Category: Articles

Machine learning is only possible when there’s enough of data available. Data collection is one of the most vital components of the machine learning lifecycle, but it’s also the one that’s often overlooked.

Web scraping—programmatically collecting data from web pages—is often the primary technique used to collect information from the Internet. While web scraping can be very straightforward in some instances, it can be very tricky in other instances. Especially when the data we’re interested in is hidden behind a button that requires a mouse click.

Continue reading “Building an Advanced Web Scraper for Kaggle Leaderboards Using RSelenium”

While looking to try my hand at using Apple’s Core ML framework for on-device machine learning, I stumbled upon a lot of tutorials. After having tried a few, I decided to come up with my very own 😛

Turns out, it was a good exercise! In this tutorial, I’ll walk you through the development of an app that uses a pre-trained Core ML model to detect a person’s age from an input image. So here we go.

Continue reading “Using Core ML and Vision in iOS for Age Detection”

In a previous tutorial titled Image Upload from Android to a Python-based Flask Server, we created a project in which an Android app uploads an image to an HTTP server created using Flask in Python.

This tutorial extends on the previous project to classify that image in the Flask server using a pre-trained multi-class classification model and display the class label in an Android app. The model is a multilayer perceptron (MLP) model created using Keras, which is trained on the MNIST dataset.

Continue reading “Image Classification on Android using a Keras Model Deployed in Flask”

Amongst all the cool new tech releases and updates that happened last year, three in particular stood out to me:

SwiftUI — because I’m so over XIBs and Storyboards. SFSpeechRecognizer providing on-device and unlimited usage of transcription ML Kit’s Translation API also providing on-device and unlimited usage of language translation

These three advances inspired a few projects of mine, in which I’ve combined them in various ways. For instance, I’ve created a speech translator that uses zero data, even while traveling internationally.

As pointed out to me by a reader here on Medium, it only makes sense, then, for me to combine them all into one ‘last’ ultimate example: and on-device subtitle generator for video.

Continue reading “On-Device Video Subtitle Generation in SwiftUI”

Machine learning is often viewed through the lens of transformation, whether it’s reshaping an industry, automating tedious tasks, or inspiring immersive experiences.

The latter transformation is front and center in Hart Woolery’s InstaSaber. It’s an ML-powered iOS app that lets users take a rolled up piece of paper and, by holding it in front of the phone’s camera, generate a realistic augmented reality (AR) lightsaber that’s highly-responsive to real-time hand movement.

Continue reading “InstaSaber: Transform a piece of paper into a lightsaber with mobile machine learning and AR”

With 3D Motion Sense technology already out on Pixel 4, it looks like our way of interacting with phones is going to change soon. Touchless interactions have a promising future for sure, with Apple’s most ambitious product to date— AR glasses—already under development.

Continue reading “Winks and Head Turns — Build a Tinder-Swipe iOS App Using ML Kit’s Face Detection API”

What is Model Evaluation?

Model evaluation is the process of choosing between models, different model types, tuning parameters, and features. Better evaluation processes lead to better, more accurate models in your applications.

In this article, we’ll be discussing model evaluation for supervised classification models. We’ll cover evaluation procedures, evaluation metrics, and where to apply them.

Continue reading “Classification Model Evaluation”

People are passionate about pizza. Deep dish, thin crust, traditional pan, flatbread — and those are just styles of crust, to say nothing of topping preferences. Pineapple? Anchovies??

With such a wide variety of styles and preferences to swear by, it’s important for pizza lovers to have an authoritative source for honest and legitimate reviews — and the chance to share their love of pizza with others.

Continue reading “One Bite pizza reviews: Building community trust with mobile machine learning”