations, corrections, and preferences in
single-agent settings, these ideas have yet to be fully
extended to multi-agent domains—where cooperation,
decentralization, and non-stationary dynamics demand new
methods. In this thesis summary, I highlight my current
work and outline future directions for multi-robot learning
from human feedback, offering deployment strategies that
align supervisor intent with robot teams in the real world.

Multi-Robot Learning from Human Feedback

Model development in AI is shaped by developer decisions.
While there is significant research on the opportunities
and risks of multiplicity, little attention has been paid
to how developer decisions impact multiplicity. My thesis
focuses on (a) introducing broader frameworks to better
situate and analyze developer decisions in AI, (b)
identifying theoretical connections to characterize the
influence of these decisions on multiplicity, and (c)
operationalizing these insights across various
applications, thus building responsible AI models with
multiplicity.

From Decisions to Multiplicity: Frameworks, Theories, and Applications

Explainable AI (XAI) seeks to answer the question: which
features of the data led a model to make its decision?
Existing approaches are either model-agnostic (e.g., LIME,
SHAP)—flexible but unstable—or logic-based (e.g.,
sufficient reasons,
knowledge compilation)—principled but often overly complex.
This work introduces a probabilistic relaxation of
sufficient reasons, termed probabilistic sufficient
reasons, which balances flexibility with theoretical
guarantees. We analyze
its computational properties, propose tractable subclasses,
and outline future directions for scalable algorithms and
applications.

On the Computational Tractability of Probabilistic Global and Local Sufficient Explanation

Achieving globally desirable outcomes in networked
multi-agent systems—such as high social welfare, stable
allocations, and widespread cooperation—is a fundamental
challenge in AI. This paper outlines a research agenda that
explores two complementary pathways to this goal. The first
is a top-down approach, where a central mechanism designer
proposes rules to guide strategic agents towards
theoretically optimal equilibria. The second is a bottom-up
approach, where desirable farsighted policies, like
cooperation in social dilemmas, emerge from the
decentralized interactions of agents via multi-agent
reinforcement learning. We argue that the integration of
these paths constitutes a promising frontier for creating
robust and adaptive multi-agent systems.

Designing Incentives for Networked Multi-agent Systems

Transformers have reshaped modern artificial intelligence, yet their theoretical foundations remain incomplete. This thesis investigates the approximation power and memory limitations of transformers. I combine tools from approximation theory and statistical learning theory to provide provable guarantees on expressivity, memorization capacity, and inherent architectural constraints. My contributions include the first rigorous proof of memory bottlenecks in prompt tuning and new results on the expressivity of transformers. The long-term goal of my doctoral research is to develop a principled theoretical framework that grounds the empirical behavior of large-scale transformer models in formal approximation-theoretic results.

Memorization and Expressivity in Transformers: A Learning-Theoretic Perspective

Explainability has emerged as a pillar of Trustworthy AI
for achieving safety in critical domains. However,
introducing explainability to boost transparency of
black-box AI systems can create unforeseen vulnerabilities.
Previous research has drawn attention to privacy leakage,
malicious or otherwise, that explainable interfaces can
cause thus leading to inadvertent identification of
individuals and/or exposure of sensitive personal
information. Privacy preservation methods used in response
to this leakage, are found to adversely affect utility of
the system such as the model accuracy and explanation
quality. The proposed thesis will examine the advancement
of Privacy Enhancing Technologies (PETs) in XAI keeping
users at the core of the design process. The main
objectives of the research are determining defenses for
privacy attacks, building interpretable algorithms for
private models and examining user requirements for privacy
preserving XAI. The research is expected to yield
characteristics of privacy preserving XAI, guidelines, and
recommendations for effectively building privacy compliant
XAI while considering the diverse needs of users. The
research outcomes will enable developers and researchers in
designing XAI that is safe for deployment and balances the
triad of privacy, explainability and utility.

Conceptualisation and Implementation of Human-centric Privacy Preserving Framework for Explainable AI

The rapid advancement of generative mod- els (Roy et al.
2023; Pal et al. 2024; Roy et al. 2024) has opened new
avenues for addressing critical challenges in computer
vision (Dhar et al. 2021; Fazlyab et al. 2023), such as
data scarcity, image quality enhancement, and person-
alization. Recent progress has concentrated on improving
the adaptability, efficiency, and quality of these models
to meet the growing demand for parameter-efficient
fine-tuning and adaptation of large vision-language and
generative mod- els (Roy et al. 2025b; Pramanick, Roy, and
Patel 2022). In this work, we begin by tackling the
challenges of resource- constrained learning (Roy et al.
2022). We then leverage powerful vision-language models to
address these issues in a parameter-efficient manner.
Additionally, we aim to en- hance state-of-the-art
generative models—specifically dif- fusion models—by
incorporating natural image priors (Roy et al. 2023). We
also explore joint concept merging through the lens of
low-rank adapter merging, applying it to content- style
personalization. Finally, we address the challenge of
zero-shot personalization of any object without requiring
additional training. We conclude by devising a frequency-
guided method for training-free multi-LoRA composition,
which is more appropriate for deployment on edge devices.

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Towards Robust and Interpretable Event–Frame Fusion for Autonomous Driving

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Hypotheses tests using non-asymptotic fuzzy estimators and fuzzy critical values

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