search for: jgaseff

Displaying 2 results from an estimated 2 matches for "jgaseff".

2008 Feb 15
2
Quadratic Programming
Hi, I am using solve.QP (from quadprog) to solve a standard quadratic programming problem: min_w -0.5*w'Qw st ... I would like solve.QP to do two things: 1) to start the optimization from a user-supplied initial condition; i.e., from a vector w_0 that satisfies the constraints, and 2) to return the values of the lagrange multiplieres associated with the constraints. I did not find an obvious
2007 Jan 24
1
RODBC
Hello, I am fairly new to R and its connectivity to MS-Access. I just installed RODBC and it seems to be working well except when I use the date to condition the query. For example the query below sqlQuery(channel, "select date from tblUScpi where (date > d2) order by date") returns the following error [1] "[RODBC] ERROR: Could not SQLExecDirect"