update week 45

doc/src/week45/week45.do.txt

@@ -2,6 +2,20 @@ TITLE: Week 45: Random Forests and Boosting
 AUTHOR: Morten Hjorth-Jensen {copyright, 1999-present|CC BY-NC} at Department of Physics, University of Oslo & Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University
 DATE: today
 
+!split
+===== Overview of week 45 =====
+
+* "Thursday: Wrapping up from last week. Bagging and Random forests.
+* "Friday: Boosting and gradient boosting
+
+
+Geron's chapter 7. See also lecture from "STK-IN4300, lecture 7":"https://www.uio.no/studier/emner/matnat/math/STK-IN4300/h20/slides/lecture_7.pdf". Chapter 9.2 of Hastie et al contains also a good discussion.
+
+
+!split
+===== Thursday =====
+
+Bagging, voting and random forests.
 
 
 !split