Decision trees in which numeric attributes are split several ways are more comprehensible than the usual binary trees because attributes rarely appear more than once in any path from root to leaf. There are efficient algorithms for finding the optimal multiway split for a numeric attribute, given the number of intervals in which it is to be divided. The problem we tackle is how to choose this n...

To delineate homogenous subgroups among hospitalized opiate addicts, a multivariate correlational clustering technique was applied to the Minnesota Multiphasic Personality Inventory profiles of 1,500 addicts, subdivided into 10 subsamples (5 for each sex) representing four different categories of admission into treatment (civilly committed, volunteers, probationers, prisoners). Within each subs...

Collective oscillations of supernova neutrinos swap the spectra f(nu(e))(E) and f(nu[over ](e))(E) with those of another flavor in certain energy intervals bounded by sharp spectral splits. This phenomenon is far more general than previously appreciated: typically one finds one or more swaps and accompanying splits in the nu and nu[over ] channels for both inverted and normal neutrino mass hier...

Standard Tokyo Japanese has a rich pitch-accent system where multiple pitch patterns are differentiated from each other in terms of the presence/absence of an abrupt pitch fall as well as its position. However, this is only one type of system among the variety of pitch-accent systems found in the language. This paper looks at these pitch-accent systems from typological viewpoints, through a com...

The plethora of recent work under the theoretical banner of ‘Agreement By Correspondence’ (ABC) has produced a variety of different—and sometimes contradictory—formulations of the constraints central to this framework. In OT, the effects of such definitional choices come out in the factorial typologies they predict. Yet knowing what languages a theoretical system derives is insufficient without...

Two univariate split methods and one linear combination split method are proposed for the construction of classification trees with multiway splits. Examples are given where the trees are more compact and hence easier to interpret than binary trees. A major strength of the univariate split methods is that they have negligible bias in variable selection, both when the variables differ in the num...

We show that if A and  are automorphic via 8 then the structures SR(A) and SR( Â) are 13-isomorphic via an isomorphism 9 induced by 8. Then we use this result to classify completely the orbits of hhsimple sets.

We consider the multi class classification problem under the setting where the number of labels is very large and hence it is very desirable to efficiently achieve train and test running times which are logarithmic in the label complexity. Additionally the labels are feature dependent in our setting. We propose a reduction of this problem to a set of binary regression problems organized in a tr...

The study explores the difficulties of native English speakers in acquiring the Chinese word order, aiming to relate it to the markedness theories. According to the Differential Markedness Hypothesis (DMH), the degrees of learner difficulty in second language acquisition can be predicted according to the degrees of typological markedness between learners’ first language (L1) and their second la...

Earlier versions of generative grammar, dating back to Bresnan (1970), proposed that wh-movement moves interrogative phrases into the position of complementizers. While the dominant view in generative grammar since Chomsky (1986) has been that wh-movement is movement into Spec of CP, the purpose of this paper is to examine typological evidence bearing on the earlier view, of movement into the p...