研究概率值与分布间的类比关系,探索其在分类中的应用潜力。
From numerical proportions to analogical proportions between probabilities

- 基于算术与几何比例组合定义概率类比关系
- 实验验证四组概率分布满足类比时整体仍保持类比结构
- 适合对概率推理和类比学习感兴趣的读者
类比比例将四个元素 a、b、c、d 通过关系 'a 对 b 好比 c 对 d' 联系起来,这些元素可为布尔值、类别值、数值或向量等。本文探讨概率值之间或概率分布之间的类比比例关系,尤其关注是否在分布归一化条件下仍能保持类比结构。研究基于算术比例及算术与几何比例的组合形式,并讨论其他可能性。已有研究表明,当四组向量在各分量上构成类比比例时,其类别也倾向于形成类比比例,从而支持基于类比的分类方法。本文将此思想延伸至概率分布:每个样本关联一个描述离散属性取值频率的分布,实验检验四组分布若整体满足类比比例,则其对应的分布是否也形成类比比例。结果表明该性质在特定条件下成立,为概率类比推理提供了理论依据。
原文摘要 · Abstract (English)
Analogical proportions link four items a, b, c, d by a relation stating that ``a is to b as c is to d", a, b, c, d being the formal representation of real world entities, ranging from simple numerical values to more complex structures such as profiles. Accordingly, $a, b, c, d$ could be atomic values like Boolean, nominal or numerical values, more generally vectors of such values, or even families of items represented by logical formulas. In this paper, we consider another representation setting, which is the probabilistic one. Precisely, the article proposes a study of {analogical} proportions between probabilities, whether they are simply between probability values, or between distributions (which requires the preservation of their normalization). More particularly, we study the properties of definitions based on arithmetic proportion, or on a combination of the former with geometric proportion, while other options are also discussed. Previous works have shown that when four profiles a, b, c, d, represented as vectors, form analogical proportions componentwise, it is likely that their classes form an analogical proportion also. This is the basis of an analogical proportion-based classification method that can produce accurate predictions. Similarly, in this paper, each profile is associated with a distribution describing the frequencies of the possible values of a discrete attribute of interest. We then discuss and experimentally investigate if the distributions associated to four profiles forming an analogical proportion themselves also form an analogical proportion.
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