Publications by Hello, world! My name is Justin.
Deep (learning) like Jacques Cousteau – Part 2 – Scalars
(TL;DR: Scalars are single numbers.) I have so many scalars! Opie, the open source snake I’m sorry…that was lame… Me Last time, we covered some basic concepts regarding sets on our journey to understanding vectors and matrices. Let’s do this! Today’s topic: Scalars What’s a scalar? A scalar is a single number! This seems very si...
4098 sym R (159 sym/4 pcs) 4 img
Deep (learning) like Jacques Cousteau – Part 3 – Vectors
(TL;DR: Vectors are ordered lists of numbers.) LaTeX and MathJax warning for those viewing my feed: please view directly on my website for MathJax goodness! Sector, vector, the lyric inspector X-Ray vision, power perfector Kool Keith from ‘MC Champion’ by Ultramagnetic MC’s Last time, we learnt about scalars. We’ll now start learning ab...
3322 sym R (354 sym/6 pcs) 5 img
Deep (learning) like Jacques Cousteau – Part 4 – Scalar multiplication
(TL;DR: Multiply a vector by a scalar one element at a time.) LaTeX and MathJax warning for those viewing my feed: please view directly on website! We build, we stack, we multiply Nate Dogg from ‘Multiply’ by Xzibit Last time, we learnt about vectors. Before that, we learnt about scalars. What happens when we multiply a vector by a scalar? ...
2081 sym R (217 sym/6 pcs) 4 img
Deep (learning) like Jacques Cousteau – Part 5 – Vector addition
(TL;DR: You can add vectors that have the same number of elements.) LaTeX and MathJax warning for those viewing my feed: please view directly on website! You want to know how to rhyme, you better learn how to add It’s mathematics Mos Def in ‘Mathematics’ Last time, we learnt about scalar multiplication. Let’s get to adding vectors toget...
5199 sym R (160 sym/4 pcs) 4 img
Deep (learning) like Jacques Cousteau – Part 6 – Dot products
(TL;DR: Start with two vectors with equal numbers of elements. Multiply them element-wise. Sum the results. This is the dot product.) LaTeX and MathJax warning for those viewing my feed: please view directly on website! Hmmm…this is a tricky one! Uhhh…did you know that Kendrick Lamar’s stage name used to be “K.Dot”? Moi Last time, we ...
3445 sym R (153 sym/5 pcs) 3 img
I walk the (train) line – part quatre – Tell me why
(TL;DR: Dijkstra’s algorithm is correct. Mathematical proof inside <3<3<3) LaTeX and MathJax warning for those viewing my feed: please view directly on website! This is part four of our epic. Find the other parts here: Part one Part two Part three Last time, we learnt about Dijkstra’s algorithm and implemented it in R. We found the shortest...
9924 sym R (804 sym/6 pcs) 4 img
Deep (learning) like Jacques Cousteau – Part 7 – Matrices
(TL;DR: matrices are rectangular arrays of numbers.) LaTeX and MathJax warning for those viewing my feed: please view directly on website! I wanted to avoid a picture related to the film franchise! Me Last time, we learnt about dot products. We will now finally start talking aobut matrices. Today’s topic: Matrices – a primer We know what r...
5460 sym R (1120 sym/11 pcs) 3 img