human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups papers that share a common citing paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "Multivariate Decision Trees"):
  Abstract: COINS Technical Report 92-82 December 1992 Abstract Multivariate decision trees overcome a representational limitation of univariate decision trees: univariate decision trees are restricted to splits of the instance space that are orthogonal to the feature's axis. This paper discusses the following issues for constructing multivariate decision trees: representing a multivariate test, including symbolic and numeric features, learning the coefficients of a multivariate test, selecting the features to include in a test, and pruning of multivariate decision trees. We present some new and review some well-known methods for forming multivariate decision trees. The methods are compared across a variety of learning tasks to assess each method's ability to find concise, accurate decision trees. The results demonstrate that some multivariate methods are more effective than others. In addition, the experiments confirm that allowing multivariate tests improves the accuracy of the resulting decision tree over univariate trees.

Includes members:
  Member "Multivariate versus Univariate Decision Trees":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Recursive Automatic Algorithm Selection for Inductive Learning")
  Member "Learning Polynomial Functions by Feature Construction":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "Gain Adaptation Beats Least Squares?")
  Member "Mingers, 1989 J. Mingers. An empirical comparison of pruning methods for decision tree induction. Machine":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "On Pruning and Averaging Decision Trees")

Question: Please tell me which class the citing paper (i.e., the source paper of the center hyperedge) belongs to. The 7 classes are: Neural_Networks, Reinforcement_Learning, Probabilistic_Methods, Theory, Genetic_Algorithms, Case_Based, Rule_Learning. Directly output the class name.

gpt: Theory