ChimeraModel() fails due to missing positional argument 'sparse'

[j-danek]

Describe the bug
Hi all. I was trying to run the code from tutorial on ChimeraModel but the call of the functions fails. I believe there is positional argument sparse missing in the internal call of function make_BinaryQuadraticModel().

To Reproduce
Executing code with
Q={(0, 4): -1, (4, 12): -1}
chimera_model = ChimeraModel(Q, unit_num_L=2) # make
chimera_self.validate_chimera()

Following Error is obtained:

---

TypeError Traceback (most recent call last)
Cell In[32], line 2
1 Q={(0, 4): -1, (4, 12): -1}
----> 2 chimera_model = ChimeraModel(Q, unit_num_L=2) # make
3 chimera_self.validate_chimera()

File ~/miniforge3/envs/jij/lib/python3.10/site-packages/openjij/model/chimera_model.py:358, in ChimeraModel(linear, quadratic, offset, vartype, unit_num_L, model, gpu)
323 def ChimeraModel(
324 linear: dict = None,
325 quadratic: dict = None,
(...)
330 gpu: bool = False,
331 ):
332 """Generate ChimeraModel object
333
334 This model deal with chimera graph.
(...)
355 >>> chimera_self.validate_chimera()
356 """
--> 358 Model = make_ChimeraModel(linear, quadratic)
360 return Model(linear, quadratic, offset, vartype, unit_num_L, model, gpu)

File ~/miniforge3/envs/jij/lib/python3.10/site-packages/openjij/model/chimera_model.py:31, in make_ChimeraModel(linear, quadratic)
24 def make_ChimeraModel(linear, quadratic):
25 """ChimeraModel factory.
26
27 Returns:
28 generated ChimeraModel class
29 """
---> 31 class ChimeraModel(make_BinaryQuadraticModel(linear, quadratic)):
32 """Binary quadnratic model dealing with chimera graph This model deal
33
34 with chimera graph. ChimeraModel provide methods to verify whether a
(...)
42 >>> chimera_self.validate_chimera()
43 """
45 def init(
46 self,
47 linear=None,
(...)
53 gpu=False,
54 ):

TypeError: make_BinaryQuadraticModel() missing 1 required positional argument: 'sparse'

Expected behavior
Function should return chimeramodel object instead of failing.

Environment (please complete the following information):

• OS: Ubuntu 22.04
• Python 3.10.12
• Version jij-cimod 1.4.55; openjij 0.7.3