jshbrmn/irt-service
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add some labels to constraints and rename variables to be a bit more descriptive

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This commit is contained in:
Adrian Manteza 2022-03-07 16:17:45 +00:00
parent cec7429913
commit 0b41c341b7
1 changed files with 15 additions and 15 deletions
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30
app/services/loft_service.py
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@ -63,8 +63,7 @@ class LoftService(Base):
def generate_solution(self) -> Solution:
logging.info('Generating Solution...')
# unsolved solution
solution = Solution(response_id=random.randint(100, 5000), forms=[])
solution = Solution(response_id=random.randint(100, 5000), forms=[]) # unsolved solution
# setup common Solver variables
items = LpVariable.dicts("Item", [item.id for item in self.solver_run.items], cat='Binary')
@ -85,8 +84,8 @@ class LoftService(Base):
problem += lpSum([items[item.id] for item in self.solver_run.items])
# constraints
# problem += lpSum([items[item.id]
# for item in self.solver_run.items]) == self.solver_run.total_form_items, 'Total form items'
problem += lpSum([items[item.id]
for item in self.solver_run.items]) == self.solver_run.total_form_items, f'Total form items for form {form_number}'
problem += lpSum(
[
bundle.count * bundles[bundle.id]
@ -95,11 +94,10 @@ class LoftService(Base):
1 * items[item.id]
for item in self.solver_run.unbundled_items()
]
) == self.solver_run.total_form_items, 'Total bundle form items for form'
) == self.solver_run.total_form_items, f'Total bundle form items for form {form_number}'
# dynamic constraints
problem = solver_helper.build_constraints(self.solver_run, problem,
items, bundles)
# Dynamic constraints.. currently we only support Metadata and Bundles(Cases/Passages)
problem = solver_helper.build_constraints(self.solver_run, problem, items, bundles)
# multi-objective constraints
logging.info('Creating TIF and TCC constraints')
@ -146,19 +144,21 @@ class LoftService(Base):
for item in self.solver_run.items])
constraint = LpConstraint(
e=e,
sense=0,
name=f'tcc theta ({target.theta}) @{target.value}',
sense=-1,
name=f'tcc theta ({target.theta}) @{target.value} for form {form_number}',
rhs=target.value)
elasticized_constraint = solver_helper.elasticize_constraint(constraint)
problem.extend(elasticized_constraint)
# problem.extend(elasticized_constraint)
# solve problem
logging.info('Solving...')
# print(problem)
logging.info('Solving for Form %s...', form_number)
print(problem)
problem.solve()
# problem.sequentialSolve(problem_objective_functions)
logging.info('Solved...generating form and adding to solution')
logging.info(f'Solved for Form {form_number}...generating form and adding to solution')
# add return items and create as a form
form_items = service_helper.solution_items(problem.variables(), self.solver_run)
@ -170,7 +170,7 @@ class LoftService(Base):
logging.info('Form generated and added to solution...')
# successfull form, increment
f += 1
form_count += 1
logging.info('Solution Generated.')
# print(problem)