I am Marta!

Doctor in Statistical Signal Processing & Machine Learning

High level experience in the development of statistical and machine learning models for better decision-making processes.

Published
Paper 1

Machine Learning Mitigants for Speech Based Cyber Risk (2021)

M Campi, G Peters, N Azzaoui, T Matsui

IEEE Access 9, 136831 - 136860

PhD Thesis
Paper 2

A Statistical Perspective of the Empirical Mode Decomposition (2022)

M Campi

UCL (University College London)

Published
Paper 3

Ataxic speech disorders and Parkinson’s disease diagnostics via stochastic embedding of empirical mode decomposition (2023)

M Campi, G Peters, D Toczydlowska

PLOS One 18 (4), e0284667

Published
Paper 4

Cervical vestibular evoked myogenic potentials in healthy children: Normative values for bone and air conduction (2023)

S Wiener-Vacherm, M Campi, P Boizeau, H Thai-Van

Frontiers in Neurology, Section Neuro-Otology 14

Published
Paper 5

Signature Isolation Forest (2024)

M Campi, G Staerman, GW Peters, T Matsui

arXiv preprint arXiv:2403.04405

AISTAT 2025

Published
Paper 6

Vestibular Impairment and Postural Development in Children With Bilateral Profound Hearing Loss (2024)

SR Wiener-Vacher, M Campi, S Caldani, H Thai-Van

JAMA Network Open 7 (5), e2412846-e2412846

Published
Paper 7

Shades of green: Unveiling the impact of municipal green bonds on the environment (2024)

M Campi, GW Peters, KA Richards

Franklin Open, 100113

Published
Paper 8

Standardised Hearing Loss Risk Profiles with State-Space Models (2025)

M Campi, GW Peters, P Morvan, M Buhl, H Thai-Van

In Preparation
Paper 9

Underlying Speech Processing Mechanisms of Auditory Neuropathy (2025)

M Campi, C Gaultier, G Gerenton, P Avan

Under Review
Paper 10

Beyond the Audiogram: Using PROMs and AI Modelling to Characterise Age- and Sex-Specific Hearing Loss Needs in a Nationwide Study (2025)

P Morvan, M Campi, GW Peters, H Thai-Van

Under Review
Paper 11

From Hearing Patterns to Functional Outcomes: Quantifying Audiometric Profiles for Precision Hearing Care (2025)

P Morvan, M Campi et al.

Under Review
Paper 12

Discrimination loss vs. SRT: A model-based approach towards harmonizing speech test interpretations (2025)

M Buhl, E Kludt, L Schell-Majoor, M Campi, P Avan

Under Review
Paper 13

Anatomy of Municipal Green Bond Yield Spreads (2025)

MH Sehatpour, M Campi, CS Nikitopoulos, GW Peters, KA Richards

Under Review
Paper 14

Quantifying The Discriminative Value of Audiological Measurements for Hearing Loss Severity Classification (2025)

M Campi, GW Peters, P Morvan, M Buhl, H Thai-Van

Under Review
Paper 15

Cross-Curve Interest Rate Stress Testing With Endogenous Curve Dynamics (2025)

I Katz, GW Peters, M Campi

Under Review
Paper 16

Attribute associations of municipal green bond yield spreads: A demand perspective (2025)

MH Sehatpour, M Campi, CS Nikitopoulos, GW Peters, KA Richards

From experience to education

Experience

University College London (2016-2021)

Teaching Assistant in the Statistical Science and Computer Science departments, instructing courses in Probability, Statistics, and Programming Methods.
I received recognition as the Best Tutor within the Computer Science Department (2019) and was awarded the UCL Faculty Education Award. I was also shortlisted for the prestigious UCL Provost's Education Award, competing against more experienced faculty members.

Student Supervision


I supervise/ed graduate and doctoral students across multiple institutions:


PhD students at University of California Santa Barbara and University of Technology Sydney focusing on cross-curve interest rate stress testing and green bond yield analysis.


Master's students at the Hearing Institute from various French Schools such as Sorbonne University (Machine Learning), ECE Paris (Acoustics), and AIX-Marseille Université in different audiological applications.


Philosophy


My approach to teaching is grounded in the belief that theoretical concepts must be connected to real-world applications. I emphasize the development of both technical proficiency and critical thinking skills, encouraging students to move beyond formula memorization to deeper understanding of statistical principles.


I value creating an inclusive learning environment where students from diverse backgrounds can thrive. Drawing from my experience as a professional athlete, I incorporate collaborative problem-solving and team-based learning that prepares students for careers in both academic and industry settings.


I believe in adaptive teaching methods that respond to individual learning styles, using a combination of traditional instruction, interactive demonstrations, and hands-on project work to engage students with different strengths and interests.

Teaching Certificate

Collaboration drives excellence

I maintain active research collaborations across disciplines and institutions worldwide.
Along my academic journey, I have had the pleasure of working on several interesting problems with talented researchers.

GWP

Gareth W. Peters

Duncan Endowed Chair Actuarial & Professor of Statistics for Risk & Insurance.

HTV

Hung Thai-Van

Professor of physiology, University of Lyon 1.

TM

Tomoko Matsui

Institute of Statistical Mathematics.

DT

Dorota Toczydłowska

Software Engineer, NVIDIA, Warsaw.

NA

Nourddine Azzaoui

LMBP - Laboratoire de Mathématiques Blaise Pascal.

MB

Mareike Buhl

PostDoc, (CERIAH), Institut de l'Audition, Institut Pasteur, Paris.

IC

Ioannis Chalkiadakis

French National Center for Scientific Research (CNRS).

GS

Guillaume Staerman

Postdoc at INRIA (Parietal).

MHS

Mohammad Hadi Sehatpour

University of Technology Sydney (UTS).

PM

Perrine Morvan

Institut Pasteur, CERIAH.

CQ

Celine Quinsac

Project Manager, Institut Pasteur, CERIAH.

CSN

Christina Sklibosios Nikitopoulos

Associate Professor, UTS Business School.

KAR

Kylie-Anne Richards

Senior Lecturer, UTS Sydney.
Head of Investment Research, Director, Future Fund.

TG

Tobias Goehring

Prof. University of Zurich.
Lead of Deep Hearing Lab.

A closer look at my work

I am a Marie Skłodowska-Curie Postdoctoral Fellow at the Deep Hearing Lab, University of Zurich and University Hospital Zurich, with a second affiliation at CERIAH, IHU reConnect (Institut Pasteur), Paris. My work sits at the interface of statistics, signal processing, and machine learning, and centres on a single question: what makes hearing outcomes individual, and how far they can be predicted.

Within my current project REHEAR (Marie Skłodowska-Curie Actions grant no. 101275781), I develop methods that connect the underlying mechanisms of hearing to the outcomes people experience in practice, with a particular focus on speech understanding in cochlear-implant users and on auditory neuropathy. I work extensively with large-scale audiological data, drawing on statistical signal processing, state-space and time-series modelling, and tools from optimal transport and machine learning to build models that are both accurate and interpretable.

These methods are chosen for a reason. Clinical hearing measures are typically aggregated into single scores, discarding the structure that distinguishes one listener from another, and I work on measures and models that preserve it under the constraints of real diagnostic data: few trials, imperfect labels, heterogeneous cohorts.

The same methodology transfers beyond hearing, and I have applied it in medical diagnostics, speaker verification and cybersecurity, and the analysis of financial and sustainability data. This is a consistent thread in my work: turning advanced statistical methodology into solutions for complex, structured, real-world data.

Trained in Statistical Science and Signal Processing at University College London, I bring a multidisciplinary approach and a track record of international collaboration. Drawing on my background as a professional athlete, I also bring a strategic, results-driven mindset, with an emphasis on adaptability and problem-solving.


Research Interests
  • Optimal transport (Wasserstein and Gromov-Wasserstein methods)
  • Statistical signal processing and non-stationary time-series analy
  • State-space modelling
  • Copula-based dependence modelling
  • Kernel methods (Gaussian processes, SVMs)
  • Deep learning models as models of perception (neural-network speech recognition constrained by auditory representations)
  • Dimensionality reduction and correlation analysis (kPCA, CCA)
  • Signature methods
  • Anomaly detection

Application Domains
  • Cochlear-implant outcome prediction and optimisation
  • Auditory neuropathy and hearing-aid optimisation
  • Speech recognition and processing
  • Medical diagnostics (hearing-loss assessment, Parkinson's disease detection)
  • Speaker verification and biometric security
  • Financial and sustainability data (mathematical finance, green finance, ESG assessment)

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