Hey There!
I'm Nisha, a Machine Learning Engineer & STEM advocate.
My background is in Data Science, DevOps & Physics.
Learn more about my work & connect below.

ML Projects & Articles

Can Twitter Predict the Peak of a Pandemic?

Nature Scientific Report September 2021: During the early stages of the COVID-19 pandemic, understanding the evolution of virus transmission before mass testing was made readily available is important for policy makers & government officials. This work involved analysing Twitter data to extract insights during the first wave of the pandemic. Statistical methods and NLP techniques were used to predict the occurence of an outbreak and analyse public opinions and attitudes towards government measures.

PhD Research

My research focuses on developing ML approaches tailored to optimising particle track reconstruction algorithms at the Large Hadron Collider experiment at CERN. Working in a diverse and collaborative environment gave me the opportunity to learn from experts in the field and allowed me to develop a foundation of interdisciplinary scientific knowledge, combining intuition with creativity!

Leveraging GNN Architectures

The approach aims to iteratively extract particle track candidates by utilising Graph nodes, Gaussian Mixture Reduction techniques and embedded Kalman filters within network message passing. Pre-print article available here.

Connecting the Dots Conference

In 2022 I presented my work on track finding at the Connecting the Dots conference at the University of Princeton.

Working at CERN

During 2022-2023 I worked at the LHC experiment in Switzerland, where I was a part of the ML Physics community. The ATLAS detector, fundamentally a complex Big Data project, is designed to observe up to 1.7 billion particle collisions per second, with over 100 million electronic readout channels and a combined data volume of more than 60 million MB/s.

ML Predictor for Measurement-to-Track Association

Design and construction of a supervised ML classifier used to identify compatible hit-pairs of particle trajectories using geometrical input features. The method employs a Naive Bayes approach, with fitted kernel densities for the likelihood function and uses a fast lookup implementation in order to balance trade-off concerns between efficiency metrics and computing resources. This approach was deployed into production software, achieving over 2x speed-up factor. Published article available here (2023).

Outreach

Knowledge sharing is something I am passionate about. Below are some of the projects I have been involved with.

Hacking for Charity

Whilst at Oracle I co-organised a Data Science hackathon raising ~£5k for The Prince's Trust. The aim of the event was to use The Trust's data to create innovative solutions & models for their ongoing charity campaigns. (London 2018)

Python Code Club

Knowledge sharing & encouraging others to get excited about STEM is a passion of mine! Here I am teaching high school students the basics of Python programming with an interactive workshop. (London 2018)

Docker London Meetup

Speaking at meetups is a great way to improve my confidence in front of large crowds and knowledge share within the developer community. I've presented my Docker Tips & Tricks @ Skills Matter in London, an intro for beginners on getting started with containers. (London 2018)

Women of Silicon Roundabout

As part of the #WinTechSeries, I presented an introduction to Containers & its applications in Cloud Computing. (London 2018)

Programming Instructor

CodeFirst:Girls is a non-profit organisation with the aim of encouraging women to learn how to code! I worked with them to become a web development programming instructor, delivering sessions on the fundamentals of HTML, JS & CSS, with the end goal for each student to create their own website. (Bristol 2019)

Interests

Raising money for charitable causes has always been a large part of my life. The image above was taken as part of a sponsored hike for Kidney Research UK.

The above picture is a project with Global Architecture Brigades to help build homes & sustainable structures for rural communities in Honduras. Since the beginning of this project, over 2000 families have benefitted.