This paper presents layered learning, a hierarchical machine learning paradigm. Layered learning applies to tasks for which learning a direct mapping from inputs to outputs is intractable with existing learning algorithms. Given a hierarchical task decomposition into subtasks, layered learning seamlessly integrates separate learning at each subtask layer. The learning of each subtask directly f...

A family of one-vertex triangulations of the genus-g-handlebody, called layered-triangulations, is defined. These triangulations induce a one-vertex triangulation on the boundary of the handlebody, a genus g surface. Conversely, any one-vertex triangulation of a genus g surface can be placed on the boundary of the genus-g-handlebody in infinitely many distinct ways; it is shown that any of thes...

The information conveyed by any utterance is a motley ensemble. Utterances carry content about the world as it is according to the speaker, but also about speakers’ attitudes, the way they speak, what has been said before, and so on. There are many kinds of information that are conveyed by way of language, and differences in kind correlate with differences in status. Presupposed information exh...

BOOTSTRAP VOTING EXPERTS (BVE) is an extension to the VOTING EXPERTS algorithm for unsupervised chunking of sequences. BVE generates a series of segmentations, each of which incorporates knowledge gained from the previous segmentation. We show that this method of bootstrapping improves the performance of VOTING EXPERTS in a variety of unsupervised word segmentation scenarios, and generally impr...

We describe a generic software environment intended to assist the construction of applications by the composition of reusable components. Two classes of components (and their related systems) are clearly distinguished: operational components (or components in the ’classical’, technological sense) and descriptive components, encapsulating meta-data about, amongst others, their operational counte...

Modes were introduced in logic programming to diierentiate the input arguments of a predicate from its output arguments. This information can be used for verifying the most diverse properties of logic programs, notably absence of run-time errors and absence of deadlocks in presence of delay declarations. We introduce here layered modes, an extension of existing mode systems which allow us to en...

ALOHA systems are some of the most attractive options for wireless applications which include packet transmission. However, despite their exibility and simplicity, they present a very low channel throughput. The objective of this paper is to analyze the performance of Slotted ALOHA based vertical layered space-time, known as V-BLAST, systems over wireless links. The multiple transmit antennas i...

Martian craters with fluidized ejecta – including single-layered, double-layered and multiple-layered craters – have been studied extensively, with their formation generally suggested to require some presence of volatiles in the subsurface. However, experimental reproduction of these morphologies, impact modelling, and the occurrence of layered ejecta in putative volatile poor regions suggests ...

A typical NLP system for medical fact coding uses multiple layers of supervision involving factattributes, relations and coding. Training such a system involves expensive and laborious annotation process involving all layers of the pipeline. In this work, we investigate the feasibility of a shallow medical coding model that trains only on fact annotations, while disregarding fact-attributes and...