The World of Mathematics
I recently started reading “The World of Mathematics” book by J.R. Newman. Here, I collect some of my favorite paragraphs from this book.
Chapter 13: Srinivasa Ramanujan
- “He would probably have been a greater mathematician if he had been caught and tamed a little in his youth; he would have discovered more that was new, and that, no doubt, of greater importance. On the other hand, he would have been less of a Ramanujan, and more of a European professor and the loss might have been greater than the gain.“
Chapter 11: The Prince of Mathematicians (Gauss)
- “Gauss resolved to follow their [Archimedes and Newton] great example and leave after him only finished works of art, severely perfect, to which nothing could be added and from which nothing could be taken away without disfiguring the whole. The work itself must stand forth, complete, simple, and convincing, with no trace remaining of the labor by which it had been achieved. A cathedral is not a cathedral, he said, till the last scaffolding is down and out of sight. … Few, but ripe.”
- “Shortly after his seventh birthday Gauss entered his first school, …. run by a virile brute, one Buttner, whose idea of teaching the hundred or so boys in his charge was to thrash them into such a state of terrified stupidity that they forgot their own names.”
- ” ‘He is beyond me,’ Buttner said; ‘I can teach him nothing more’ …. “
@todo : Wait for some more amazing paragraphs about the beautiful minds.
Journey of three tulips from 2011 to 2012
This year, my university turned 50 and I received three red tulip seeds as a gift. I planted the three tulip seeds yesterday and am eagerly waiting for April/May 2012 when these tulips will bloom. These red tulips will definitely be a beautiful reminder of the year that was left behind.
Happy New Year and best wishes for this new year to bring happiness and good health to everybody.
Last Updated: Mar. 10, 2012. First Published On: Dec. 28, 2011
Quotations: powerful and concise thoughts of the giants
“Common, skip the sections that seem less important“, I consoled myself while frantically preparing for the final board exams of Class XII. The syllabus for Physics and Chemistry were huge. Therefore, my study pattern got more careless as the shadow of the exam conspired for a war with my ignorance.
I stayed in the student hostel during Class XI/XII study at DPS (Dharan, Nepal). Frequent study breaks were a good way to recharge during those days of intensive exam preparation. During one such study break, I noticed the following anonymous quotation written on one of my friends study desk:
Skipping steps gives the illusion of speed.
It was like a traffic sign warning me of the consequences of my frantic exam preparation. Now I realise that I would also have been a casualty of “skipping steps” had I not seen this quotation.
In this blog post, I plan to keep a record of all such powerful and concise thoughts (without the related background story 
)
- Organizers didn’t make any money; their poverty was proof of their integrity. – Barack Obama
- Only those who will risk going too far can possibly find out how far one can go. – T. S. Eliot
- There is no revenge so complete as forgiveness. – Josh Billings
- He was ignorant of the commonest accomplishments of youth. He could not even lie. – Mark Twain
- If I have been able to see further, it was only because I stood on the shoulders of giants. – Isaac Newton
- The world seems full of randomness but everything is planned. – Anonymous
- I don’t know the key to success, but the key to failure is trying to please everybody. – Bill Cosby
- If I had six hours to chop down a tree, I’d spend the first four hours sharpening the axe. – Abraham Lincoln
- Fatigue is the best pillow. – Benjamin Franklin
- By the time a man realizes that his father was right, he usually has a son who thinks he’s wrong. – Charles Wadsworth
- Childhood is measured out by sounds and smells and sights, before the dark hour of reason grows. – John Betjeman (From Movie: The Boy In The Striped Pyjamas)
- You have enemies? Good. That means you’ve stood up for something, sometime in your life. – Winston Churchill
- I would have written a shorter letter, but I did not have the time. – Blaise Pascal
- The moderns do not realize modernity. – G.K.Chesterton
- First they ignore you. Then they laugh at you. Then they fight you. Then you win. – M. K. Gandhi
I feel that quotations are the best way to convey wisdom. I will keep adding more interesting quotations to this blog post. Visit wikiquote if you want to explore this powerful medium of conveying wisdom.
Last Updated:Apr. 26, 2012
Frustrations from the current state-of-the-art in automatic face recognition.
For the past few weeks, I have been carrying out some forensic face recognition experiments based on the CMU MultiPIE dataset. The objective of these experiments is to test a new framework for forensic face recognition. Therefore, in these experiments, I use a commercial face recognition system as a “black box”. In other words, in these experiments, I am not concerned with how this commercial face recognition system works but I aim to present a framework for applying automatic face recognition systems to forensic cases.
Today, I finished the last part of the experiment and I feel so frustrated from the results that I have decided to express my frustrations in this blog post. To be honest, I had never been so frustrated in the past few years.
I have the following appeal to all the researchers (including myself) involved in face recognition:
- Try to venture outside the comfort zone of controlled face image dataset. Most face recognition algorithm developers feel safe to test their algorithms using only standard face image dataset captured in controlled (pose, illumination, etc) environment. Please have the courage to test algorithms on uncontrolled images and face the reality.
- Stop pursuing research to improve face recognition accuracy from 96% to 98% on a controlled face image dataset. We have already lost the past decade doing such incremental research.
- Stop using idiosyncratically chosen facial features which can hardly be attributed to an individual’s identity. Such rouge facial features are often found wandering in the feature space when subject to facial pose and illumination variation.
It is not difficult to understand why the professionals involved in forensic face recognition cases prefer to use trained human experts for face matching. Today’s frustration has a bright side as well. I now feel happy to be exploring a dilapidated research avenue. Not only more reasons to be frustrated but also more reasons to try out new ideas and challenge the conventional wisdom.
PhD Research Activity Level
- PhD Year 1 Activity (Last Updated: 29 Jul 2011)
Caution: This plot is just for fun and should not be taken seriously. I did it when I got bored with my research one weekend 
I have meeting with my supervisors after every two weeks (bi-monthly meetings). I email the meeting agenda to my supervisors before every meeting. After finishing the meeting, I again email the meeting minutes (summary of important discussions during the meeting) to my supervisors. I have done this for last 6 months and I suddenly realised that I can use this data to assess the research activity level during my PhD.
The agenda and minute of each meeting has a set of bullet points. The number of bullet points corresponding to agenda and minute of each meeting represents the level of my research activity in the past two weeks before that meeting date. If I am very active and working hard on some research topic, the next meeting is bound to have a lot of bullet points corresponding to related discussion during the meeting. I use this count of meeting activity as a way to estimate my research activity. It is interesting to see that these plots somehow succeeded to depict the amount of work that I have been doing during my PhD research.
This way of measuring research activity has some serious limitations:
- Not all bullet points in agenda and minute have same weight. Some points in agenda can take about one hour to discuss while others can be resolved in just few minutes. Therefore, it is not fair to attribute equal contribution of each bullet point towards overall research activity level.
- Serious discussion on a topic during meetings requires very good understanding of different aspects of that research topic. Developing such a level of understanding can take several weeks. Therefore, the underlying assumption that activity during a meeting is a result of work done in the past two weeks is not always true.
In spite of these limitations, I decided to create this plot because it gives a good (although not very accurate) overview of my PhD research activity. I am waiting for the last meeting at the end of my PhD and wondering how such a plot for 4 years would look like.
Mind Without Fear
Where the mind is without fear and the head is held high;
Where knowledge is free;
Where the world has not been broken up
into fragments by narrow domestic walls;
Where words come out from the depth of truth;
Where tireless striving stretches its arms towards perfection;
Where the clear stream of reason
has not lost its way into the dreary desert sand of dead habit;
Where the mind is led forward by thee into ever-widening thought and action—
Into that heaven of freedom, my Father, let my country awake.
Source: Gitanjali: Selected Poems
Value of Time
Time is valuable in its every unit. This fact is beautifully portrayed by this poem which appeared in the August 2005 issue of the WISDOM India magazine. Some poems, stories and thoughts had a very strong impact on me. This poem is one of them.
To realize the value of one year
Ask a student who has failed in his exam.
To realize the value of one month
Ask a mother who has given birth to a premature baby.
To realize the value of one week
Ask an editor of a weekly.
To realize the value of one day
Ask a daily wage labourer.
To realize the value of one hour
Ask the lovers who are waiting to meet.
To realize the value of one minute
Ask the person who has missed the train.
To realize the value of one second
Ask the person who has survived in an accident.
To realize the value of one milli second
Ask the person who has won the silver medal in Olympics.
Project publicities during undergraduate engineering days
Today I visited the Pulchowk Campus (the college where I studied for my undergraduate engineering degree). I was amazed to see these posters on the notice board.
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- Notice board near the stairs to the library.
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- Notice board near the CIT (Center for Information Technology) room
I had put these posters few years ago to publicize the launch of two of our projects : iSnake and uIOE. I had never imagined that these posters will stick to their original position for such a long time. The vibrant community of students post a large number of posters and notices regularly on these campus notice boards. So I had thought that my project publicity posters would get covered by these new posters and notices.
Thanks to all the students at Pulchowk Campus for not removing my posters. This is probably the reason why these projects websites still get a large number of visitors. I still retain the original electronic version of these posters: iSnake launch poster, uIOE launch poster. I smiled with great joy and had nostalgia when I saw these fading posters stick to their original place. A wonderful and unexpected experience.
Hello world!
On June 14, 2010 I wrote the following in my research log book :
as the ambient occlusion remains same in all the 4 images, why don’t they cancel out when we compute the ratio images?
In research, it is said that, “Asking the right question is the first step towards finding solution to a problem”. Little did I know that with this question in mind, I had embarked on a 78 days journey (from Mon. Jun 14, 2010 to Mon. Aug 30, 2010) of adventure that involved lots of joy and sorrow almost every day and more importantly, my first experience of being a “child playing on a seashore“.
I am writing this blog on Aug 30, 2010 and it was on Fri. Aug 27, 2010 when we (me and my supervisor) submitted our paper, “Minimal Image Sets for Robust Spherical Gradient Photometric Stereo” for the Technical Sketches & Posters program of SIGGRAPH Asia 2010. Yesterday, we uploaded a 6min 30sec video (MP4, YT) that explains our research and our submission is complete now. Although, I am not sure if the paper will be accepted for publication, I am very happy to have this wonderful experience that one gets when doing something for the first time. I couldn’t live without telling this incredible story to you. Moreover, in 10 or 20 years time, I would not remember this story with the clarity that I do now. I know that I will enjoy reading this post myself in the future and these words will help me cherish the first adventure of my research career.
This is my story as a researcher and I will present it in my blog in the future. This is a reason why I have started this blog. I have suddenly realized that blogging is a great way to share my experiences and write down them as stories so that whenever I feel nostalgic about those moments, I can read my blog to cherish those moments.
At present, I can think of the following stories :
- A boy starting to play on the seashore
- Finished learning to lose. Now its time to learn to win
- Machapuchhre – when I started learning from my failures
I will post these stories in my future blog posts. Bye
Update: Our technical sketch was accepted for the SIGGRAPH Asia 2010 conference.
