Articles by Nagdev Amruthnath

How to become a data scientist in 30 days?

June 29, 2020 | 0 Comments

On a late evening, I was scrolling through Reddit and came across a news article about “Why Bill Gates wants us all to get vaccinated?”. The news site looked legitimate. I was half way through the article and saw quite a few grammatical errors. Me being lurker, I switched to ...
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Visualizing Principle Components for Images

June 28, 2020 | 0 Comments

Principle Component Analysis (PCA) is a great tool for a data analysis projects for a lot of reasons. If you have never heard of PCA, in simple words it does a linear transformation of your features using covariance or correlation. I will add a few links below if you want ...
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Data Science Application in Manufacturing

June 22, 2020 | 0 Comments

Last week, I had a great opportunity to give a talk on data science application in manufacturing at Acharya Institute of Technology(AIT), Bangalore. Being an alumni, AIT has a special place in my heart. A lot of curious young minds who attended my session had great questions. Some of ... [Read more...]

Testing the Effect of Data Imputation on Model Accuracy

June 20, 2020 | 0 Comments

Most of us have come across situations where, we do not have enough data for building reliable models due to various reasons such as, it’s expensive to collect data (human studies), limited resources, lack of historical data availability (earth quakes). Even before we begin talking about how to overcome ...
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Anomaly Detection for Predictive Maintenance using Keras

June 10, 2020 | 0 Comments

In this tutorial I will discuss on how to use keras package with tensor flow as back end to build an anomaly detection model using auto encoders. Auto encoders is a unsupervised learning technique where the initial data is encoded to lower dimensional and then decoded (reconstructed) back. Based on ...
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COVID-19 Data and Prediction for Michigan

March 26, 2020 | 0 Comments

Every country is facing a global pandemic caused by COVID19 and it’s quite scary for everyone. Unlike any other pandemic we faced before, COVID19 is providing plenty of quality data in near real time. Making this available for general public has helped citizen data scientists to share their reports, ...
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Auto Encoders for Anomaly Detection in Predictive Maintenance

March 5, 2020 | 0 Comments

Autoencoders is an unsupervised version of neural network that is used for data encoding. This technique is mainly used to learn the representation of data that can be used for dimensionality reduction by training network to ignore noise. Autoencoders play an important role in unsupervised learning and deep architectures mainly ...
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Convolutional Neural Network under the Hood

February 27, 2020 | 0 Comments

Neural networks have really taken over for solving image recognition and high sample rate data problems in the last couple of years. In all honesty, I promise I won’t be teaching you what neural networks are or CNN’s are. There are hundred’s of resources that are published ...
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