Abstract Since their inception, distributional models of semantics have been criticized as inadequate cognitive theories of human semantic learning and representation. A principal challenge is that the representations derived by distributional models are purely symbolic and are not grounded in perception and action; this challenge has led many to favor feature-based models of semantic representation. We argue that the amount of perceptual and other semantic information that can be learned from purely distributional statistics has been underappreciated. We compare the representations (...) of three feature-based and nine distributional models using a semantic clustering task. Several distributional models demonstrated semantic clustering comparable with clustering-based on feature-based representations. Furthermore, when trained on child-directed speech, the same distributional models perform as well as sensorimotor-based feature representations of children’s lexical semantic knowledge. These results suggest that, to a large extent, information relevant for extracting semantic categories is redundantly coded in perceptual and linguistic experience. Detailed analyses of the semantic clusters of the feature-based and distributional models also reveal that the models make use of complementary cues to semantic organization from the two data streams. Rather than conceptualizing feature-based and distributional models as competing theories, we argue that future focus should be on understanding the cognitive mechanisms humans use to integrate the two sources. (shrink)

The words in children's language learning environments are strongly predictive of cognitive development and school achievement. But how do we measure language environments and do so at the scale of the many words that children hear day in, day out? The quantity and quality of words in a child's input are typically measured in terms of total amount of talk and the lexical diversity in that talk. There are disagreements in the literature whether amount or diversity is the more critical (...) measure of the input. Here we analyze the properties of a large corpus of speech to children and simulate learning environments that differ in amount of talk per unit time, lexical diversity, and the contexts of talk. The central conclusion is that what researchers need to theoretically understand, measure, and change is not the total amount of words, or the diversity of words, but the function that relates total words to the diversity of words, and how that function changes across different contexts of talk. (shrink)

The literature contains a disconnect between accounts of how humans learn lexical semantic representations for words. Theories generally propose that lexical semantics are learned either through perceptual experience or through exposure to regularities in language. We propose here a model to integrate these two information sources. Specifically, the model uses the global structure of memory to exploit the redundancy between language and perception in order to generate inferred perceptual representations for words with which the model has no perceptual experience. We (...) test the model on a variety of different datasets from grounded cognition experiments and demonstrate that this diverse set of results can be explained as perceptual simulation (cf. Barsalou, Simmons, Barbey, & Wilson, 2003) within a global memory model. (shrink)

When searching for concepts in memory—as in the verbal fluency task of naming all the animals one can think of—people appear to explore internal mental representations in much the same way that animals forage in physical space: searching locally within patches of information before transitioning globally between patches. However, the definition of the patches being searched in mental space is not well specified. Do we search by activating explicit predefined categories and recall items from within that category, or do we (...) activate and recall a connected sequence of individual items without using categorical information, with each item recalled leading to the retrieval of an associated item in a stream, or both? Using semantic representations in a search of associative memory framework and data from the animal fluency task, we tested competing hypotheses based on associative and categorical search models. Associative, but not categorical, patch transitions took longer to make than position-matched productions, suggesting that categorical transitions were not true transitions. There was also clear evidence of associative search even within categorical patch boundaries. Furthermore, most individuals' behavior was best explained by an associative search model without the addition of categorical information. Thus, our results support a search process that does not use categorical information, but for which patch boundaries shift with each recall and local search is well described by a random walk in semantic space, with switches to new regions of the semantic space when the current region is depleted. (shrink)

We compared the ability of three different contextual models of lexical semantic memory and of a simple associative model to predict the properties of semantic networks derived from word association norms. None of the semantic models were able to accurately predict all of the network properties. All three contextual models over-predicted clustering in the norms, whereas the associative model under-predicted clustering. Only a hybrid model that assumed that some of the responses were based on a contextual model and others on (...) an associative network successfully predicted all of the network properties and predicted a word's top five associates as well as or better than the better of the two constituent models. The results suggest that participants switch between a contextual representation and an associative network when generating free associations. We discuss the role that each of these representations may play in lexical semantic memory. Concordant with recent multicomponent theories of semantic memory, the associative network may encode coordinate relations between concepts, and contextual representations may be used to process information about more abstract concepts. (shrink)

Distributional models of semantics learn word meanings from contextual co‐occurrence patterns across a large sample of natural language. Early models, such as LSA and HAL (Landauer & Dumais, 1997; Lund & Burgess, 1996), counted co‐occurrence events; later models, such as BEAGLE (Jones & Mewhort, 2007), replaced counting co‐occurrences with vector accumulation. All of these models learned from positive information only: Words that occur together within a context become related to each other. A recent class of distributional models, referred to (...) as neural embedding models, are based on a prediction process embedded in the functioning of a neural network: Such models predict words that should surround a target word in a given context (e.g., word2vec; Mikolov, Sutskever, Chen, Corrado, & Dean, 2013). An error signal derived from the prediction is used to update each word's representation via backpropagation. However, another key difference in predictive models is their use of negative information in addition to positive information to develop a semantic representation. The models use negative examples to predict words that should not surround a word in a given context. As before, an error signal derived from the prediction prompts an update of the word's representation, a procedure referred to as negative sampling. Standard uses of word2vec recommend a greater or equal ratio of negative to positive sampling. The use of negative information in developing a representation of semantic information is often thought to be intimately associated with word2vec's prediction process. We assess the role of negative information in developing a semantic representation and show that its power does not reflect the use of a prediction mechanism. Finally, we show how negative information can be efficiently integrated into classic count‐based semantic models using parameter‐free analytical transformations. (shrink)

Ecclesia and Ethics considers the subject of Ecclesial Ethics within its theological, theoretical and exegetical contexts. Part one presents the biblical-theological foundations of an ecclesial ethic – examining issues such as creation, and Paul's theology of the Cross. Part two moves on to examine issues of character formation and community. Finally, part three presents a range of exegetical applications, which examine scripture and ethics in praxis. These essays look at hot-button issues such as the 'virtual self' in the digital age, (...) economics, and attitudes to war. The collection includes luminaries such as N.T. Wright, Michael J. Gorman, Stanley Hauerwas and Dennis Hollinger, as well as giving space to new theological and exegetical voices. As such Ecclesia and Ethics provides a challenging and contemporary examination of modern ethical debates in the light of up-to-date theology and exegesis. (shrink)

Forster demonstrates that Hegel did not in fact ignore epistemology, but on the contrary he fought a tireless and subtle campaign to defeat the threat of skepticism. Forster's work should dispel once and for all the view that Hegel was naive or careless in epistemological matters. Along the way, Forster makes much that has hither to remained obscure in Hegel's texts intelligible for the first time.

There are at least twelve major virtues of good theories: evidential accuracy, causal adequacy, explanatory depth, internal consistency, internal coherence, universal coherence, beauty, simplicity, unification, durability, fruitfulness, and applicability. These virtues are best classified into four classes: evidential, coherential, aesthetic, and diachronic. Each virtue class contains at least three virtues that sequentially follow a repeating pattern of progressive disclosure and expansion. Systematizing the theoretical virtues in this manner clarifies each virtue and suggests how they might have a coordinated and cumulative (...) role in theory formation and evaluation across the disciplines—with allowance for discipline specific modification. An informal and flexible logic of theory choice is in the making here. Evidential accuracy, according to my systematization, is not a largely isolated trait of good theories, as some have made it out to be. Rather, it bears multifaceted relationships, constituting significant epistemic entanglements, with other theoretical virtues. (shrink)

Der Band "Idealismus und Romantik in Jena" nimmt die Jenaer Blütezeit zwischen 1794 und 1807 in den Blick und interpretiert sie als ein Neben- und Gegeneinander der beiden einflussreichsten Geistesströmungen um 1800. In Jena entstehen zwischen 1794 und 1807 zwei geistesgeschichtliche Strömungen von Weltgeltung: der Idealismus und die Romantik. Die rasante Entwicklung immer neuer Ideen ist durch eine beträchtliche Anzahl junger, kreativer Geister geprägt, die in fruchtbarem Austausch und gegenseitiger Kritik um ein neues, angemessenes Verständnis der Moderne ringen. Im Fokus (...) des Bandes stehen Fragen zu einzelnen Autoren genauso wie zum Verhältnis beider Strömungen zueinander. The volume Idealism and Romanticism in Jena focuses on the period between 1794 and 1807 in which creative and original minds developed new ideas for understanding the modern world. The contributions examine the relationship between German Idealism and Early Romanticism: What distinguishes/combines Idealism and Romanticism? What common aspects, synergies and goals arise? And what does the opposition between the two movements means for the question of modernity? (shrink)

New brain-computer interface and neuroimaging techniques are making differentiation less ambiguous and more accurate between unresponsive wakefulness syndrome patients and patients with higher cognitive function and awareness. As research into these areas continues to progress, new ethical issues will face physicians of patients suffering from total locked-in syndrome, characterized by complete loss of voluntary muscle control, with retention of cognitive function and awareness detectable only with neuroimaging and brain-computer interfaces. Physicians, researchers, ethicists and hospital ethics committees should be aware of (...) and prepared to handle ethical issues unique to these totally locked-in patients. Several thought experiments are discussed, to highlight potential ethical dilemmas surrounding surrogate decision-making, autonomy, end-of-life care, and pediatric care, which will be unique to total LIS patients. These, along with other ethical problems especially relevant to total LIS patients, merit further discussion among physicians, researchers, ethicists and hospital ethics committees, to facilitate consensus regarding these issues, and improve patient care. (shrink)

In the future, human destiny may depend on our ethics. In particular, biotechnology and expansion in space can transform life, raising profound questions. Guidance may be found in Life-centered ethics, as biotic ethics that value the basic patterns of organic gene/protein life, and as panbiotic ethics that always seek to expand life. These life-centered principles can be based on scientific insights into the unique place of life in nature, and the biological unity of all life. Belonging to life then implies (...) a human purpose: to safeguard and propagate life. Expansion in space will advance this purpose but will also raise basic questions. Should we expand all life or only intelligent life? Should we aim to create populations of trillions? Should we seed other solar systems? How far can we change but still preserve the human species, and life itself? The future of all life may be in our hands, and it can depend on our guiding ethics whether life will fulfil its full potentials. Given such profound powers, life-centered ethics can best secure future generations. Our descendants may then understand nature more deeply, and seek to extend life indefinitely. In that future, our human existence can find a cosmic purpose. (shrink)

What is the nature of a conceptual scheme? Are there alternative conceptual schemes? If so, are some more justifiable or correct than others? The later Wittgenstein already addresses these fundamental philosophical questions under the general rubric of "grammar" and the question of its "arbitrariness"--and does so with great subtlety. This book explores Wittgenstein's views on these questions. Part I interprets his conception of grammar as a generalized version of Kant's transcendental idealist solution to a puzzle about necessity. It also seeks (...) to reconcile Wittgenstein's seemingly inconsistent answers to the question of whether or not grammar is arbitrary by showing that he believed grammar to be arbitrary in one sense and non-arbitrary in another. Part II focuses on an especially central and contested feature of Wittgenstein's account: a thesis of the diversity of grammars. The author discusses this thesis in connection with the nature of formal logic, the limits of language, and the conditions of semantic understanding or access. Strongly argued and cleary written, this book will appeal not only to philosophers but also to students of the human sciences, for whom Wittgenstein's work holds great relevance. (shrink)

What is the nature of a conceptual scheme? Are there alternative conceptual schemes? If so, are some more justifiable or correct than others? The later Wittgenstein already addresses these fundamental philosophical questions under the general rubric of "grammar" and the question of its "arbitrariness"--and does so with great subtlety. This book explores Wittgenstein's views on these questions. Part I interprets his conception of grammar as a generalized version of Kant's transcendental idealist solution to a puzzle about necessity. It also seeks (...) to reconcile Wittgenstein's seemingly inconsistent answers to the question of whether or not grammar is arbitrary by showing that he believed grammar to be arbitrary in one sense and non-arbitrary in another. Part II focuses on an especially central and contested feature of Wittgenstein's account: a thesis of the diversity of grammars. The author discusses this thesis in connection with the nature of formal logic, the limits of language, and the conditions of semantic understanding or access. Strongly argued and cleary written, this book will appeal not only to philosophers but also to students of the human sciences, for whom Wittgenstein's work holds great relevance. (shrink)

In Hegel's Idea of a Phenomenology of Spirit, Michael N. Forster advances an original reading of the work.

Introduction: thinking about globalization -- Systemic thinking: Immanuel Wallerstein -- Conceptual thinking: Anthony Giddens -- Sociological thinking: Manuel Castells -- Transformational thinking: David Held and Anthony McGrew -- Sceptical thinking: Paul Hirst and Grahame Thompson -- Spatial thinking: Peter Dicken and Saskia Sassen -- Positive thinking: Thomas Friedman and Martin Wolf -- Reformist thinking: Joseph Stiglitz -- Radical thinking: Naomi Klein, George Monbiot and Subcommandante Marcos -- Revolutinary thinking: Michael Hardt and Antonio Negri -- Cultural thinking: Arjun Appadurai -- (...) Conclusion: rethinking globalization again. (shrink)

This book not only sets the historical record straight but also champions the Herderian tradition for its philosophical depth and breadth.

This book puts forward a much-needed reappraisal of Immanuel Kant's conception of and response to skepticism, as set forth principally in the Critique of Pure Reason. It is widely recognized that Kant's theoretical philosophy aims to answer skepticism and reform metaphysics--Michael Forster makes the controversial argument that those aims are closely linked. He distinguishes among three types of skepticism: "veil of perception" skepticism, which concerns the external world; Humean skepticism, which concerns the existence of a priori concepts and synthetic (...) a priori knowledge; and Pyrrhonian skepticism, which concerns the equal balance of opposing arguments. Forster overturns conventional views by showing how the first of these types was of little importance for Kant, but how the second and third held very special importance for him, namely because of their bearing on the fate of metaphysics. He argues that Kant undertook his reform of metaphysics primarily in order to render it defensible against these types of skepticism. Finally, in a critical appraisal of Kant's project, Forster argues that, despite its strengths, it ultimately fails, for reasons that carry interesting broader philosophical lessons. These reasons include inadequate self-reflection and an underestimation of the resources of Pyrrhonian skepticism. (shrink)

This book should cause a re-evaluation of Hegel, and German Idealism generally, and contribute to a re-evaluation of the skeptical tradition in philosophy.

In the course of developing these historical points, this book also shows that Herder and his tradition are in many ways superior to dominant trends in more ...

Nietzsche and Foucault famously employ a philosophical method of “genealogy” and apply it to the realm of morality in particular. In this article I would like to do two main things: I will begin by offering a contribution toward a sort of “genealogy of genealogy,” that is, toward an account of how the method emerged historically. I will then give an explanation of how the method is supposed to work. In a subsequent, companion article in this journal, “Genealogy and Morality,” (...) I will discuss the method’s application to morality in some concrete ways. (shrink)

Johann Gottfried Herder is a towering figure in modern thought, but one who has hitherto been severely underappreciated. Michael Forster seeks to rectify that situation by exploring the full range of his ideas, and showing their enormous impact in philosophy, linguistics, anthropology, and comparative literature.

In a previous article in this journal, “Genealogy,” I offered a sort of “genealogy of genealogy,” an account of the method’s development, according to which it mainly grew, not from English or French antecedents, but out of a German tradition that began with Herder and then continued with Hegel before eventually culminating in Nietzsche himself. [...] Presupposing this account of the method of genealogy, the present article will consider the method in relation to one of its most important areas of (...) application: morality. (shrink)

It has become very popular among philosophers to attempt to discredit, or at least set severe limits to, the thesis that there exist conceptual schemes radically different from ours. This fashion is misconceived. Philosophers have attempted to justify it in two main ways: by means of arguments which are a priorist relative to the relevant linguistic and textual evidence (and either independent of or based upon positive theories of meaning, understanding, and interpretation); and by means of arguments which are a (...) posteriorist relative to that evidence. The former approach is misconceived, not only in that its particular arguments fail, but also in principle. The latter approach, while in general the right sort of approach to adopt to the question, arrives at its conclusion only through faulty execution, through misinterpretation of the evidence. Though quite unjustified, philosophers' hostility to the thesis of radically different conceptual schemes is easily explained, namely, in terms of a number of psychologically powerful motives which it subserves. These motives cannot step in to provide the missing justification, however. Instead, they reveal such hostility in an even shadier light. (shrink)

Discrediting 'mystical' or 'psychical' interpretations of out-of-body and near-death experiences, Michael Marsh demonstrates how these phenomena are explicable in terms of brain neurophysiology and its neuropathological disturbances, and discusses the theological and philosophical implications of his hypotheses.

Johann Gottfried von Herder is one of the most important German philosophers of the eighteenth century, who had enormous influence on later thinkers such as Hegel, Schleiermacher and Nietzsche. His wide-ranging ideas were formative in the development of linguistics, hermeneutics, anthropology and bible scholarship, and even today they retain their vitality and relevance to an extraordinary degree. This volume presents a translation of Herder's most important and characteristic philosophical writings in his areas of central interest, including philosophy of language, philosophy (...) of mind, philosophy of history and political philosophy, as well as his general philosophical program. An introduction sets the writings in their historical context and examines their philosophical achievement. (shrink)

What was the source of this great flowering? Much of the credit for it has tended to go to Jacobi and Mendelssohn, who in 1785 began a famous public dispute concerning the question whether or not Lessing had been a Spinozist, as Jacobi alleged Lessing had admitted to him shortly before his death in 1781. But Jacobi and Mendelssohn were both negatively disposed towards Spinoza. In On the Doctrine of Spinoza in Letters to Mr.

A better understanding of how schistosomes exploit host nutrients, neuro‐endocrine hormones and signalling pathways for growth, development and maturation may provide new insights for improved interventions in the control of schistosomiasis. This paper describes recent advances in the identification and characterisation of schistosome tyrosine kinase and signalling pathways. It discusses the potential intervention value of insulin signalling, which may play an important role in glucose uptake and carbohydrate metabolism in schistosomes, providing the nutrients essential for parasite growth, development and, notably, (...) female fecundity. Significant progress has also been made in the characterisation of other schistosome growth factor receptors, such as transforming growth factor beta receptor and epidermal growth factor receptor, and in our understanding of their roles in the host‐parasite molecular dialogue and parasite development. The use of parasite signal transduction components as novel vaccine or drug targets may prove invaluable in prevention, treatment and control strategies to combat schistosomiasis. (shrink)