Segmentation ART: A Neural Network for Word Recognition from Continuous Speech

The Segmentation ATIT (Adaptive Resonance Theory) network for word recognition from a continuous speech stream is introduced. An input sequeuce represents phonemes detected at a preproccesing stage. Segmentation ATIT is trained rapidly, and uses a fast-learning fuzzy ART modules, top-down expectation, and a spatial representation of temporal order. The network performs on-line identification of word boundaries, correcting an initial hypothesis if subsequent phonemes are incompatible with a previous partition. Simulations show that the system's segmentation perfonnance is comparable to that of TRACE, and the ability to segment a number of difficult phrases is also demonstrated.National Science Foundation (NSF-IRI-94-01659); Office of Naval Research (N00014-95-1-0409, N00014-95-1-0G57

Moving in time: simulating how neural circuits enable rhythmic enactment of planned sequences

Many complex actions are mentally pre-composed as plans that specify orderings of simpler actions. To be executed accurately, planned orderings must become active in working memory, and then enacted one-by-one until the sequence is complete. Examples include writing, typing, and speaking. In cases where the planned complex action is musical in nature (e.g. a choreographed dance or a piano melody), it appears to be possible to deploy two learned sequences at the same time, one composed from actions and a second composed from the time intervals between actions. Despite this added complexity, humans readily learn and perform rhythm-based action sequences. Notably, people can learn action sequences and rhythmic sequences separately, and then combine them with little trouble (Ullén & Bengtsson 2003). Related functional MRI data suggest that there are distinct neural regions responsible for the two different sequence types (Bengtsson et al. 2004). Although research on musical rhythm is extensive, few computational models exist to extend and inform our understanding of its neural bases. To that end, this article introduces the TAMSIN (Timing And Motor System Integration Network) model, a systems-level neural network model capable of performing arbitrary item sequences in accord with any rhythmic pattern that can be represented as a sequence of integer multiples of a base interval. In TAMSIN, two Competitive Queuing (CQ) modules operate in parallel. One represents and controls item order (the ORD module) and the second represents and controls the sequence of inter-onset-intervals (IOIs) that define a rhythmic pattern (RHY module). Further circuitry helps these modules coordinate their signal processing to enable performative output consistent with a desired beat and tempo.Accepted manuscrip

A Neural Network Model of Spatio-Temporal Pattern Recognition, Recall and Timing

This paper describes the design of a self~organizing, hierarchical neural network model of unsupervised serial learning. The model learns to recognize, store, and recall sequences of unitized patterns, using either short-term memory (STM) or both STM and long-term memory (LTM) mechanisms. Timing information is learned and recall {both from STM and from LTM) is performed with a learned rhythmical structure. The network, bearing similarities with ART (Carpenter & Grossberg 1987a), learns to map temporal sequences to unitized patterns, which makes it suitable for hierarchical operation. It is therefore capable of self-organizing codes for sequences of sequences. The capacity is only limited by the number of nodes provided. Selected simulation results are reported to illustrate system properties.National Science Foundation (IRI-9024877

Controlling Systemic Risk Through Corporate Governance

Most of the regulatory measures to control excessive risk taking by systemically important firms are designed to reduce moral hazard and to align the interests of managers and investors. These measures may be flawed because they are based on questionable assumptions. Excessive corporate risk taking is, at its core, a corporate governance problem. Shareholder primacy requires managers to view the consequences of their firm’s risk taking only from the standpoint of the firm and its shareholders, ignoring harm to the public. In governing, managers of systemically important firms should also consider public harm. This proposal engages the long-standing debate whether corporate governance law should require some duty to the public. The accepted wisdom is that corporate profit maximization provides jobs and other benefits that exceed public harm. The debate requires rethinking for systemic economic harm. This policy brief rethinks that debate, demonstrating that a corporate governance duty can be designed to control systemic risk without unduly weakening wealth production

Interior topography and the fabric of terrain

This paper re-examines relationships between interiors and landscape, focusing on indoor/outdoor continuities, transient and material; and the navigation of space through time, at a range of scales. The paper attempts to extend critical discourse through exchange of ideas and vocabularies The paper explores interiors and landscape through the lens of the Woodland Cemetery Stockholm created by Gunnar Asplund and Sigurd Lewerentz, between 1915 -1940. The cemetery covers an area of one square kilometre South of Stockholm city centre. In1994 Woodland Cemetery was designated an UNESCO World Heritage Site and in 2009 was the subject of a competition to design a new crematorium to replace the function of the existing, which is to be retained

An investigation of the relation of space to society: a discussion on A. Giddens, H. Lefebvre and space syntax

This thesis is dealing with the relation of society and space as a main characteristic for elucidating the design process. More particular is based on the problem which appears both in spatial and social theories of relating entities which ‘are in different scales’. This is the relation of space, which is a local notion, to society, which is a global idea or the relation of society to the everyday life, which is also local and spatial. Thιs thesis attempts to investigate the relation of society to space through this core problem by examining three theories which seem to deal with this issue. These are the Space Syntax Theory of Hillier and Hanson, the Structuration theory of Giddens and the theory of the Production of Space of Lefebvre. The first has an architectural and urban point of view of the matter, the second a sociological and the third a politico-economic. The discussion of the three theories shows that all three grasp an interrelation between society and space although each theory sees this interrelation in a different way. For the Structuration theory space has an important role in the structuration of society, for Space Syntax a constructive role of the generic forms of society and for Lefebvre an instrumental character

Keynote Address, Regulating Corporate Governance in the Public Interest: The Case of Systemic Risk

There’s long been a debate whether corporate governance law should require some duty to the public. The accepted wisdom is not to require such a duty—that corporate profit maximization provides jobs and other public benefits that exceed any harm. This is especially true, the argument goes, because imposing specific regulatory requirements and making certain actions illegal or tortious can mitigate the harm without unduly impairing corporate wealth production. Whether that is true in other contexts, this paper—delivered as the keynote address at the June 2016 National Business Law Scholars Conference at The University of Chicago Law School—questions if it’s true in the context of systemic economic harm. The paper argues that corporate governance law should require some duty to the public in order to help mitigate that harm. Even if imperfect, such a duty represents an important step towards shaping corporate governance norms to begin to take the public into account

Keynote Address, Regulating Corporate Governance in the Public Interest: The Case of Systemic Risk

There’s long been a debate whether corporate governance law should require some duty to the public. The accepted wisdom is not to require such a duty—that corporate profit maximization provides jobs and other public benefits that exceed any harm. This is especially true, the argument goes, because imposing specific regulatory requirements and making certain actions illegal or tortious can mitigate the harm without unduly impairing corporate wealth production. Whether that is true in other contexts, this paper—delivered as the keynote address at the June 2016 National Business Law Scholars Conference at The University of Chicago Law School—questions if it’s true in the context of systemic economic harm. The paper argues that corporate governance law should require some duty to the public in order to help mitigate that harm. Even if imperfect, such a duty represents an important step towards shaping corporate governance norms to begin to take the public into account