umar's coding blog

Few days ago I hacked around a little library for generating web pages in haskell.  I want to talk about it a little because it done in a 'type-oriented' way i.e. i wrote the algebraic datatypes first, and then proceeded with the 'code' that does anything. Having watched a few videos on category theory for hackers, this means i defined objects (in the category theory sense) first, and then wrote morphisms to translate between them (functions in the haskell). I started with the XML type. As can be seen, it's a thing, that contains other things (elements). These things can have some attached key-value pairs (attributes), and also a list of other those things (it's a recursive structure), or a piece of text. In other words, it's a tree, with the leaves being text, and the nodes can have attached key-value pairs. Next the HTML type HTML is also a tree like XML, but has a greater variety of nodes. as listed in the definit of Element. There are things like breaks,...

 I downloaded datase form kaggle. It has age gender, ethnicity labels for photos of people's faces. I downloaded it because it's small and straightforward. I'm going to attempt to see how far accuracy i can get using a combination of straight forward linear regression using vowpal wabbit and feature engineering haskell. I have some ideas I want to try out on it. like  introduction of noise at various levels (it might be what are known as diffusionmodels, though i'm not completely sure thatis what they are).