Machine Learning 4 : Skin Color Classification

By Sagar Gandhi on

Let us step ahead for some real world problem solving. Some History: Few days ago, while working on Gesture Recognition, one of the problems I faced was related to segmentation. I was trying to recognize hand gestures. Started off with classification of simple gestures - 1 finger, 2 finger .. 5 fingers, we created own dataset of images. This went off very smoothly, and accuracy of 85% plus was achieved. Then came a time to implement this in real time and I was stumped by a problem of segmentation. In real life scenario, with varying lighting conditions, segmenting human hand from background is a quite a challenging problem. There are various methods to do this. Our problem statement for this blog post is going to be one of the methods - Segmenting skin color from the given image.

Problem Statement

Read more

Machine Learning 3 : Prediction and its Traits

By Sagar Gandhi on

Let us begin. I am pretty excited about this post, here onward we start to learn how to do Machine Learning.
From whatever posts I have followed, somehow, people take an approach of first explaining the types of things one can do using Machine Learning, namely classification, clustering, etc.

Let us take a different path. Let us head straight to solve a problem and get our hands dirty. We will also, of course, come to a point where we will talk about types of problems that Machine Learning solves, but let us first get introduced to the problem solving.

Environment
We will be using Python, examples are tested with Python 3.5.
We need numpy, scipy and matplotlib packages. How to install these is not covered here, as that will drift us. You can install Anaconda, or follow along OS specific post for installation.

Problem Statement

Read more

Machine Learning 2.b : Applications

By Sagar Gandhi on

In the last post, we saw few applications of Machine Learning. continuing on the same grounds, more applications are presented in this post.

Just as a reminder, the point is to get us motivated enough so that we actually see how to do it ourselves.

(3)Marketing: In the age of globalization, bringing buyers and sellers together for mutually adventurous exchange is not an easy job. Simply because of the diversity of the influence factors, such as economic trends, social forces, political conditions, etc. Machine Learning is already so deeply involved that people cannot even imagine not using it for the Marketing.

  1. Market Research:

    Read more

Machine Learning 2.a : Applications

By Sagar Gandhi on

As promised last week, the question - Why should I care? will be addressed in this and the next, connecting post.
In general, what do you think, when do people care about something?
If something is having a direct or indirect impact on their lives, they usually care. Machine Learning has advanced the ability of human being to perform almost every GOFAI task in a smarter way.
There are many aspects like increased computation speed, data availability, affordable data storage, which can explain the rise of the Machine Learning era. But the most prominent one is the Practical Applications of Machine Learning. Simply put, it actually works in real life! It is being used by tens of thousands of companies, just to craft smarter machines.

Hence, rather than extrapolating reasons of why people are using Machine Learning, more fun is identifying where and why they are using it.

Read more

Machine Learning 1 : Introduction - What and How

By Sagar Gandhi on

Let’s get started. While working with people from different backgrounds, I came to an understanding that, overall, there are many misconceptions about Machine Learning.

One set of people think of Machine Learning as an area full of Mathematical jargon. On top of this thinking they either come close or keep a safe distance. Another group thinks this is highly advanced stuff, and they will not be able to pick it up. Therefore, they are too afraid to approach a problem Few people think of it as a magic box, which will chew in any data and produce some unrealistic results. From my experience, I also think that people who say ‘I know how to do it’ actually miss few fundamental things.

I think there is a need to think of this domain without having any biases, as well as understand and accept the fundamental rules.

Read more