MIDAS: A State-of-the-Art Model for Anomaly Detection in Graphs

In machine learning, hot topics such as autonomous vehicles, GANs, and face recognition often take up most of the media spotlight. However, another equally important issue that data scientists are working to solve is anomaly detection. From network security to financial fraud, anomaly detection helps protect businesses, individuals, and online communities. To help improve anomaly detection, researchers have developed a new approach called MIDAS.

#detecting-data-anomalies #anomaly-detection #artificial-intelligence #data-science #machine-learning #deep-learning #ai

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MIDAS: A State-of-the-Art Model for Anomaly Detection in Graphs

In machine learning, hot topics such as autonomous vehicles, GANs, and face recognition often take up most of the media spotlight. However, another equally important issue that data scientists are working to solve is anomaly detection. From network security to financial fraud, anomaly detection helps protect businesses, individuals, and online communities. To help improve anomaly detection, researchers have developed a new approach called MIDAS.

#detecting-data-anomalies #anomaly-detection #artificial-intelligence #data-science #machine-learning #deep-learning #ai

These Tips Will Help You Step Up Anomaly Detection Using ML

In this article, you will learn a couple of Machine Learning-Based Approaches for Anomaly Detection and then show how to apply one of these approaches to solve a specific use case for anomaly detection (Credit Fraud detection) in part two.

A common need when you analyzing real-world data-sets is determining which data point stand out as being different from all other data points. Such data points are known as anomalies, and the goal of anomaly detection (also known as outlier detection) is to determine all such data points in a data-driven fashion. Anomalies can be caused by errors in the data but sometimes are indicative of a new, previously unknown, underlying process.

#machine-learning #machine-learning-algorithms #anomaly-detection #detecting-data-anomalies #data-anomalies #machine-learning-use-cases #artificial-intelligence #fraud-detection

Credit Card Fraud Detection via Machine Learning: A Case Study

This is the second and last part of my series which focuses on Anomaly Detection using Machine Learning. If you haven’t already, I recommend you read my first article here which will introduce you to Anomaly Detection and its applications in the business world.

In this article, I will take you through a case study focus on Credit Card Fraud Detection. It is important that credit card companies are able to recognize fraudulent credit card transactions so that customers are not charged for items that they did not purchase. So the main task is to identify fraudulent credit card transactions by using Machine learning. We are going to use a Python library called PyOD which is specifically developed for anomaly detection purposes.

#machine-learning #anomaly-detection #data-anomalies #detecting-data-anomalies #fraud-detection #fraud-detector #data-science #machine-learning-tutorials

Introduction to Anomaly Detection Using PyCarat

What is an Anomaly?

An anomaly by definition is something that deviates from what is standard, normal, or expected.

When dealing with datasets on a binary classification problem, we usually deal with a balanced dataset. This ensures that the model picks up the right features to learn. Now, what happens if you have very little data belonging to one class, and almost all data points belong to another class?

In such a case, we consider one classification to be the ‘normal’, and the sparse data points as a deviation from the ‘normal’ classification points.

For example, you lock your house every day twice, at 11 AM before going to the office and 10 PM before sleeping. In case a lock is opened at 2 AM, this would be considered abnormal behavior. Anomaly detection means predicting these instances and is used for Intrusion Detection, Fraud Detection, health monitoring, etc.

In this article, I show you how to use pycaret on a dataset for anomaly detection.

What is PyCaret?

PyCaret is an open-source, low-code machine learning library in Python that aims to reduce the cycle time from hypothesis to insights. It is well suited for seasoned data scientists who want to increase the productivity of their ML experiments by using PyCaret in their workflows or for citizen data scientists and those **new to data science **with little or no background in coding. PyCaret allows you to go from preparing your data to deploying your model within seconds using your choice of notebook environment.

So, simply put, pycaret makes it super easy for you to visualize and train a model on your datasets within 3 lines of code!

So let’s dive in!

#anomaly-detection #machine-learning #anomaly #fraud-detection #pycaret

ART + AI

The idea that AI can infiltrate the field of art is frightening and rightfully so. While it has been no secret that AI can definitely replace blue-collar jobs and possibly threaten white-collar jobs, the idea that it can impact the livelihood of artists isn’t one that the media has foretold, nor have dystopian movies explored. However, we can see early traces of AI in art. It has slowly seeped into written literature, journalism, paintings and even music.

Having said that, this isn’t a novel (😉) idea. Sometime in the 90s, a music theory professor trained a program to write Bach-styled compositions. Then, to his students, he played both the real and computer-generated versions. To them, both were indistinguishable. Since then, technology has rapidly improved to a state that AI can create music of its own.

#ai #art #artificial-intelligence #art-and-ai #is-ai-art-really-art #is-art-unique-to-humans #creativity #future