Improve network simplex algorithm

- Remove "Limited Search" and "Combined" pivot rules.
- Add a new pivot rule "Altering Candidate List".
- Make the edge selection faster in every pivot rule.
- Set the default rule to "Block Search".
- Doc improvements.

The algorithm became about 15-35 percent faster on various input files.
"Block Search" pivot rule proved to be by far the fastest on all inputs.

G++-4.3 compatibility changes

Backport bug fix for Id handling from hg changeset [e67acd83a9ca]

Back port bug fix from hg changeset [0915721396dc]

Fix bug caused by m4 consuming pairs of square brackets (#108).

Update the version number

Back porting hg commit 81563e019fa4

Bug fix initialization
The std::numeric_limits<double>::min() means the smallest positive number,
and not the smallest number in the whole range of double.

Fixing bug in named parameters (Back port bug fix of ticket #95)

Bug fix full graph problam

Fixing lp constraints (solving ticket #92)

Avoid warning in random.h (backport of chgset 4790635473ef from lemon-1.0)

Remove SspMinCostFlow, since it is fully replaced by other classes.

Revert mistaken changes in NEWS file.

Bug fixes in LP solvers
- the copyLp is clarified
- newLp and copyLp gives back pointers
- cplex gives back empty string for variables without name
- cplex row and column retrieval
- added macro for soplex

Fix Makefile.am

Small fixes in NEWS file

Rel.07 NEWS - 3. round

Rel.07 NEWS - 2. round

NEWS file updated for Release 0.7

Serious bugfix in Random::gamma()
Backport from hg b6bede534255

Minor bug fix

Correcting broken repo

Back porting commit 81563e019fa4

Bug fix for not connected graphs

Executable property removed

Fix static member initializations (ticket #30).

Revert to long long int since currently I don't know a better solution.

In C++98 array size shall be an integral constant expression. Fixes
ticket 12.

There is no 'long long int' type in C++98 (only in C99).

Bug fix in CapacityScaling.

Small improvements in min cost flow files.

External flow and potential maps can be used in MinCostMaxFlow.

Reimplemented Suurballe class.

- The new version is the specialized version of CapacityScaling.
- It is about 10-20 times faster than the former Suurballe algorithm
and about 20-50 percent faster than CapacityScaling.
- Doc improvements.
- The test file is also replaced.

Backport of bug fix hg 2de55e4f57a7

Test file for the min cost flow algorithms.

Small fixes and doc improvements in MinMeanCycle.

Avoid map copy in MinCostMaxFlow.

Query improvements in the min cost flow algorithms.

- External flow and potential maps can be used.
- New query functions: flow() and potential().
- CycleCanceling also provides dual solution (node potentials).
- Doc improvements.

Bug fixes

Bug fixes in min cost flow files.
Use enum type instead of static constants in NetworkSimplex to avoid
linker errors.

Put the definitions of global functions into a .cc file.

Add a cost scaling min cost flow algorithm.

Add a cost scaling algorithm, which is performing generalized
push-relabel operations. It is almost as efficient as the capacity
scaling algorithm, but slower than network simplex.

Improvements in MinCostFlow and MinCostMaxFlow.

Main changes:
- MinCostMaxFlow also provides dual solution.
- Change the name of private members to start with "_".
- Change the name of function parameters not to start with "_".
- Remove unnecessary documentation for private members.
- Doc improvements.

Major improvements in NetworkSimplex.

Main changes:
- Use -potenital[] instead of potential[] to conform to the usual
terminology.
- Use function parameter instead of #define commands to select pivot rule.
- Use much faster implementation for the candidate list pivot rule.
It is about 5-20 times faster now.
- Add a new pivot rule called "Limited Search" that is a modified
version of "Block Search". It is about 25 percent faster on rather
sparse graphs.
- By default "Limited Search" is used for sparse graphs and
"Block Search" is used otherwise. This combined method is the most
efficient on every input class.
- Change the name of private members to start with "_".
- Change the name of function parameters not to start with "_".
- Remove unnecessary documentation for private members.
- Many doc improvements.

Improvements in CapacityScaling.

Main changes:
- Use -potenital[] instead of potential[] to conform to the usual
terminology.
- Change the name of private members to start with "_".
- Change the name of function parameters not to start with "_".
- Remove unnecessary documentation for private members.
- Doc improvements.

Improvements in CycleCanceling.

Main changes:
- Use function parameter instead of #define commands to select negative
cycle detection method.
- Change the name of private members to start with "_".
- Change the name of function parameters not to start with "_".
- Remove unnecessary documentation for private members.
- Doc improvements.

Fix VPATH builds.

Hopefully fix all compilation errors.

Fix a silly typo

#include<cmath> -> #include<lemon/math.h>

Math constants + configure bugfix backported
from hg a315a588a20d and 761622e5ed4c

Update the server and the repository names to lemon.

Doc improvments backported from hg 9df0fe5e5109

Bug fix in heap_test.cc.

Several doc improvements and fixes in maps.h and concepts/maps.h.

Small fixes in README.

Improvements and fixes in dim2.h.

- Several doc improvements.
- Fix BoundingBox::operator& implementation.

Translate Hungarian varible names and improve messages in dim_test.cc.

Fix the rename script.

grid_ugraph.h: fixed #18 (global functions inlined)

Improved rename script to handle includes correctly.

Reveal an existing functionality in the documentation

Cleanup in the minimum cost flow files.
The changes only affects the documentation and the look of the source codes.

Reimplemented MinMeanCycle to be much more efficient.
The new version implements Howard's algorithm instead of Karp's algorithm and
it is at least 10-20 times faster on all the 40-50 random graphs we have tested.

Minor doc fix

Happy New Year to LEMON (+ better update-copyright-header script)

Improved rename script to avoid "undirected digraph".

Include functional because of std::less.

Changing degree of tournament tree
Bug fix in union find
Small efficiency improvment in bipartite matchings

Test program for max weighted matchings

Edmond's Blossom shrinking algroithm:
MaxWeightedMatching
MaxWeightedPerfectMatching

Renaming state_enum to State
Removing "Type" suffix from typedefs
Moving implementation into the class definition

Bug fix in erase

Casting index to int

Bug fix (Circulation interface changed).

Change the local variables lower case

Bug fix

Bug fix

Avoiding warnings

DynEdgeLookUp implementation based on splay trees
In general case it is slower than the static version, but it should not
refreshed on the change of the graph

Bug fix in doc

Using operation traits in dijkstra

Modified rename script (BpGraph instead of Bigraph).

Redesigned CapacityScaling algorithm with almost the same interface.
The new version does not use the ResidualGraphAdaptor for performance reasons.
Scaling can be enabled and disabled with a parameter of the run() function.

Improved docs.

Bug fixes.

Bug fixes in the rename script.

rename graphs script

Reimplementation of Hao-Orlin algorithm
Little modifictaion in NagamochiIbaraki
More docs for minimum cut algorithms

Minor changes

Gomory-Hu tree algorithm

bug fix
class without constructor error

Redesign Circulation interface according to new flow interface
New greedy approach initialization

Using linked elevator
It is conform to the Graph concept in that sense
the graph maps should not be ReferenceMap

Bug fix resetting activeness of node at initialization

Fix warning when compiling with -Wall.

Performance bug in Preflow
The initial relabeling moved each node to the lowest level
Doc bug fix

Bugfix: using read-write map instead reference map

Better solution

Changed queue implementation

Bugfix in min cut computation

Small changes in the documentation.

Nauty graph6 reader

Changing max flow interface

Redesign the maximum flow algorithms

Redesigned interface
Preflow changed to use elevator
Edmonds-Karp does not use the ResGraphAdaptor
Goldberg-Tarjan algorithm (Preflow with Dynamic Trees)
Dinitz-Sleator-Tarjan (Blocking flow with Dynamic Tree)

Query the result value of an expression

Elevator: slight changes in elevator interface
LinkedElevator: based on linked lists

IntegerMap

removing semicolon ftom the end of GRAPH_TYPEDEFS

Small changes in the min. cost flow classes.

Planar graph coloring

Small bug fix.

Change to new union-find interface

Redesign interface of MaxMatching and UnionFindEnum
New class ExtendFindEnum

Faster MaxMatching

Bug fix

Fix a typo that caused the failure of 'make dist'

BpUGraphReader and Writer

Forgotten images

planar doxygen group

Planar Grid Embedding

Bug fix in undirected graphs (adding loops)
Bug fix in undirected edgesets (alteration notifying)

Redesigned undirected edgesets (like the smart or ugraph)

Build fix.

setAll for iterable bool maps

Added the function isFinite(), and replaced the calls to finite() with it.
This was necessary because finite() is not a standard function. Neither can
we use its standard counterpart isfinite(), because it was introduced only
in C99, and therefore it is not supplied by all C++ implementations.

Makefile fix.

Bad documentation

Adding doc

Documentation for lemon tools

Minor bug fixes in documentation

Bug fix and redesign StdMap
Improving map adaptors documentations

Bug fix in MaxMatching

Removing other occurences of cnt

Doc bug fix

New developers page
The participation period should be included

Bug fix in doc related to Graph concpets

Removing some todos!

make it compatible with current version of glpk

- Gamma distributon random variable.
- Test file for random.h

Missing header file added.

Avoiding warnings

Planarity checking and embedding

Once again bug fix in significant bit calculation

The same for unsigned radix sort

Bug fix in most significant digit calculation

Bug fixes in the documentation (mainly bad references).

Generate tools documentation

Small bug fixes and changes in the documentation.

Small improvement in documentation.

Missing header.

Small changes in min. cost flow algorithms.

Small bug fixes.

Invalid assignments ambiguity handling

More simple interface for PathDumper

PathNodeIt

PathWriter/Reader structures
Distinict MapSet readers and writers

Redesign of augmenting path based matching
Small bug fix in the push-relabel based

Consider the CPXMIP_OPTIMAL_TOL status as OPTIMAL too.

uedgeset is an alias for edgeset

Query functions: aMatching and bMatching
Modified algorithm function interfaces
ANodeMap<UEdge> matching map
BNodeMap<bool> barrier map

Consistency between augmenting path and push-relabel algorithm

Common interface for bipartite matchings
Some useful query function for push-relabel based matching

The naming should be rethink for these classes
for example: pr-ap prefix for push-relabel and augmenting path
algorithms

Reporting invalid ID

Correction in the line numbering method

Sample input for sat-2 and sat demos

The mip column addition hack is necessary only for 4.16

Improvments in min cost flow algorithms
- improved cycle cancelling

Space reservation for SmartGraph

Doc improvments

Using set() instead of assignment

Spellcheck

Correction for multiple point on starting sweep line

Update the demo file of Circulation

Two new constructors added to dim2::BoundingBox

Negate the meaning of the delta parameter

Minor improvement in Tutorial

Bugfix and improvement in -tsp2 algorithm

Delaunay triangulation
Faster geometric minimum spanning tree

A minimum spanning tree based TSP algorithm is added (-tsp2)

- Fix a serious bug in UEulerIt
- Add a conversion to UEdge
- Make some member funtions to be 'const'

Patch in network simplex

Patch from Peter Kovacs

Patch for retrieving reached/processed node in dijkstra, bfs and dfs

Patch from Peter Kovacs

Bug fix

Conformity to new GLPK interface
Hacking Mip without integer variables

Various min cost flow solvers

Patch from Peter Kovacs

Modified start() function in Dfs and Dijkstra classes to give back reached
edge/node.

Patch from Peter Kovacs

Bug fix in Bfs class.

Patch from Peter Kovacs

Small improvements in MinMeanCycle class.

Patch from Peter Kovacs

Integer parameters also convert to double

Fix the bug

Test the repository checking service

Fix the test bug

Sorry...

fix to compile with gcc 4.1.2

Test broken repository warning

Renaming topology doxygen group

Doc change

Clear for unionfinds

Allowing 'string' type quoting

Helper classs for checking existence of a nested class

Redesigned Kruskal algorithm

The interface of function type implementation is not changed
Additional class type implementation

Corrections on StoreBoolMap
- *insert_iterator has void value_type
- use const setting

Doc fix

Small changes

Demo program for SAT problems

Added SimplePath::front().

Slight modifications.

Parameter reordering

Patch from Kovacs Peter

Small improvments

I only corrected bugs to make things compile: some featured not implemented here yet.

Bug fix
Wrong renaming

Right dimacs format for min cost flows
Bug fixes in tolerance and min_mean_cycle

Append the svn revision number to the version string automatically.

Bug fix

dim_to_lgf
- use the argparser class
arg_parser improvments
- usage of assert in cc
- const char** argv
error
- handling the string parameter

Minimum mean cycle algorithm contributed by Peter Kovacs.

Doc improvements contributed by Peter Kovacs.

Using LEMON_ASSERT instead of LogicError()

Better doc.

Missing template keyword bug

dim_to_lgf has been moved to tools/ (from demo/)

The lemon repository has been renamed

An improved version of ArgParser: You don't need to give an explicit storage
for each option.
TODO: Documentation must be updated

Data hiding
Const members

Steiner 2-approximation demo

More query functions

Little interface improvment

Some design correction

naming convention:
header sentry

Correction of urls and email addresses

Bug fix missing include

Bug fix
from Kovacs Peter

Bug whit Parent typedef in SplitGraphAdaptor::CombinedEdgeMap
Fixing graph to eps parameters for demo

Happy New Year to all source files!

- '-Wshadow' seemed to strict therefore removed
- a tools directory added for useful executables codes
- tools/lgf-gen.cc (a random graph generator) added

arg_parser.h: A command line argument parser.
dist_log.h: A tool for measuring one and two dimensional distributions.

More doc.

Fix icc compilation failures

Hard Warning checking
- based on the remark of the ZIB user
- we do not use -Winline

Bug fix
Setting _pred in init()

getNotifier to notifier renaming

steiner.h into the makefile

2-approximation of Steiner-tree problem

Bug fix

ball2() -> disc() renaming