AI and machine learning: Our essential podcasts: Recent Episodes
InfoQ
Shubha Nabar is a senior director of data science for Salesforce Einstein. Prior to working for Salesforce, she was a data scientist at LinkedIn and Microsoft. In the podcast she discusses Salesforce Einstein and the problem space that they are trying to solve, explores the differences between enterprise and consumer for machine learning, and then talks about the Optimus Prime Scala library that they use in Salesforce.
Why listen to this podcast: * The volume of data, and hardware advances have made it possible to do machine learning to do them a lot faster. * AI is a science of building intelligent software, encompassing many aspects of intelligence that we tend to think of as human. * If you can’t measure something, you can’t fix it. * You have to think about what you can automate, rather than having a human to try and engineer out all those features. * Get feedback on design.
Nora Jones, a senior software engineer on Netflix’ Chaos Team, talks with Wesley Reisz about what Chaos Engineering means today. She covers what it takes to build a practice, how to establish a strategy, defines cost of impact, and covers key technical considerations when leveraging chaos engineering.
Why listen to this podcast:
- Chaos engineering is a discipline where you formulate hypotheses, perform experiments, and evaluate the results afterwards.
- Injecting a bit of failure over time is going to make your system more resilient in the end.
- Start with Tier 2 or non-critical services first, and build up success stories to grow chaos further.
- As systems become more and more distributed, there becomes a higher need for chaos engineering.
- If you’re running your first experiment, get your service owners in a war room and get them to monitor the results of the test as it is running.
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Eric Horesnyi, CEO @streamdata.io, talks to Charles Humble about how hedge funds are applying deep learning as an alternative to the raw speed favoured by HFT to try and curve the market.
Why listen to this podcast:
- Streamdata.io was originally built for banks and brokers, but more recently hedge funds have begun using the service.
- Whilst Hedge Funds like Renaissance Technologies have been using mathematical approaches for some time deep learning is now being applied to markets. Common techniques such as gradient descent and back propagation apply equally well to market analysis.
- The data sources used are very broad. As well as market data the network might be using, sentiment analysis from social networks, social trading data, as well as more unusual data such as retail data, and IoT sensors from farms and factories.
- By way of contrast High Frequency Trading focusses on latency. From an infrastructure stand-point you can play with propagation time, Serilization (the thickness of the pipe), and Processing time for any active component in chain.
- One current battleground in HFT is around using FPGA to build circuits dedicated to feed handlers. Companies such as Novasparks are specialists in this area.
More on this: Quick scan our curated show notes on InfoQ http://bit.ly/2nv71M8
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In this week's podcast InfoQ’s editor-in-chief Charles Humble talks to Data Scientist Cathy O’Neil. O'Neil is the author of the blog mathbabe.org. She was the former Director of the Lede Program in Data Practices at Columbia University Graduate School of Journalism, Tow Center and was employed as Data Science Consultant at Johnson Research Labs. O'Neil earned a mathematics Ph.D. from Harvard University. Topics discussed include her book “Weapons of Math Destruction,” predictive policing models, the teacher value added model, approaches to auditing algorithms and whether government regulation of the field is needed.
Why listen to this podcast:
- There is a class of pernicious big data algorithms that are increasingly controlling society but are not open to scrutiny.
- Flawed data can result in an algorithm that is, for instance, racist and sexist. For example, the data used in predictive policing models is racist. But people tend to be overly trusting of algorithms because they are mathematical.
- Data scientists have to make ethical decisions even if they don’t acknowledge it. Often problems stem from an abdication of responsibility.
- Auditing for algorithms is still a very young field with ongoing academic research exploring approaches.
- Government regulation of the industry may well be required.
Notes and links can be found on http://bit.ly/2eYVb9q
Weapons of math destruction
0m:43s - The central thesis of the book is that whilst not all algorithms are bad, there is a class of pernicious big data algorithms that are increasingly controlling society. 1m:32s - The classes of algorithm that O'Neil is concerned about - the weapons of math destruction - have three characteristics: they are widespread and impact on important decisions like whether someone can go to college or get a job, they are somehow secret so that the people who are being targeted don’t know they are being scored or don’t understand how their score is computed; and the third characteristic is they are destructive - they ruin lives. 2m:51s - These characteristics undermine the original intention of the algorithm, which is often trying to solve big society problems with the help of data.
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In this week's podcast QCon chair Wesley Reisz talks to Machine learning research scientist John Langford. Topics include his Machine Learning system Vowpal Wabbit, designed to be very efficient and incorporating some of the latest algorithms in the space. Vowpal Wabbit is used for news personalisation on MSN. They also discuss how to get started in the field and it’s shift from academic research to industry use.
Why listen to this podcast:
- Vowpal Wabbit is a ML system that attempts to incorporate some of the latest machine learning algorithms.
- How to learn ML: take a class or two, get accustomed with learning theory and practice.
- ML has moved from the research field into the industry, 4 out of 9 ICML tutorials coming from the industry.
- It’s hard to predict when you have enough data.
- AlphaGo is a milestone in artificial intelligence. It uses reinforcement learning, deep learning and existing moves played by Go masters.
- Deep Learning is currently a disruptive technology in areas such a vision or speech recognition.
- What’s trendy: Neural Networks, Reinforcement and Contextual Learning.
- Machine Learning is being commoditized.
Notes and links can be found on http://bit.ly/2b4YNqQ
How to Approach Machine Learning
6m:12s To start learning Machine Learning, Langford recommends taking a class or two, mentioning the course by Andrew Ng and another course by Yaser S. Abu-Mostafa. 6m:50s It is recommended to get accustomed with learning theory to avoid some of the rookie's mistakes.
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