Deep Learning vs Machine Learning
- Author Ajay Kapoor
- Published January 17, 2021
- Word count 1,278
Machine learning and deep learning are two subsets of artificial intelligence which have garnered a lot of attention over the past two years. If you’re here looking to understand both the terms in the simplest way possible, there’s no better place to be.
So if you’ll stick with me for some time, I’ll try to explain what really is the difference between deep learning vs machine learning, and how can you leverage these two subsets of AI for new and exciting business opportunities.
Deep learning vs Machine learning
Before I start, I hope you would be familiar with a basic understanding of what both the terms deep learning and machine learning mean.
Machine Learning for dummies:
A subset of artificial intelligence involved with the creation of algorithms which can modify itself without human intervention to produce desired output- by feeding itself through structured data.
Deep Learning for dummies:
A subset of machine learning where algorithms are created and function similar to those in machine learning, but there are numerous layers of these algorithms- each providing a different interpretation to the data it feeds on. Such a network of algorithms are called artificial neural networks, being named so as their functioning is an inspiration, or you may say; an attempt at imitating the function of the human neural networks present in the brain.
I tried to put those definitions in the simplest way possible, but even if it didn’t help you make out any differences, here’s an example that will.
Image via: https://www.datasciencecentral.com/profiles/blogs/dogs-vs-cats-image-classification-with-deep-learning-using
Here is a collection of images of dogs and cats. What happens when machine learning and deep learning networks have to make some sense out of it?
Have a look at the image above. What you’ll see is a collection of pictures of cats and dogs. Now, let’s say that you want to identify the images of dogs and cats separately with the help of machine learning algorithms and deep learning networks.
Deep learning vs machine learning basics - When this problem is solved through machine learning
To help the ML algorithm categorize the images in the collection according to the two categories of dogs and cats, you will need to present to it these images collectively. But how does the algorithm know which one is which?
The answer to this question, as in the above definition of machine learning for dummies, is structured data. You simply label the pictures of dogs and cats in a way which will define specific features of both the animals. This data will be enough for the machine learning algorithm to learn, and then it will continue working based on the labels that it understood, and classify millions of other pictures of both animals as per the features it learned through the said labels.
When the problem is solved through deep learning:
Deep learning networks would take a different approach to solve this problem. The main advantage of deep learning networks is that they do not necessarily need structured/labeled data of the pictures to classify the two animals. The artificial neural networks using deep learning send the input (the data of images) through different layers of the network, with each network hierarchically defining specific features of images. This is, in a way similar to how our human brain works to solve problems- by passing queries through various hierarchies of concepts and related questions to find an answer.
After the data is processed through layers within deep neural networks, the system finds the appropriate identifiers for classifying both animals from their images.
Note: This is just an example to help you understand the differences in the way how machine learning basics and deep learning networks work. Both deep learning and machine learning are not actually simultaneously applicable to most cases, including this one. The reason for the same will be explained later as you read.
So in that example, we saw that a machine learning algorithm required labeled/structured data to understand the differences between images of cats and dogs, learn the classification and then produce output.
On the other hand, a deep learning network was able to classify images of both the animals through the data processed within layers of the network. It didn’t require any labeled/structured data, as it relied on the different outputs processed by each layer which amalgamated to form a unified way of classifying the images.
What have we learned here:
The key difference between deep learning vs machine learning stems from the way data is presented to the system. Machine learning algorithms almost always require structured data, whereas deep learning networks rely on layers of the ANN (artificial neural networks).
Machine learning algorithms are built to “learn” to do things by understanding labeled data, then use it to produce further outputs with more sets of data. However, they need to be retrained through human intervention when the actual output isn’t the desired one.
Deep learning networks do not require human intervention as the nested layers in the neural networks put data through hierarchies of different concepts, which eventually learn through their own errors. However, even these are subject to flawed outputs if the quality of data isn’t good enough.
Data is the governor here. It is the quality of data which ultimately determines the quality of the result.
What we didn’t see in the example, but are important points to note:
Since machine learning algorithms require labeled data, they aren’t suitable to solve complex queries which involve a huge amount of data.
Though in this case, we saw the application of deep learning networks to solve a minor query such as this one. The real application of deep learning neural networks is on a much larger scale. In fact, considering the number of layers, hierarchies, and concepts that these networks process, they are only suited to perform complex calculations rather than simple ones.
Both these subsets of AI revolve around data in order to actually deliver any form of “intelligence”. However, what should be known is that deep learning requires much more data than a traditional machine learning algorithm. The reason for this being that it is only able to identify edges (concepts, differences) within layers of neural networks when exposed to over a million data points. Machine learning algorithms, on the other hand, are able to learn through pre-programmed defined criteria.
So with that example and subsequent explanation of deep learning vs machine learning basics, I hope you would have understood the differences between both of them. Since these are layman explanations, I try my best to not introduce technical terms which are mostly incomprehensible to those looking to leverage AI and machine learning development for their business.
Now its time to hammer the final nail. When should you actually use Deep learning or machine learning in your business?
When to use deep learning?
If you’re a firm with boatloads of data to derive interpretations from.
If you have to solve problems too complex for machine learning.
If you can spend a lot of computational resources and expenses to drive hardware and software for training deep learning networks.
When to use Machine learning development for your business?
If you’ve data that can be structured and used to train machine learning algorithms.
If you’re looking to leverage benefits to AI to surge ahead of the competition.
The best machine learning solutions can help in the automation of various business operations, including identity verification, advertising, marketing, and information gathering and help leverage great opportunities for the future.
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