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 # Decision Tree
 
-A Ruby library which implements ID3 (information gain) algorithm for decision tree learning. Currently, continuous and discrete datasets can be learned.
+A Ruby library which implements [ID3 (information gain)](https://en.wikipedia.org/wiki/ID3_algorithm) algorithm for decision tree learning. Currently, continuous and discrete datasets can be learned.
 
 - Discrete model assumes unique labels & can be graphed and converted into a png for visual analysis
 - Continuous looks at all possible values for a variable and iteratively chooses the best threshold between all possible assignments. This results in a binary tree which is partitioned by the threshold at every step. (e.g. temperate > 20C)
 
 ## Features
 - ID3 algorithms for continuous and discrete cases, with support for inconsistent datasets.
-- Graphviz component to visualize the learned tree (http://rockit.sourceforge.net/subprojects/graphr/)
-- Support for multiple, and symbolic outputs and graphing of continuos trees.
+- [Graphviz component](http://rockit.sourceforge.net/subprojects/graphr/) to visualize the learned tree 
+- Support for multiple, and symbolic outputs and graphing of continuous trees.
 - Returns default value when no branches are suitable for input
 
 ## Implementation
 
-- Ruleset is a class that trains an ID3Tree with 2/3 of the training data, converts it into a set of rules and prunes the rules with the remaining 1/3 of the training data (in a C4.5 way).
+- Ruleset is a class that trains an ID3Tree with 2/3 of the training data, converts it into a set of rules and prunes the rules with the remaining 1/3 of the training data (in a [C4.5](https://en.wikipedia.org/wiki/C4.5_algorithm) way).
 - Bagging is a bagging-based trainer (quite obvious), which trains 10 Ruleset trainers and when predicting chooses the best output based on voting.
 
-Blog post with explanation & examples: http://www.igvita.com/2007/04/16/decision-tree-learning-in-ruby/
+[Blog post with explanation & examples](http://www.igvita.com/2007/04/16/decision-tree-learning-in-ruby/)
 
 ## Example
 
@@ -68,4 +68,4 @@ puts "Predicted: #{decision} ... True decision: #{test.last}"
 
 ## License
 
-The MIT License - Copyright (c) 2006 Ilya Grigorik
+The [MIT License](https://opensource.org/licenses/MIT) - Copyright (c) 2006 Ilya Grigorik