Say you have a <- c(1,3,5,7,9) b <- c(3,6,8,9,10) c <- c(2,3,4,5,7,9) A straightforward way to do the job is: intersect(intersect(a,b),c) More cleverly, and more conveniently if you have a lot of arguments: Reduce(intersect, list(a,b,c)) The Redu…
What Is It? A hash table, or associative array, is a well known key-value data structure. In R there is no equivalent, but you do have some options. You can use a vector of any type, a list, or an environment. But as you’ll see with all of these opti…
The author has a course on web: http://brickisland.net/DDGSpring2016/ It has more reading assignments and sliders which are good for you to understand ddg. ------------------------------------------------------------- DISCRETE DIFFERENTIAL GEOMETRY :…
[Game Engine Architecture 5] 1.Memory Ordering Semantics These mysterious and vexing problems can only occur on a multicore machine with a multilevel cache. A cache coherency protocol is a communication mechanism that permits cores to share data betw…
##Linear Regression with One Variable Linear regression predicts a real-valued output based on an input value. We discuss the application of linear regression to housing price prediction, present the notion of a cost function, and introduce the gradi…
An Overview: System of Linear Equations Basically, linear algebra solves system of linear equations (where variables/unknowns are linear with power of 1). Our aim is to find a vector solution which satisfy a system of linear equations, which is a col…
