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Rating Stats for

Erwin Kalvelagen

Rating
1542.23 (10,766th) 		Reputation
5,194 (31,883rd)
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Title Δ
Convex optimization in R with sqlp function 0.00
AMPL Cplex error: QP Hessian is not positive semi-definite 0.00
Mixed Integer Linear Programming in R 0.00
How to minimize an quadratic objective function with constraint vio... 0.00
MIP/LP - Modelling "if b=1 then x=y" constraint 0.00
How to solve a system of linear equations over the nonnegative inte... -0.79
Constrained portfolio optimisation with quadratic solving 0.00
Finding All Possible Solutions with Linear Programming in R (Rglpk?) 0.00
Multi-objective optimization with both equality and inequality cons... 0.00
Selection over different columns after a groupby -1.02
Multi-period portfolio optimization in python 0.00
L-BFGS-B does not satisfy given constraint 0.00
How to combine multiple objectives for optimization? +0.46
LP: postive reduced costs corresponding to positive variables? 0.00
Excel 2010 solver not working properly 0.00
Generate data using for loop in GAMS +0.47
PULP , CPLEX or GUROBI for Mixed Integer Programming (MIP) 0.00
How to write this constraint in LP solver (Logical and and Doesnot... 0.00
block of consecutive variables to have same value in mixed-integer... +2.03
Resources Management Linear Programming 0.00
How do I add a constraint to keep a factory switched on or off for... -1.91
Setting optimal value to lie in any of the given specified value 0.00
Redefining a variable 0.00
Adding count constraint in lpSolveAPI R -0.46
Portfolio optimization with quadprog for specific returns results i... 0.00
Gurobi or CPLEX? Quadratic indefinite objective - quadratic positiv... 0.00
Convert nonlinear objective function to linear objective function -0.03
Column generation is exact or heuristic algorithm? 0.00
Mixed linear integer optimization - Optimize Profit based on differ... 0.00
Solving quadratic optimization problems with complex constraints in R -0.47
Linear programming with minimum and maximum fixed cost +0.47
Removing duplicate rows in dataframes with multiple columns 0.00
How to ask for second best solution to a MIP using JuMP 0.00
Algorithm to divide region such that sum of distance is minimized +1.12
CPLEX refuses to find solution given equality constraint 0.00
ampl vs gams MINLP portfolio optimization syntax 0.00
Optimize a function in R with integer input vector which adds to a... -0.24
Is it possible to include previous solutions from a quadprog solver... 0.00
How to write a simple MPS file to submit to NEOS servers 0.00
Find subset with similar mean as full set 0.00
How to prove that that we can not have X(j)+ and X(j) - simultaneou... +0.47
How do I get integer optimal values as output using nloptr function... 0.00
Python / Pulp - first pick one item of each group 0.00
Mixed Integer Program with Varying Interest Rates 0.00
Linear programming with conditional constraints in R -0.74
Nonlinear optimization with constraint 0.00
Constraint in Linear Programming -0.03
R: (How) can the nlm function be used for optimization with multipl... 0.00
Assignment optimization / Set covering 0.00
Mixed Integer Programming in R - Indicator functions 0.00