class_docstr: Higher-Order Factorization Machine base class.
class_docstr_tok: ["Higher-Order","Factorization","Machine","base","class","."]
code: def _interaction_names(self, x):
      return [
          " - ".join(map(str, combination))
          for d in range(2, self.degree + 1)
          for combination in itertools.combinations(x.keys(), d)
      ]
  
imports: from __future__ import annotations
  import collections
  import functools
  import itertools
  import numpy
  from river import base, optim, utils
  from .base import BaseFM
label_desc: Use image node_id 3 for calling the HOFM obj's underlying member method code with example usage: obj._interaction_names(x) and returns: unknown