De Econometrist neemt een statistische kijk op de wereld.
Introduction Historically the use of models has been relatively rare, however nowadays they are far more common. The sentiment towards more data-driven decision making has led to an ever-increasing impact of models. The steps to implementing a model go as follows: Firstly, a model needs to be developed and calibrated to the training dataset, after this the model is implemented and used. When the model is in use it should be tested on a regular basis. If testing shows significantly deteriorating model performance the sequence of actions will be repeated. This process is called the […]
This is one of the most difficult riddles I have ever encountered. It does not require a lot of mathematical skills, but you certainly have to have some intuition in solving riddles. This riddle is called “The 100 prisoners problem”. Do you have what it takes to solve this challenge? Problem 100 prisoners are given the chance to be released from prison. Their names will be put in 100 different labelled wooden boxes. These boxes are labelled with the names of the prisoners, but the name in the box is never the same as the […]
Pythagoras of Samos (572-500 BC) was one of the first famous mathematicians. He is probably best known for the Pythagorean theorem, even though he left no mathematical writings himself. Much of what we now know of Pythagoras comes from the writings left by his followers. These followers, the Pythagorean, were not just common scholars, for them Pythagoras was a spiritual leader. The foremost axiom of Pythagoras’s school was “All is number” or “God is Number”. The Pythagorean thought was based on the idea that numbers are the underlying substance of reality and Pythagoras taught his […]
I was looking to leave an impact, not to upgrade my CV. Thankfully, AIESEC let me do both. “My experience taught me more than any book could ever teach me, some things have to be seen in person.” As a second year business student, I knew it was time for me to start filling my summers with something more meaningful than just vacation, but I refused to just work at any big corporation and be one of many. I am a member of AIESEC myself, and when my colleagues started to promote start-ups in Brazil, I was […]
Exams… the period leading up to the exams is one in which time seems to fly by even though the work never seems to be finished. Now there are only a few days left before the exams and the amount of things you still need to do is much higher that you would have hoped. Because of this, it is important to be very productive in these last days. But how can you be more productive? And how does your productivity increase, biologically speaking? – Esther Valkonet
Imagine you are working on a top secret project and you have to send a message containing confidential information concerning the project. How can you make sure the message won’t be read by any other eyes than those of the addressee? A message that changes itself when read by anyone who is not supposed to, sounds like everything you need. Is this the future? No. It already exists. The quantum computer brings not only this, but also many other incredibly useful possibilities. What are quantum computers, and how can they shatter our present-day digital defences? Encryption Digital security, […]
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New year, new me, right? Did you already think of some New Year’s resolutions or did you think it was better to not start with this trouble to prevent yourself from disappointment? I don’t blame it on you if you chose the second option, because research has shown that 80% of the New Year’s resolutions have failed by the second week of February. This is because people don’t set realistic goals or don’t even start. To help you I listed 5 New Year’s resolutions that are achievable and will give you more energy and less stress. Ready […]
Imagine you are walking past a muddy pool on your way to work and you see a child drowning in the pool. You realize that if you want to save the child, you would not only ruin your outfit, but you will also be late for work.. Probably without doubt, you would conclude that the life of a child far outweighs that consequences, and you would save the child. We all feel the obligation to save someone’s life if it only costs us the purchase of a new outfit and an hour of our time. […]
In different sectors, companies reckon more than ever the econometrician is a valued employee. Firms striving for innovation and a data driven approach nowadays, will hire a data analyst at some point, in order to derive significant outcomes. Through research, solutions yield more efficient, faster and less costly improvements. The financial sector, strategy consultancy and actuary invest in such way, the company knows an entire team of data analysts. But did you ever wonder how an econometrician can do his work in the humanitarian sector and at which companies this is possible? A different path […]
In 2009 begint in Londen een klein experiment met 13 daklozen. De groep zwerft al tientallen jaren rond in The Square Mile, het financiële hart van de stad. Hun verblijf heeft een flink prijskaartje: kosten van politie, justitie en zorg worden op minstens 400.000 pond per jaar geschat. Broadway, een lokale hulporganisatie besluit dat het zo niet langer kan en gooit het roer drastisch om. In één klap krijgen de zwervers zonder voorwaarde 3.000 pond per persoon, op kosten van de belastingbetaler. Het enige wat de zwervers hiervoor hoeven te doen is de vraag beantwoorden: […]
Op het moment wordt de data van meer dan 90.000 voetbalspelers, 3500 voetbalclubs en 2000 wedstrijden per week bijgehouden. Dit zorgt natuurlijk voor enorm veel mogelijkheden om die data te analyseren en nuttige informatie eruit te halen. Misschien wordt het zelfs mogelijk de scouts te vervangen door een model die de meest geschikte speler voor een bepaalde voetbalclub genereert. Waar moeten we naar kijken in zo’n model en zal dit echt de voetbalwereld kunnen veranderen? Een bedrijf dat zich al een paar jaar op deze data analyses in het voetbal focust, is SciSports. Dit bedrijf […]
De redactie van De Econometrist bestaat momenteel uit 12 leden die samen een hechte groep vormen. Regelmatig onderneemt de groep leuke activiteiten. Als je alle redacteurs wilt zien kijk dan op de redactie pagina.