Image for post
Image for post
“Intelligence, Environment and Human Mind” — A drawing by the Author

“The life of inner peace, being harmonious and without stress, is the easiest type of existence

— Norman Vincent Peale

Unlike my other articles in this blog, I’m going to keep this short and simple. This is the only message I would like give you all in this new year to find inner peace to the best level possible. Inner peace is closely related to happiness. From Buddhist philosophy to Mahatma Gandhi and the Dalai Lama, they have all been strong proponents of inner peace.

First all, we must understand that life is not fair and it will most probably try to disarm you every step of the way. This whole article is targeted on giving you the insight on how it can be tackled just by keep reminding yourself a small phrase. It took me close to 5 years to achieve this mentality and hack “the way I think about the meaning of life”, because let’s face the truth, doesn’t matter how good you know about the way of life and how matured you face the “not so great situations”, we still tend to do the same mistakes over and over and make a mess. …


Introduction

Mathematical modelling and their predictions are used in many fields in the present and the same strategy comes in handy in studying the nature and growth of pandemics as well. Studying the exponential growth, behavioural patterns of the society, modelling the strength of such a disease are some examples for similar use cases. ‘Basic Reproduction Number — (R0)’ is one such parameter that is described in epidemiology which can be used to model, describe and predict the current status of a pandemic. …


Image for post
Image for post
A non-deterministic continuous signal [Matlab representation of an audio clip] — (Image was created by the author)

“Visualization gives you answers to questions you didn’t know you had” — Ben Schneiderman

[ Please not that the first part of the article is focused on providing the basic background knowledge required to understand “what dithering is”. Those who have the adequate knowledge can skip Part — I. ]

[ Part — I ]

Data Representation

Before moving on to more theoretical concepts lets take a look at how we represent data and visualize them. Lets assume that you are watching a movie on your computer or a YouTube video on your phone. As you know we can change the quality of the video being played to our preference. By choosing a quality level of 720p/HD/UHD/4k, you get a higher quality visual feed and a higher data consumption and by choosing 240p, 360p,480p you sort of get the opposite. As you may know this happens due to the representation or specifications of each method. The more data points that you have (better quality visuals), the more memory or data you consume. This is general knowledge and as you might already know this trade-off between the quality & the memory requirement is a fascinating area to research. Even though I took “video-stream/storage” as the example, which is easier to explain, the same scenario is present in audio, image quality and other compression systems. …


Image for post
Image for post
Image was created by the author

A few weeks back, I stumbled upon an interesting word. A word that carried great meaning as well as a slightly sophisticated connection to some of the concepts that I will address in this article. This article was written to show how deep we can think & discuss even the most regular random thoughts if we give enough attention.

Part I — Sonder

Noun. sonder (uncountable) (neologism) The profound feeling of realizing that everyone, including strangers passed in the street, has a life as complex as one’s own, which they are constantly living despite one’s personal lack of awareness of it. Source — Wiktionary

“What is it with everybody?”. Every time I took the bus back home from high school & tuition, I used to observe everyone I see on the way & ponder upon the above question. I used to wonder what sort of a person he/she is (One can argue that I was being captious to a certain extent). In the meantime, I used to observe their emotions & wonder what could be troubling this person right now. …


Image for post
Image for post

Let’s start from the beginning. I am a person who is curious about the things that I do not learn in college as well as the things I do. Neuroscience and how the brain functions has been one of those passions of mine and I used to watch many documentaries about all sorts of experiments and new research in that field. Even though I am an Electronic & Electrical Engineering student, the more I dug into the enigmatic wonders of our brain the more I fell in love with how beautiful our nervous system is and understood how fortunate we are to be gifted with such a wonderful combination of chemicals and functions. …


Image for post
Image for post
Image Source — https://bitsofunderstanding.wordpress.com/about/

In telecommunication the data is transmitted through different types of channels. These channels could be unreliable and noisy due to faulty transmission systems and lines. So the data (bits) transmitted over the computer network could get corrupted due to these network problems & interference. The resultant corrupted bit sequences lead to changes i.e faults in the data received by the receiver.

While the situation was like this in the fIrst half of the 20th century, American mathematician Richard Hamming came up with the first effective algorithm for error detection and correction in 1950, the “Hamming (7,4) code”.


Demon? From the Bible to the fantasy novels/movies, this creature can be seen frequently in literature and other types of art. Honestly I never thought I’d come across this mythical creature or even something similar, in the “world of science” until last month. When I did, not only I was shocked by the name of the creature but also by the scientist who came up with the concept.

Image for post
Image for post
Pierre-Simon Laplace

Pierre-Simon Laplace was a French scholar whose work was important to the development of engineering, mathematics, statistics, physics, astronomy, and philosophy. If you’re related of any of these fields mentioned above, you should be well familiarized with his contributions. He’s well known for his contributions in “Bayesian interpretation, Laplace’s equation & Laplace transform, Laplacian differential operator, the nebular hypothesis postulating the existence of black holes and the notion of gravitational collapse. He’s also known as the French Newton or Newton of France. In 1796, Laplace famously published his Exposition of the System of the World, which outlined the mathematical details of what has come to be known as the nebular hypothesis, the theory that the solar system formed billions of years ago from a quickly rotating nebula, or interstellar gas cloud, and that the planets and the sun coalesced from this rotating mass in accordance with the mechanical laws of nature. …


This story can be helpful to the students who need a better understanding about the very basics of Deep Learning & as well as to the students who look for different tips on how to improve their studies. Some of these are patterns which I recognized when I first started studying Deep Learning concepts.

Neuron & Perceptron

Image for post
Image for post
Similarity Between Neurons & Perceptrons

Lets start from the very beginning. A neuron is the fundamental unit which the brain is built. There are over 100 billion neurons inside a human brain. Neurons are responsible for everything that we do. Our conscious & subconscious is controlled by these small power stations. A perceptron is the same as a neuron. Its the basic building block of artificial intelligence. As you can see above it also has an array of inputs, which is later processed in order to present the output. In a more technical manner we name the perceptron as a “Binary Classifier” because it has the ability to classify data into two categories. When this is implemented in multi layer level we call them “neural networks”. Lets learn about that latter part of the article. …


Image for post
Image for post

“However ordinary each of us may seem, we are all in some way special, and can do things that are extraordinary, perhaps until then…it was even thought impossible.”― Sir Roger Bannister

Before 1954 running a mile under 4 minutes was considered a godly job. Did you know that men tried to break this 4 minute barrier for over a thousand years? There are legends about men who had put furious bulls chasing behind them during the race to increase the possibility of doing the impossible. Experts said it couldn’t be done. …


This is not a typical motivational story! It’s about using your brain to differentiate hope from idiocy ;)

Image for post
Image for post

Hope. What is hope? When I ask this question you might say it is the idea or the thought that makes us believe that an event will give out an expected result. If you’re a student you hope for good grades, if you’re a farmer you hope for a good harvest, if you’re a writer you hope many people will read and love your stories. But a week ago I realized that there’s a whole new side of “hope”. A side which most people use for both good and bad.(Isn’t that the reality of almost everything? …

About

Isuru Pamuditha

Ponder & Wonder... That'll make you an interesting person || Engineering Undergraduate ||

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store