code: def dict_of_sparse_matrix():
      return {
          "sparse_matrix_csc": csc_matrix(
              np.arange(0, 12, 0.5).reshape(3, 8)
          ),
          "sparse_matrix_csr": csr_matrix(
              np.arange(0, 12, 0.5).reshape(3, 8)
          ),
      }
  
imports: import json
  import math
  from unittest import mock
  import numpy
  import pandas
  import pytest
  import sklearn.neighbors
  from scipy.sparse import csc_matrix, csr_matrix
  from sklearn import datasets
  from sklearn.base import BaseEstimator, ClassifierMixin
  import mlflow
  from mlflow.models import Model
  from mlflow.models.signature import ModelSignature, infer_signature
  from mlflow.models.utils import _Example, _read_sparse_matrix_from_json, _read_tensor_input_from_json
  from mlflow.types import DataType
  from mlflow.types.schema import ColSpec, Schema, TensorSpec
  from mlflow.types.utils import TensorsNotSupportedException
  from mlflow.utils.file_utils import TempDir
  from mlflow.utils.proto_json_utils import dataframe_from_raw_json
  from tests.helper_functions import AnyStringWith
label_desc: Use image node_id 6 for calling a global function with example usage: dict_of_sparse_matrix() and returns: dict