Ernestynne Walsh

End to End Analytics Specialist

Kia ora, I am an experienced, Māori, senior data scientist from the East coast (Ngāti Porou and Te Whānau-ā-Apanui) of Aotearoa, New Zealand. My speciality areas include: creating transparency in analytics via open data and open source code, creating frontline operational analytical models in Government, focussing on the privacy and ethics around predictive modelling and explainable algorithms.

Sample of Work Experiences

ACC

New Zealand
Technical Lead
Oct 2017 - Sep 2018

Challenge: Over 2 million personal injury claims are manually processed by staff each year. Notification of these claims being accepted is done via postal mail and is too slow.

Solution: Building two services that utilise a series of predictive models to automate this process so that text alerts and emails can notify clients of cover within seconds of the claim being submitted.

Value: Clients will know sooner that their claims will be covered and can focus on rehabilitation rather than worrying about paying for their treatment.

Social Investment Agency

New Zealand
Senior Data Scientist
May 2016 - Present

Challenge: Limited number of people with cross sector evaluation experience who can use the IDI.

Solution: Standardised processing code to use in the IDI that is publicly available on Github - https://github.com/nz-social-investment-agency. Also worked on developing use cases to illustrate how an evaluation could be carried out using such tools.

Value: Each project that uses these tools saves over 6 weeks in time to get a dataset ready for analysis. Currently six other organisations are making use of this code and the tools.

SAS

Australia and New Zealand
Training Contractor
Apr 2015 - present

Challenge: Shortage of people with statistics and machine learning skills.

Solution: SAS training programs for which I teach the open source courses, machine learning and more on the cloud platform SAS Viya in New Zealand and Australia.

Value: More skilled analysts in the workforce. Also, I add additional topics to the course material like ethics, explainable algorithms and how the tools could be used at work.

Ministry of Social Development

New Zealand
Analyst
Aug 2014 - Feb 2016

Challenge: Systems focused view on child welfare that operated in silos.

Solution: A client centred view that consisted of several predictive models relating to safety, behaviour and future earning ability of a child using SAS EG and SAS Enterprise Miner.

Value: Parts of models were used as input to conduct a Randomised Control Trial at the Contact Centre. Models help construct more robust quantitative investment cases to help allocate resources to groups of children where interventions have been successful.

Harmonic Analytics

New Zealand
Data Scientist
Mar 2014 - Aug 2014

Challenge: Asset replacement is not done in the most efficient manner. For example roads are replaced then shortly after the road is removed to replace the pipes beneath.

Solution: Run a network simulation using igraph that forecasts growth in suburbs and identifies future bottlenecks in the 3 waters network. Overlay this with forecasts of when roads need replacing to project the optimised depreciated replacement costs over the next 100 years complete with heatmap and cost visualisation.

Value: Enables a work programme to be created that replaces assets in close proximity at a similar time to reduce cost.

Education

Masters in Statistics and Operations Research (Distinction)

Victoria University of Wellington
2013
Receieved Victoria Masters by Thesis Scholarship and Te Tohu Hīranga o Toihuarewa Excellence Award for the top Māori thesis student

BCA in Management and Human Resources + Industrial Relations

Victoria University of Wellington
2011
HRINZ Award - Awarded to the top student in Human Resources

Various SAS courses covering programming, statistics and analytics

SAS Institute NZ
2013-2014
2014 SAS Best Young Analyst Award

Professional Skills

Top Skills

95%

SAS

Expert, 5 years
SAS Trainer, designer of modular reusable code and user of machine learning tools
90%

Advanced Analytics

Expert, 10 years
Predictive modelling, pattern detection, sample surveys, propensity matching, forecasting and optimisation
85%

Reusable Code

Advanced, 9 years
Modular, tested code that is documented and runs end to end via a main script.

Other Skills

Business and model alignment Privacy and ethics in modelling Communication Process documentation Explainable algorithms
SQL Git Linux R Markdown Automation

Testimonials

My Work and Contributions

Get in Touch

Currently I contract with Nicholson Consulting.

I can help with the following:

  • Analytics in the public sector
  • Frontline operational models
  • Best practice regarding the entire analytics process (question development through to monitoring of operational models)
  • Incorporating open source models into an organisation

Drop me a line at ernestynne@nicholsonconsulting.co.nz