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Automatically exported from code.google.com/p/lpsolver
What steps will reproduce the problem?
1. Input a 21 variable problem.
2. Solve.
What is the expected output? What do you see instead?
Would expect to see a moderately fast solution. Instead Java encounters
memory overload errors on ArrayList capacities when calculating the power
set of variables.
Anticipated Solution Method: Rather than calculate the entire power set,
the optimal method will be to individually calculate each element of the
power set, run a test to see if it is the correct size or represents a
basic feasible solution. Eliminating the power set ArrayList will resolve
most of the current performance issues.
Original issue reported on code.google.com by [email protected]
on 19 Apr 2009 at 4:46
What steps will reproduce the problem?
1. Select a cell in Objective Function Table.
2. Select a cell in the Constraint Table.
What is the expected output? What do you see instead?
The cell in the Objective Function Table should deselect when a cell in the
Constraint Table is
selected. Currently cross-table selections do not cross-deselect.
Please use labels and text to provide additional information.
JTable Cell Editors/Frame Class
Original issue reported on code.google.com by [email protected]
on 7 Apr 2009 at 3:34
What steps will reproduce the problem?
1. Obj Func: 3,4,5,2,7,8 Minimize
2. Constraints:
1,1,1,0,0,0,=,5
0,0,0,0,1,1,=,5
1,0,0,-1,0,0,=,0
0,1,0,1,-1,0,=,0
0,0,1,0,0,-1,=,0
3. Solve
What is the expected output? What do you see instead?
Expect Solution: 0,5,0,0,5,0 for OFV = 55. Instead get 0,0,0,0,5,0 for OFV =
55.
LaTeX Output has variant solution; suspect failure in pivot variable choosing
method.
Please use labels and text to provide additional information.
Original issue reported on code.google.com by [email protected]
on 24 Apr 2009 at 2:22
What steps will reproduce the problem?
1. Enter a value in a double-based table cell.
2. Deselect the cell.
3. Reselect the cell with a single click to highlight, and enter new values.
What is the expected output? What do you see instead?
The newly entered values should replace the pre-existent values.
Currently, the newly entered values append on the pre-existent values.
Please use labels and text to provide additional information.
JTable Cell Editors/Frame Class
Original issue reported on code.google.com by [email protected]
on 7 Apr 2009 at 3:32
Planned implementation: Should have user-selected option to generate a
auxiliary text file
displaying simplex tableaus whenever an lp is solved.
Original issue reported on code.google.com by [email protected]
on 7 Apr 2009 at 3:36
Want to include an optional column in the table to label constraints and
ability to rename decision variables in the column headers.
Original issue reported on code.google.com by [email protected]
on 16 Apr 2009 at 7:57
Plan to implement an Option Menu Item that will display additional information
about each
constraint.
To include:
Binding/Not-binding
If not-binding, Slack/Surplus
Shadow Price
Range of Feasibility
Original issue reported on code.google.com by [email protected]
on 7 Apr 2009 at 3:23
Planned Implementation: Create interface and solver structure to handle
different types of decision
variables (unrestricted, binary).
Original issue reported on code.google.com by [email protected]
on 7 Apr 2009 at 3:27
Want to implement submenus to choose which variable/constraint to delete
rather than JOptionPanes.
Original issue reported on code.google.com by [email protected]
on 14 Apr 2009 at 2:22
What steps will reproduce the problem?
1. Input an infeasible LPP, solve.
2. Input an unbounded LPP, solve.
3. Input a pivot out-timing LPP, solve.
What is the expected output? What do you see instead?
Expect separate error messages. Currently produces the same error message.
Original issue reported on code.google.com by [email protected]
on 7 Apr 2009 at 3:10
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