What is a random number and why should I care - Frances Buontempo - Meeting C++ 2023
Ғылым және технология
What is a random number and why should I care - Frances Buontempo - Meeting C++ 2023
Slides: slides.meetingcpp.com
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How can a deterministic function possibly give random results? We will find out and learn how to use various random number distributions.
Most of us need a random number at some point if we write code. We will discover how they are generated. We will see how to ensure simulating a dice roll makes the numbers 1 to 6 equally likely, and note some pitfalls to be aware of when shuffling, sampling and even seeding when using random number generators.
We will have a brief aside into stochastic outcomes from deterministic models, also known as chaos. Applying a function iteratively can’t possibly give non-deterministic results, right? We shall see. After this aside, we will return to using random numbers.
By the end we’ll be familiar with terms like pseudorandom number generator (PRNG), linear congruential generator and random number distributions. Finally, we’ll use various distributions to race some blobs out of a paper bag. Seeing a visual demonstration will solidify some the learning outcomes.
Пікірлер: 2
Great talk! Well done, and thank you!
37:05 - Interesting Example. I taught my students that in C# the Random class actually took the time, so in order to make it work you need to initialize an instance and reuse the same instance. Or else you'll be getting bugs because it generates the same number.