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Two stage solution of VRPs using QUBO #203

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@srrisbud srrisbud commented Apr 6, 2023

Issue Number: #192

Objective of pull request: To enable solving VRPs using the QUBO solver in lava-optimization library

Pull request checklist

Your PR fulfills the following requirements:

  • Issue created that explains the change and why it's needed
  • Tests are part of the PR (for bug fixes / features)
  • PR conforms to Coding Conventions
  • Lint (pyb) passes locally
  • Build tests (pyb -E unit) or (python -m unittest) passes locally

Pull request type

Please check your PR type:

  • Feature

What is the new behavior?

  • VRPSolver can solve VRPs using 2-stage QUBO strategy (clustering + TSPs)

Does this introduce a breaking change?

  • No

srrisbud and others added 30 commits April 6, 2023 14:48
@srrisbud
Prelim commit
645c890 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
NEBM+SCIF merger: first pass
ae13aa5 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Prelim commit
cd6c3ba 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
NEBM+SCIF merger: second pass
bad70a1 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Post code-review: removed debug from NEBM, added docstrings, reinst…
ce8d87d 
…ated `best_solution` in read_gate

Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
First VRP app commit; incomplete, needs tests
69b53aa 
Signed-off-by: Risbud, Sumedh <[email protected]>
@ashishrao7 @srrisbud
Adding helper functions to generate Q matrices
110c66c 
for a) clustering b) tsp.
TODO: Add Typing code
@srrisbud
Second VRP app commit; functional with VRPy. Includes tests.
5458d71 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Second VRP app commit; solver complete, needs correct Q matrices
72b9c96 
Signed-off-by: Risbud, Sumedh <[email protected]>
@ashishrao7 @srrisbud
Changes to clustering matrix complete.
989a005 
Made changes to TSP API only.
Further work needed on TSP logic
@ashishrao7 @srrisbud
New tsp matrix generator with tests
c8a68b1
@ashishrao7 @srrisbud
Changed formulation of distance in TSP.
fd7ee83 
Encoding is now accurate
@ashishrao7 @srrisbud
Added proper clustering Q matrix generator
f74b1e0 
(with test)
@srrisbud
VRP Solver: Almost there
20a39ac 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
NEBM+SCIF merger: first pass
331171f 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Prelim commit
5112bd8 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
NEBM+SCIF merger: second pass
ca2da0f 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Post code-review: removed debug from NEBM, added docstrings, reinst…
6b7c840 
…ated `best_solution` in read_gate

Signed-off-by: Risbud, Sumedh <[email protected]>
@ashishrao7 @srrisbud
Adding helper functions to generate Q matrices
b4c6268 
for a) clustering b) tsp.
TODO: Add Typing code
@srrisbud
Resolved conflicts
e81862b
@srrisbud
Prelim commit
9d05227 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
NEBM+SCIF merger: first pass
51b107d 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Prelim commit
c5bcd3e 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
NEBM+SCIF merger: second pass
8169e43 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Post code-review: removed debug from NEBM, added docstrings, reinst…
b927fa3 
…ated `best_solution` in read_gate

Signed-off-by: Risbud, Sumedh <[email protected]>
@ashishrao7 @srrisbud
Changes to clustering matrix complete.
8208e97 
Made changes to TSP API only.
Further work needed on TSP logic
@ashishrao7 @srrisbud
New tsp matrix generator with tests
b72b7ce
@ashishrao7 @srrisbud
Changed formulation of distance in TSP.
9f358f3 
Encoding is now accurate
@srrisbud
VRPSolver first milestone: successfully solves VRPs
3cb087c 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
SCIF CPU backend model minor change to remove state_hist and pass t…
ec7f72e 
…ests

Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud srrisbud self-assigned this Apr 6, 2023
@srrisbud srrisbud added the 1-feature New feature or request label Apr 6, 2023
@srrisbud srrisbud requested a review from awintel April 6, 2023 23:40
@srrisbud srrisbud force-pushed the vrpsolver branch 3 times, most recently from e010fc1 to 3b402a5 Compare April 7, 2023 23:41
srrisbud and others added 20 commits May 4, 2023 16:04
@srrisbud
Sparsification attempt lava-nc#1: DistProxy with sign inversion and m…
5309540 
…ax cut-off

Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Merge branch 'main' into vrp_sparsification
a4ebc9c
@srrisbud
Intermediate check point commit for scenario sweep
164b0a9 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Profiling and sparsification related improvements to VRPSolver and VR…
78df169 
…PConfig

Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Script to sweep various scenarios for performance modelling of VRPSolver
c57a653 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Merge branch 'main' into vrpsolver
cee82c0
@srrisbud
Profiling and sparsification related improvements to VRPSolver and VR…
89758be 
…PConfig

Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Fixed the way to check if VRPy is installed
dea31fb 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Code clean-up refactoring in LCA module
513d6eb 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Merge branch 'lava-nc:main' into main
5ca5fc6
@srrisbud
Merge branch 'main' into vrp_sparsification
91e5997
@srrisbud
Merge branch 'lava-nc:main' into main
7cb6706
@srrisbud
Merge branch 'main' into vrp_sparsification
767cd3b
@srrisbud
Merge branch 'lava-nc:main' into main
8e1acf9
@srrisbud
Merge branch 'main' into vrp_sparsification
e7ac28b
@srrisbud
Corrected TSP Q matrix name
5ec5a46 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Added edge-pruning based sparsification
4e9f4aa 
Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Tests and scripts for quantification of the effect of dist-mat sparsi…
f92a034 
…ty on solution quality

Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Sparsification attempt lava-nc#1: DistProxy with sign inversion and m…
7e658e3 
…ax cut-off

Signed-off-by: Risbud, Sumedh <[email protected]>
@srrisbud
Merge branch 'vrp_sparsification' into vrpsolver
7c73e18
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