Harihar Rengan speaking at InnovAIte
At InnovAIte
Dubai, UAE

HariharRengan.

I'm a machine-learning researcher at Dubai College, working on explainable AI for healthcare. I founded EpicxAI, co-founded Lock In and AlziDetect, and co-lead the Dubai CS Society. At school I have led societies in mathematics, physics and computer science.

01

Statistics at a glance.

rengan / stats Updated Oct 2026
US patent granted
0

US 12,737,201 ↗ · sole inventor

Papers 2026
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View on ORCID ↗

Accepted IEEE · ACM
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COMPSAC, Healthcom ×2, ICMHI, URTC, CAISAIS, TALE, SBP-BRiMS

(Co-)first author incl. sole
0

First or equal-first author; one sole-authored

EpicxAI users
0

Search cut from 8 minutes to 3 seconds

Lock In funded
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Emergent Ventures grant for Lock In

AlziDetect seniors
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With Alpha Clinic; 165 referred to GPs

Mentored students
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Across the world

02

Research papers.

ACM ICMHI 202610th Int'l Conf. on Medical & Health Informatics · Kyoto
AUD Explainable AI LabPublished · May

Augmenting Cardiovascular Care with Artificial Intelligence: A Clinical Approach

V. Pangracious, H. Rengan, G. Abdallah, H. Park

We compare ML models on heart-failure records for mortality, ejection fraction and survival, and use feature importance to see which clinical measures drive each prediction.

CardiologySurvival analysis
99.04%accuracy, LightGBM on 4 features
2.8MAE predicting ejection fraction
0.75Cox C-index
Fig. 2 · from the paperPredicted vs. actual ejection fraction, with residuals.
IEEE COMPSAC 2026IEEE flagship conference · MediComp workshop · pp. 3044–3051

Prior-Informed Normative EEG Scoring for Alzheimer's Detection: Framework and Cross-Paradigm Boundary Analysis

H. Rengan*, A.-M. Valiyev*, R. B. Zhu*, C. Do, E. Y. Fu * equal contribution

An interpretable way to screen for Alzheimer's from EEG. Recordings are scored against a model of healthy brains using directions from the Alzheimer's literature, so training needs no Alzheimer's patients, and each score breaks down by frequency band and brain region.

Co-first authorEEGAlzheimer's
1.00AUC separating AD from depression (simulated, emotion-aware)
0.49same split, scored like resting state
7literature priors, zero AD labels
Fig. 4 · from the paperDeviation scores for AD and depression: mean across emotions (left), variance across emotions (right).
IEEE MIT URTC 2026Undergraduate Research Technology Conference
Lock InAccepted · Oct 10

An Empirical Analysis of Student Disengagement

H. Rengan*, A.-M. Valiyev* * equal contribution

We used 1.65M answers from EdNet to find what predicts a student ending a session. Interpretable hazard models put phone use as the largest effect.

Co-first authorSurvival analysisLearning science
+27%risk of quitting when on a phone
≈ 0effect of difficulty once format is controlled
5models, LSTM and Cox included
Fig. 3 · from the paperCox hazard ratios for ending a session.
SBP-BRiMS 2026 · CMUSocial Computing & Behavior Modeling · working paper
Lock InPublished · Oct 5

Empirical and Behavioral-Simulation Based Evidence for Portfolio-Style Allocation in Student Study Time

H. Rengan*, A.-M. Valiyev* * equal contribution

Shorter version of the TALE paper, presented at CMU.

Co-first authorSimulationLock In
297kreal learners (EdNet KT3)
8,000simulated students with 11 traits
~86%of the gain comes from just splitting time evenly
Fig. 1 · from the paperAllocation loss against the number of self-evaluations.
IEEE Healthcom 2026E-health Networking, Application & Services
AUD Explainable AI LabAccepted · Oct 21

Explainable Single-Biomarker AI for CKD Screening Using Symbolic Regression

H. Rengan, V. Pangracious

An explainable CKD screening formula that uses only serum creatinine and can be worked out by hand.

First authorSymbolic regressionNephrology
0.82cross-validated AUC on 2,249 patients
92%of the AUC of six-feature baselines
0.95AUC on a held-out clinical cohort
Fig. 3 · from the paperCalibrated CKD probability against serum creatinine.IEEE Healthcom 2026Presenting this paper in New York.
IEEE Healthcom 2026E-health Networking, Application & Services
AUD Explainable AI LabAccepted · Oct 21

Understanding the Generalization Limits of EEG-Based Mind-Wandering Detection: A Trustworthy Cross-Paradigm Study Across Reading and Video-Watching

E. Tomar*, H. Rengan*, V. Pangracious* * equal contribution

We test EEG mind-wandering detection on video watching and on reading, with leakage-controlled evaluation. Accuracy on reading is close to chance.

Co-first authorEEGRiemannian features
0.936AUROC on video (previous best 0.876)
0.809same, with leakage controlled
0.542AUROC on reading
Fig. 1 · from the paperWithin-subject AUROC by frequency band for video (left) and reading (right).IEEE Healthcom 2026Presenting this paper in New York.
IEEE CAISAIS 2026AI Science & Applications in Industry and Society
AUD Explainable AI LabAccepted · Nov 25

NeuroAssist: ML-Driven MRI Vision for Brain Tumor Analysis

H. Rengan, V. Pangracious, T. AlAkl, M. AbouRehab, S. Makin, L. Noman

Brain-tumour segmentation and survival estimation from MRI in one deployable pipeline. An interpretability layer turns the masks into tumour volumes and ratios a clinician can read.

First authorMRIU-Net
0.756peak validation Dice
0.646mean IoU
369BraTS 2020 cases
Fig. 2 · from the paperSegmentation in axial, coronal and sagittal planes, with a 3D reconstruction of the tumour.
IEEE TALE 2026IEEE flagship conference · Teaching, Assessment & Learning for Engineering
Lock InAccepted · Dec 4

Empirical and Behavioral-Simulation Based Evidence for Portfolio-Style Allocation in Student Study Time

A.-M. Valiyev*, H. Rengan* * equal contribution

Models study time as an investment split across subjects, using empirical data, a simulation and an RL agent. Permutation importance shows which student traits matter for GPA.

Co-first authorReinforcement learningLearning science
~86%of the gain captured by an even split
70%of the greedy-to-optimal gap closed by RL
3independent experiments
Fig. 3 · from the paperPermutation importance of each trait for predicting GPA.
Scientific ReportsSpringer Nature · Research Square preprint

Augmenting Heart Failure Detection with AI: A Clinical Approach

V. Pangracious, H. Rengan, G. Abdallah, H. Park

Journal extension of the ICMHI paper. It adds a decision-support app with SHAP explanations for clinicians and patients.

CardiologyJournal
0.9989AUROC, LightGBM
7model families benchmarked
2user flows: clinician and patient
Fig. 4 · from the paperPredicted survival curves for two patients.
ArrayElsevier · SSRN preprint

An Investigation of the Limits of EEG-Based Mind-Wandering Detection Across Cognitive Paradigms

H. Rengan*, V. Pangracious*, E. Tomar* * equal contribution

Journal extension of the Healthcom mind-wandering paper, with more models, aimed at detection that is trustworthy and interpretable across tasks.

Co-first authorEEGJournal
9models compared
0.411AUROC transferring across datasets
Fig. 1 · from the paperWithin-subject AUROC by frequency band for video (left) and reading (right).
TMLRTransactions on Machine Learning Research
IndependentUnder review

Certified orthogonal-polynomial surrogates for ML interpretability

H. Rengan · sole author · independent

Interpretability theory: polynomial surrogates for black-box models with certified error bounds. The title is hidden during double-blind review.

Sole authorApproximation theoryXAI
Illustration · from the paperInterpolating 1/(1+25x²) with equispaced vs. Chebyshev nodes.
03

Research labs.

T/02 · Hong Kong PolyU · ComputingMar 2026–present

Neuro & EEG

EEG and gaze for Alzheimer's screening, through AlziDetect.

  • Normative EEG scoring with no Alzheimer's labels (IEEE COMPSAC)
  • Preparing to submit a journal paper on a similar topic
  • Detecting ADHD-related reading difficulty from EEG and gaze
Supervised by Dr. Chi-wai Do and Dr. Eugene Yujun Fu
T/03 · Martinos Center (Harvard)Jun 2026–present

Neuroimaging

Research intern at the joint MIT–Harvard lab at MGH. Deep learning for MRI segmentation under Harvard PhD supervision, and an Alzheimer's imaging project pending grant approval.

T/00 · UC Santa Cruz SIP

Plasmonic biosensors

First research: simulating nanostructures for more sensitive biosensors.

Jun–Aug 2024
04

Projects.

Founder & CEO · 2025–present

EpicxAI

Users type what they want to do and EpicxAI opens the right page. Royal Sundaram Insurance agents use it.

20k+Users
1US patent granted
3 sSearch, down from 8 min
US patent · granted Sep 15, 2026

System and Method of Navigating a Digital Platform with a Customized Virtual Assistant

Patent
US 12,737,201
Filed
Jul 15, 2025
Application
19/270,080
Inventor
Harihar Rengan
Co-founder · technical research lead

AlziDetect

Low-cost Alzheimer's screening from EEG, eye movements and face tracking, with researchers at Hong Kong PolyU and EdUHK. We partnered with Alpha Clinic to reach 530+ seniors, and referred 165 of them to their GPs.

530+Seniors, with Alpha Clinic
165Referred to GPs
Top 0.1%Blue Ocean, 23k+
Awards & press

Other / older
projects.

Keep scrolling ↓
2025– · App a Year, Dubai CS Society

Dubai CarShare

Carpooling for school runs, built for about 2,000 Dubai College parents. Now being prepared for launch.

~2,000Parents
30+Students built it
The app DC CarShare live map of families DC CarShare discover screen
Harihar filming a DC CarShare promotional video
Filming a DC CarShare promo video · Watch the video ↗
2026– · App a Year, Dubai CS Society

SpeakUp

A digital aide for student parliament: an anonymous channel for students to give feedback to student leadership. In talks with student leadership.

2026Started
2026– · InnovAIte hackathon

Reloop

Waste detection from photos. A ResNet50 model sorts items into 7 material types.

3rdInnovAIte
3,000 AEDPrize
7Material types
2026– · For fun

Nichenaut

A multiplayer quiz game where the rarest right answer scores the most. Teachers can host it for a class.

190k+Plays
18.3k+Users
300+ AEDRevenue
2024 · For fun

harlang

A small interpreted programming language. The interpreter is written in Python.

PythonInterpreter
2024Built
main.harl
SET 0 5;
SET 1 6;
SET 2 1;
ADD 1 1;
OUT 1;
DO 0 ! 1 [
  OUT 0;
  SUB 0 2;
]
2023–24 · Python library

py3dsa

Data structures and algorithms in Python. I used it to teach DSA to other students.

4kDownloads
PyPIPublished
Install
$ pip install py3dsa
05

Leadership.

Co-head of the Dubai CS Society, with Ali-Mansur Valiyev · Sep 2025–present

Computer Science Society

It started as Dubai College's CS society, which we grew into the Dubai CS Society. I've since handed on the school chapter and still head the wider society. Weekly sessions, four sub-clubs, hackathons and guest speakers. Our first international chapter opened in Bahrain, with Singapore, New Jersey and Hong Kong next.

450+Members, up from 50
370+Students mentored
50k AEDRaised with MUGA League
Department promotion · LinkedIn Watch on LinkedIn ↗

Featured in the Dubai College Computer Science department's promotional video.

Computer Science Society programme

App a Year

Each year we mentor a group of students to build one app for the school. So far that's DC CarShare, built with the Sustainability Club, and SpeakUp, an anonymous feedback channel to student leadership. Students also get experience with real-world CS applications, such as from guest speaker talks, our first in two years.

2Apps
30+Students on CarShare
Tucker Highfield presenting to the CS Society
Our first guest speaker in two years
DC CarShare live map
DC CarShare
Computer Science Society programme

Knowledge Library

Animated, Manim-powered lessons on six core CS topics, with runnable Python. Built with a City University of Hong Kong professor and used across our chapters.

6Modules
ManimAnimations
Modules Knowledge Library modules: OOP, DSA, databases, networks, operating systems, ML
Computer Science Society programme · Summer 2026

Summer Cohorts

Free summer programmes we run with other student organisations, open to students anywhere. Across two cohorts we mentored 370+ underserved students, reflecting the global expansion of our society.

5SISTER research tracks
6 wksYouth Economy Lab
Summer 2026
  • SISTER · Jun 29 – Aug 2A free summer research programme, co-hosted with Synthica and 8 other organisations
  • Youth Economy Lab · Jul 15 – Aug 29We ran the computation and startups track
Director & Technical Lead · Mar 2026–present

MUGA League

An intra-school charity basketball league and our biggest charity project. CS Society members built the league's website and live stats tools, and filmed content for the school's social media.

50k+ AEDRaised for charity
Co-president · Oct 2025–Oct 2026

Mathematics Society

Weekly mentoring and maths-team practice. We organise the Dubai Math Super League, helped run a national competition, and I started the DC Integration Bee.

90+Members
200+National competition entrants
Integration Bee

An integral from the Integration Bee. Can you solve it?

Co-president

Applied Maths Club

The applied side of the Maths Society, run as its own club.

80+Members
Harihar working through a problem with Applied Maths Club members
International Schools Mathematics Teachers’ Foundation · Feb 2026

ISMTF

The ISMTF senior competition at the University of Vienna. I placed 4th individually, one of nine students representing Dubai College. In the virtual round I was 6th individually and our team placed 1st.

4thVienna, individual
1stVirtual, team
9DC students
Vienna, Feb 2026
Harihar with his medal at Universität Wien
With the medal
Dubai College team dinner in Vienna
Team dinner
Competitor for Dubai College

Dubai Math Super League

Separate from organising it through the Maths Society, I also compete in it for Dubai College. We've ranked first in the UAE twice.

UAE #1Twice
Founder & President · Jan 2025–Sep 2026

Physics Society

I started it for calculus-based physics beyond the syllabus. This year we ran a practical measuring g and Physics Olympiads at three levels.

30+Members
3Olympiad levels
Field from a finite line charge · drag the point
+ + + + + + + + + + P
E∥ = kλ(1/r2 − 1/r1) = 0
E⊥ = (kλ/d)(u2/r2 − u1/r1) = 0
Drag P anywhere. Values in units of kλ.
Head of DC CarShare · Sep 2025–Sep 2026

Sustainability Club

DC CarShare began as an idea in the Sustainability Club. We built it with the CS Society and presented it to the school's senior leadership, and the app is now being prepared for launch. I also wrote about computer vision for carbon-credit monitoring in the club magazine.

30+Students built it
400Parents surveyed
150+Students surveyed
From the Sustainability Magazine, Term 1 2025–26 DC CarShare app and students building it
06

Awards.

3 awards

Venture

Global top 0.1%Blue Ocean Student Entrepreneur CompetitionTop 100 of 23,000+ entrepreneurs worldwide (AlziDetect). 3rd in the Middle East region2026
Innovator AwardConrad ChallengeConrad Innovator Award and Conrad China Silver. Diamond Challenge semi-finalist2026
$10k grantEmergent Ventures ↗$10k grant to build Lock In (55th cohort)2026
6 awards

Maths

Top 100 / 240k+UK Mathematics TrustIMC perfect score 135/135, HMO Bronze, 9 Golds, 3 Distinctions, BMO Round 1 qualifier twice2022–25
#3 / 41k+ChallengeME Mathematics3rd of 41,000+ students across the Middle East2025
AIME qualifierAmerican Mathematics CompetitionsQualified for AIME through AMC 12 (2025). School rank 1 and UAE rank 2 on AMC 102024–25
1st · 4th ×2ISMTF Senior Competition1st, 4th twice and 6th globally across rounds, including 4th individually in Vienna2025–26
UAE #1 ×2Dubai Math Super LeagueRanked first in the UAE twice, representing Dubai College2025–26
1 / 360Mathematician of the YearDubai College's top mathematician. Math A-team (3 of 160)2025
5 awards

CS

UAE #1American Computer Science League 2025National Rank 1 and national champion2025
UAE #2American Computer Science League 2026Finalist, with a perfect score on programming2026
UAE #1iCodeJr CodeBattleNational champion with Veritas News2025
UAE #3InnovAIte Hackathon 20263rd nationally with Reloop, 3,000 AED prize2026
UAE #4InnovAIte Hackathon 20254th nationally with ZenNova, an AI mental-health assistant2025
4 awards

Other

UAE U19 #14Badminton, U19 singlesRanked 14th in the UAE. Quarter-finalist at the LionSSports tournament. Dubai College varsityOngoing
Grade 8 · MeritElectronic Keyboard (Trinity)Grade 8 with Merit after 7+ years of music2026
Top 1%John Locke Institute · TheologyVery High Commendation for “If you achieved enlightenment, how would you know?”2026
Top 10%John Locke Institute · International RelationsCommendation for “Does foreign aid help or hurt poor people?”2026
07

Other activities.

Harihar Rengan presenting at IEEE Healthcom 2026 in New York
Presenting at IEEE Healthcom, New York
Education & Qualifications · Aug 2020 – Jul 2027

Dubai College

A-Levels: Mathematics, Further Mathematics, Physics, Computer Science.

SAT: 1560 (800 Math, 760 Reading & Writing).

AP Calculus AB: 5.

GCSEs: 10 subjects, all Grade 9. Pearson High Achiever Award.

HPQ: “To what extent can AI affect the software development process?” · A*

EPQ: “Do Parkinson's spiral/wave-drawing CNN classifiers pass explainability checks by highlighting clinically known features on the drawing?”

Sport, music & writing

Badminton, ranked 14th in the UAE for U19 singles, and a quarter-finalist at the LionSSports tournament.

Grade 8 with Merit in Electronic Keyboard (Trinity).

Economics and theology. Presenter and essayist at the Dubai Keynes Society (DKS). Commendation (top 10%) in the John Locke Institute International Relations category for “Does foreign aid help or hurt poor people?”, and Very High Commendation (top 1%) in Theology for “If you achieved enlightenment, how would you know?”

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