Hossein Karimi

12 Questions 20 Answers 0 Followers

Questions related from Hossein Karimi

What is the mean and variance of the statistic of Kruskal-Wallis test?

11 November 2015 6,090 4 View

What is your criteria to select a journal for publication?

Selecting the suitable journal can be challenging, particularly, for the first-time authors or interdisciplinary researches. As you know, the review process is often time consuming, therefore, the...

03 March 2015 4,322 8 View

What are the recent and well-behaved methods in solving a stochastic mathematical model?

There are methods such as sample average method and progressive hedging algorithm for solving a mixed integer programming stochastic optimization.

07 July 2014 4,209 10 View

How can I manage the discussion section in a paper which introduced a mathematical model with its solution method?

Which method do you suggest?

06 June 2014 3,551 1 View

What is the origin of the central moment for a distribution function?

As I know, the central moment or other moments in mathematics are used for some features of a distribution functions such as the mean, variance and skewness. However, what is the origin of the...

01 January 2014 9,852 8 View

Is there any relationship for travel time between ground and air transportation systems?

I think there is an approximation function to obtain the travel time with airplane by the travel time on the ground. How can I achieve this function?

01 January 2014 9,326 3 View

What is your idea about this claim in the location routing problem?

Some researchers declare that the location is a strategic, while routing is a tactical problem in the location-routing problem. Also, they express that the routes can be re-calculated more and...

12 December 2013 7,115 6 View

Hybrid of Lagrangian relaxation and Benders decomposition

Does anybody see an example for hybrid of Lagrangian relaxation and Benders decomposition in MIP?

09 September 2013 2,823 4 View

Is a strong linear relaxation sufficient for good performance of a branch and bound?

Strong Linear Relaxation

07 July 2013 8,895 6 View

How can I define fixed cost for the real location problem in urban transportation area?

I want to calculate the fixed cost in the urban transportation problem. I think based on the flow and distance, I can define a fixed cost near real-world one. Any one can help me with this problem?

04 April 2013 1,480 2 View

How can I add a technological constraint on the classical project scheduling problem?

I want to bind a classical project scheduling problem with Cmax objective function. For example, the first and the second activity can start at the beginning of the project. I want to limit the...

02 February 2013 8,207 3 View

When you introduce a new mathematical model and implement a meta-heuristic solution method for it, what is the best way to verify your algorithm?

For example, when you develop a genetic algorithm for a new mathematical model.

02 February 2013 2,307 21 View