User:Karthik0112358
C S Karthik is an undergraduate at IIT-Bombay and is working on addition of an rSQP optimiser for ASCEND during GSOC2011.
Goals
Progress reports
Prior to May 23:
Related to rSQP:
- Started reading Mathematical and High-Level Overview of MOOCHO. However was later redirected to chapter 12 (Nonlinear programming) of "Operations Research: Applications and Algorithms" from Winston, 1994, 3rd (or a later) Ed., Duxbury Press (Belmont, California) as a preliminary reading for mathematical background.
- Completed reading chapter 12 (Nonlinear programming) of "Operations Research: Applications and Algorithms".
- Re-reading Mathematical and High-Level Overview of MOOCHO.
- Revisited theory behind the Simplex Algorithm from "Introduction to Algorithms", 3rd Edition, Page 864-879 authored by Cormen, Leisersin, Rivest, Stein.
Related to Radau5:
- Investigated code ascend/integrator/integrator.h and ascend/integrator/integrator.c to understand the data structures used.
- Devised and tried implementation of various for the mass matrix problem in solvers/radau5/asc_radau5.c.
- Settled on the idea of replacing neq with total number of equations as compared to the previous implementation of number of states.
May 23 - May 29
- Continue reading Mathematical and High-Level Overview of MOOCHO.
May 30 - June 5
- Completed reading Mathematical and High-Level Overview of MOOCHO.
June 6 - June 12
- Finding a temporary fix for the mass matrix problem. I have split the task as to finding solution to 2 problems:
(i) Making sure algebraic equations are being sent to solver.
(ii) Writing a feasible mass matrix function to generate the mass matrix. This depends on (i).
Regarding Solving Part (i), I made an outside link and was able to capture all the variables involved. Trying to use them to find total number of equations. In completing part (ii) I am facing "INSUFFICIENT MEMORY" problem. Trying to fix that too. I am at present able to count total number of variables, solver variables, independent variables and number of differential equations. I would like to figure out a way to count number of free variables.