ON MEASURING MACHINE LEARNING MODELS AGAINST CONCRETE BUSINESS OBJECTIVES

REVIEW NOTES: DATA SCIENCE FOR BUSINESS BY PROVOST & FAWCETT: CHAPTER 7

I enjoyed reading this chapter. It’s insightful and well explained with detailed examples, diagrams and graphics, on a few data science topics that correspond directly to conventional scientific research in computer science. That makes me happy, because these are crucial points, yet rarely are the focus of Kaggle Competitions, books on Machine Learning or Statistics, the latest and greatest in TensorFlow, PyTorch, AutoML libraries (etc, etc) and too infrequently discussed in DL/AI/ML social posts and blogs. Below I have written about the points that are well worth taking home. These topics are broadly on:

  • Careful consideration of what is desired from data science results.
  • Expected value as a key evaluation framework.
  • Consideration of appropriate comparative baselines, in machine learning models.
Continue reading “ON MEASURING MACHINE LEARNING MODELS AGAINST CONCRETE BUSINESS OBJECTIVES”

Open Source Code for Light Stage Capture Sequences

Today I’m posting updates (1/n) to the Light Stage open source project codebase.

The updates mark improvements for integrating experimental result data and 3d geometry data with light and camera-trigger hardware controllers (3). Included are two new lighting sequence improvements (1) and (2) and a way to get started, no matter your stage design and target capture application (4). These changes contribute towards standardised capture sequences and integrated 3d reconstruction pipeline processing, while supporting stage design tools and retaining visualisations, measurable evaluations and optimisations at each step.

Altogether, this work takes a step towards the vision of a comprehensive open source framework for open hardware light stages, find more details at the Build a Light Stage website.

These recent updates to the LightStage-Repo on github include:

  1. Spherical gradient” lighting sequence.
  2. Balanced lighting baseline”.
  3. Local web service (on port 8080) to return data requested by an HTTP client, such as a hardware controller with Ethernet/Wifi module.
  4. Configuration file designed for each Light Stage, to easily get the web service responding with correct sequence data.
Continue reading “Open Source Code for Light Stage Capture Sequences”

Update on Lightstage Project

In this post, I took the liberty to write some of my thoughts and reflections on why Lightstages are (“pretty cool in my book” and also) relevant amongst today’s cutting edge developments in machine learning and data-driven decision making.

Over the last few years, I’ve had the opportunity to work as a researcher on the Aber Lightstage project, under Dr. Hannah Dee. Back then, I wrote a Python-OpenGL-based application to help us visualise and numerically evaluate lighting positions on our stage — the project is open source and on Github. Dr. Dee had successfully raised a bit of funding to bring together a team of engineers, researchers and advisors, each offering their specialist skills and knowledge to the project, and I got the chance to get involved.

Continue reading “Update on Lightstage Project”

Bio-Inspired Robotics Conference – SAB2016

Back on 26th August 2016 we drew to a close SAB2016, the 14th international conference of the series on bio-inspiration for robotics and algorithms from more or less any discipline at theory stages, to simulations and empirically applied. For me, nothing can take away my reverberating proud feeling I have for being a part of a diverse, kind and like-minded collection of people with a sheer fascination for nature, paired with the talent and vision to pursue it for the betterment of society and life. I mean, isn’t that the dream!?

Continue reading “Bio-Inspired Robotics Conference – SAB2016”