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Today I trained a decision tree model on weather data from the honors lab I’m completing. The model achieves a 83% accuracy on predicting if it will rain or not, using historical data. The chart below shows the decision tree steps. More performance metrics can be viewed below. I’
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Today, I caught up on some AI news. There are lots of cool AI demos floating around on the net. Some look super impressive, but they fall apart when you dig into actual use cases. In December last year, we learned that the Google Gemini model was edited favourably to
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Today I completed the KNN lab. The work is ungraded and I haven’t yet checked whether my results are in line with other students’ but I’ll dig into this once I have all the modes. Here are the results for the KNN model I built today. The code
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Today I started the bonus material of the intro to ML course I’ve been doing. I’ll be working with weather data will practise all the key topics I covered in the course. Key areas include: 1. Linear Regression – completed. 2. KNN – to do 3. Decision Trees – to do
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I completed the Machine Learning with Python introductory course today and received a fun digital certificate for it here. The course is designed as a six-week, part-time program, but I completed it in less than half the time by dedicating a little time every day. I’m also keen to
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K-Means Clustering Continued… I went through a lab exercise today on k-means. I’ve put the code on my Github page here. I remain in awe that you can fit a model with a few lines of code. A snippet is provided below. In this example, a k-means algorithm is
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K-Means Clustering. Today I learnt about k-means clustering. This is another one of those fancy-sounding machine learning techniques that seems intimidating to the uninitiated. But actually, the intuition behind it is simple. Thanks to Youtube, you can understand the rudimental elements of this unsupervised machine learning algorithm fairly quickly. Here’
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More on data. I read a bit more about the data problem in AI after writing about it yesterday. People smarter than I am believe there are diminishing returns to training AI models and ever growing datasets. In this research publication, AI researchers share the following summary: In layman terms
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On Data. One thing that’s clear as I work through this 100 day challenge is how important data is for training AI. We need lots of it, and apparently all the world’s data that’s available on the internet might not be enough for building more advanced models.
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Support Vector Machine. This is another intimidating machine learning term (along with terms like gradient descent!) However, you can use this concept in practice without digging into the crazy maths best left to the academics. Today, I completed a lab that runs you through a simple implementation of a support
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Logistic regression continued. In the lab portion of the intro to ML course today, I went through an exercise of running a logistic regression analysis on fictional customer data. I’ve put the code on Github here. The model is structured as follows: logit(p) = -0.2675 + (-0.1526 * tenure)
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Logistic Regression. On day 1 I worked with linear regressions — a statistical technique to predict a continuous value based on another variable or set of variables. In the last few days I’ve been wrestling with logistic regression. This is is a statistical technique that classifies data into a category.