An important part of the explanatory role of concepts is that they enable us to combine a wide variety of objects, properties and relations in thought, with contents spanning diverse domains. I discuss an argument that appears to show that paradigmatic non-linguistic representational formats are unsuited to play this role, and thus conceptual representation could not occur in these formats. I show that this argument fails, because it overlooks the possibility of individual concepts being shared between a number of (...) special purpose representational systems. Demonstrating this requires defending the possibility of cross-format redeployment of concepts. (shrink)

This article explores the correlations between linguistic figurative features and their corresponding conceptual representations, by considering their respective continuities and discontinuities in language shift. I compare the figurative encoding of emotions in Kriol, a creole of northern Australia, with those of Dalabon, one of the languages replaced by this creole, with a particular focus on evidence from metaphorical gestures. The conclusions are three-fold. Firstly, the prominent figurative association between the body and the emotions observed in Dalabon is, overall, (...) not matched in Kriol. Secondly, although this association is not prominent in Kriol, it is not entirely absent. It surfaces where speakers are less constrained by linguistic conventions: in non-conventionalized tropes, and gestures in particular. Indeed, some of the verbal emotion metaphors that have disappeared with language shift are preserved as gestural metaphors. Thus, Kriol speakers endorse the conceptual association between emotions and the body, in spite of the lower linguistic incidence of this association. The third conclusion is that therefore, in language shift, conceptual figurative representations and linguistic figurative representations are independent of each other. The former can persist when the latter largely disappear. Conversely, the fact that speakers endorse a certain type of conceptual representation does not entail that they will use corresponding linguistic forms in the new language. The transfer of linguistic figurative representations seems to depend, instead, upon purely linguistic parameters. (shrink)

Emerging evidence suggests that the long-established distinction between habit-based and goal-directed decision-making mechanisms can also be sustained in humans. Although the habit-based system has been extensively studied in humans, the goal-directed system is less well characterized. This review brings to that task the distinction between conceptual and nonconceptual representational mechanisms. Conceptual representations are structured out of semantic consituents - the use of which requires an ability to perform some language-like syntactic processing. Decision making - as investigated by (...) neuroscience and psychology - is normally studied in isolation from questions about concepts as studied in philosophy and cognitive psychology. We ask what role concepts play in the "goal-directed" decision-making systems. We argue that one fruitful way of studying this system in humans is to investigate the extent to which it deploys conceptual representations. (shrink)

This paper describes a belief understanding system which, taking an interview-text as its input, builds a conceptual representation of a respondent's belief system concerning a given object. Central to the understanding process is the identification of the connections between the object and the believer's goals. A general scheme governing the inference-processes with respect to these object-goal relationships is presented. It is suggested that the implementation of BUS could proceed from Schank's et al Integrated Partial Parsing program. The system's behavior (...) is illustrated by examining the processing of a fragment of an interview-text. Some implications for the study of belief systems are discussed. (shrink)

Many neuroimaging studies of semantic memory have argued that knowledge of an object's perceptual properties are represented in a modality-specific manner. These studies often base their argument on finding activation in the left-hemisphere fusiform gyrus-a region assumed to be involved in perceptual processing-when the participant is verifying verbal statements about objects and properties. In this paper, we report an extension of one of these influential papers-Kan, Barsalou, Solomon, Minor, and Thompson-Schill (2003 )-and present evidence for an amodal component in the (...) representation and processing of perceptual knowledge. Participants were required to verify object-property statements (e.g., "cat-whiskers?"; "bear-wings?") while they were being scanned by functional magnetic resonance imaging (fMRI). We replicated Kan et al.'s activation in the left fusiform gyrus, but also found activation in regions of left inferior frontal gyrus (IFG) and middle-temporal gyrus, areas known to reflect amodal processes or representations. Further, only activations in the left IFG, an amodal area, were correlated with measures of behavioural performance. (shrink)

Many views of utterance comprehension agree that understanding an utterance involves knowing, believing, perceiving, or, anyhow, mentally representing the utterance to mean such-and-such. They include cognitivist as well as many perceptualist views; I give them the generic label ‘representationalist’. Representationalist views have been criticized for placing an undue metasemantic demand on utterance comprehension, viz. that speakers be able to represent meaning as meaning. Critics have adverted to young speakers, say about the age of three, who do comprehend many utterances but (...) may be rather limited in their abilities to think about meaning as such, to cast doubt on this demand. This paper motivates representationalism, examines what the balance of developmental evidence and arguments shows, and identifies options for a representationalist response. Though there is some evidence that three-year-olds have limited abilities to think about meaning as such, they may yet turn out to have a concept of meaning, or at least some proto-semantic concept. Moreover, even if they lack any such concept, there is, I propose, a way of developing representationalism, drawing inspiration from Davidson’s paratactic view of indirect speech reports, on which meaning can be non-conceptually represented. Independently of developmental considerations, this paratactic-style proposal is of interest to friends of a perceptualist view of comprehension. (shrink)

Consciousness is familiar to us first hand, yet difficult to understand. This book concerns six basic concepts of consciousness exercised in ordinary English. The first is the interpersonal meaning and requires at least two people involved in relation to one another. The second is a personal meaning, having to do with one's own perspective on the kind of person one is and the life one is leading. The third meaning has reference simply to one being occurrently aware of something or (...) as though of something. The fourth narrows the preceding sense to one having direct occurrent awareness of happenings in one's own experiential stream. The fifth is the unitive meaning of consciousness and has reference to those portions of one's stream that one self-appropriates to make up one's conscious being. The last is the general-state meaning and picks out the general operating mode in which we most often function. (shrink)

Machery emphasizes the centrality of explanation for theory-based approaches to concepts. I endorse Machery's emphasis on explanation and consider recent advances in psychology that point to the of explanation, with consequences for Machery's heterogeneity hypothesis about concepts.

I address the problem of the distinction between semantic and conceptual representations from general considerations about how to distinguish a representational kind. I consider three different ways of telling representational kinds apart – in terms of structure, processing and content – and I examine if semantic representations may constitute a distinct kind with respect to each of them. I argue that the best options for semantic representation to be regarded as a distinct representational kind with respect to (...) each of the three criteria conflict with each other, since it appears respectively as an atomic representation, as a sort of procedural rule or as a structured complex. (shrink)

I address the problem of the distinction between semantic and conceptual representations from general considerations about how to distinguish a representational kind. I consider three different ways of telling representational kinds apart – in terms of structure, processing and content – and I examine if semantic representations may constitute a distinct kind with respect to each of them. I argue that the best options for semantic representation to be regarded as a distinct representational kind with respect to (...) each of the three criteria conflict with each other, since it appears respectively as an atomic representation, as a sort of procedural rule or as a structured complex. (shrink)

Five experiments provide evidence for a class of ‘dual character concepts.’ Dual character concepts characterize their members in terms of both (a) a set of concrete features and (b) the abstract values that these features serve to realize. As such, these concepts provide two bases for evaluating category members and two different criteria for category membership. Experiment 1 provides support for the notion that dual character concepts have two bases for evaluation. Experiments 2-4 explore the claim that dual character concepts (...) have two different criteria for category membership. The results show that when an object possesses the appropriate concrete features, but does not fulfill the appropriate abstract value, it is judged to be a category member in one sense but not in another. Finally, Experiment 5 uses the theory developed here to construct artificial dual character concepts and examines whether participants react to these artificial concepts in the same way as naturally occurring dual character concepts. The present studies serve to define the nature of dual character concepts and distinguish them from other types of concepts (e.g., natural kind concepts), which share some, but not all of the properties of dual character concepts. More broadly, these phenomena suggest a normative dimension in everyday conceptual representation. (shrink)

The concepts expressed by social role terms such as artist and scientist are unique in that they seem to allow two independent criteria for categorization, one of which is inherently normative. This study presents and tests an account of the content and structure of the normative dimension of these “dual character concepts.” Experiment 1 suggests that the normative dimension of a social role concept represents the commitment to fulfill the idealized basic function associated with the role. Background information can affect (...) which basic function is associated with each social role. However, Experiment 2 indicates that the normative dimension always represents the relevant commitment as an end in itself. We argue that social role concepts represent the commitments to basic functions because that information is crucial to predict the future social roles and role-dependent behavior of others. (shrink)

In this article we present an advanced version of Dual-PECCS, a cognitively-inspired knowledge representation and reasoning system aimed at extending the capabilities of artificial systems in conceptual categorization tasks. It combines different sorts of common-sense categorization (prototypical and exemplars-based categorization) with standard monotonic categorization procedures. These different types of inferential procedures are reconciled according to the tenets coming from the dual process theory of reasoning. On the other hand, from a representational perspective, the system relies on the hypothesis of (...) conceptual structures represented as heterogeneous proxytypes. Dual-PECCS has been experimentally assessed in a task of conceptual categorization where a target concept illustrated by a simple common-sense linguistic description had to be identified by resorting to a mix of categorization strategies, and its output has been compared to human responses. The obtained results suggest that our approach can be beneficial to improve the representational and reasoning conceptual capabilities of standard cognitive artificial systems, and –in addition– that it may be plausibly applied to different general computational models of cognition. The current version of the system, in fact, extends our previous work, in that Dual-PECCS is now integrated and tested into two cognitive architectures, ACT-R and CLARION, implementing different assumptions on the underlying invariant structures governing human cognition. Such integration allowed us to extend our previous evaluation. (shrink)

There is evidence in Kant of the idea that concepts of particular numbers, such as the number 5, are derived from the representation of units, and in particular pure units, that is, units that are qualitatively indistinguishable. Frege, in contrast, rejects any attempt to derive concepts of number from the representation of units. In the Foundations of Arithmetic, he softens up his reader for his groundbreaking and unintuitive analysis of number by attacking alternative views, and he devotes the majority of (...) this attack to the units view, with particular attention to pure units. Since Frege, the units view has been all but abandoned. Nevertheless, the idea that concepts of number are derived from the representation of units has a long history, beginning with the ancient Greeks, and was prevalent among Frege's contemporaries. I am not interested in resurrecting the units view or in righting wrongs in Frege's criticisms of his contemporaries. Rather, I am interested in the program of deriving concepts of number from pure units and its history from Kant to Frege. An examination of that history helps us understand the units view in a way that Frege's criticisms do not, and in the process uncovers important features of both Kant's and Frege's views. I will argue that, although they had deep differences, Kant and Frege share assumptions about what such a view would require and about the limits of conceptual representation. I will also argue that they would have rejected the accounts given by some of Frege's contemporaries for the same reasons. Despite these agreements, however, there is evidence that Kant thinks that space and time play a role in overcoming the limitations of conceptual representation, while Frege argues that they do not. (shrink)

What is the relation between the three following elements: words, pictures, and conceptual representations? And how do these three elements work, in defining and explaining metaphors? These are the questions that we tackle in our interdisciplinary contribution, which moves across cognitive linguistics, cognitive sciences, philosophy and semiotics. Within the cognitive linguistic tradition, scholars have assumed that there are equivalent and comparable structures characterizing the way in which metaphor works in language and in pictures. In this paper we analyze (...) contextual visual metaphors, which are considered to be the most complex ones, and we compare them to those that in language are called indirect metaphors. Our proposal is that a syllogistic mechanism of comprehension permeates both metaphors expressed in the verbal modality as well as metaphors expressed in the pictorial modality. While in the verbal modality the metaphoric syllogism is solved by inference, we argue that in the pictorial modality the role of inference is performed through mental imagery. (shrink)

The paper presents the heterogeneous proxytypes hypothesis as a cognitively-inspired computational framework able to reconcile, in both natural and artificial systems, different theories of typicality about conceptual representation and reasoning that have been traditionally seen as incompatible. In particular, through the Dual PECCS system and its evolution, it shows how prototypes, exemplars and theory-theory like conceptual representations can be integrated in a cognitive artificial agent (thus extending its categorization capabilities) and, in addition, can provide useful insights in (...) the context of a computationally grounded science of the mind. (shrink)

This paper connects the debate regarding perceptual representation of high-level properties and the debate regarding non-conceptual perceptual representation. I present and defend a distinction between representationally-complex properties and properties that are simpler to represent and offer ways of assessing whether a property is representationally complex. I address conditions under which such a property might be non-conceptually represented and conclude that most representationally-complex properties are simply too complex to be non-conceptually represented. Thus, most mental states that represent representationally-complex properties must (...) be conceptual. This conclusion is relevant for a variety of philosophical theories (perception, ethics, emotions, pain) and is especially dramatic with respect to accounts according to which a mental state can non-conceptually represent such properties. As a test case for applying my argument I consider a group of such accounts: non-conceptual perceptual views of emotions, which my argument entails are false. I end by considering the implications my argument has for different theories. -/- . (shrink)

Both scientists and children make important structural discoveries, yet their computational underpinnings are not well understood. Structure discovery has previously been formalized as probabilistic inference about the right structural form—where form could be a tree, ring, chain, grid, etc.. Although this approach can learn intuitive organizations, including a tree for animals and a ring for the color circle, it assumes a strong inductive bias that considers only these particular forms, and each form is explicitly provided as initial knowledge. Here we (...) introduce a new computational model of how organizing structure can be discovered, utilizing a broad hypothesis space with a preference for sparse connectivity. Given that the inductive bias is more general, the model's initial knowledge shows little qualitative resemblance to some of the discoveries it supports. As a consequence, the model can also learn complex structures for domains that lack intuitive description, as well as predict human property induction judgments without explicit structural forms. By allowing form to emerge from sparsity, our approach clarifies how both the richness and flexibility of human conceptual organization can coexist. (shrink)

Theories of relations between language and conceptual development benefit from empirical evidence for concepts available in infancy, but such evidence is comparatively scarce. Here, we examine early representations of specific concepts, namely, sets of dynamic events corresponding either to predicates involving two variables with a reversible, asymmetric relation between them (such as the set of all events that correspond to a linguistic phrase like “a dog is pushing a car,”) or to comparatively simpler, one-variable predicates (such as the (...) set of events corresponding to a phrase like “a dog is jumping.”). We develop a non-linguistic, anticipatory eye-tracking task that can be administered to both infants and adults, and we use this task to gather evidence for the formation and use of such one-and two-place-predicate classes (which we refer to as event sortals) in 12–24-mo-old infants, and in adults with and without concurrent verbal prose shadowing. Using visually similar stimuli for both the simpler (one-place) and the more complex (reversible, asymmetric, two-place) concepts, we find that infants only show evidence for forming and generalizing one-place event sortals, and, while adults succeed with both kinds in the absence of verbal shadowing, shadowing hampers their ability to form and use the asymmetric two-place event sortals. In a subsequent experiment with adults, we find that if the shadowing material is grammatically impoverished, adults now succeed in forming and using both one- and two-place event sortals. We discuss implications of these results for theories of concept acquisition, and the role of language in this process. (shrink)

We investigate the hypothesis that our conceptual systems provide two formally distinct ways of representing categories by investigating the manner in which lexical nominals (e.g., tree, picnic table) and phrasal nominals (e.g., black bird, birds that like rice) are interpreted. Four experiments found that lexical nominals may be mapped onto kind representations, whereas phrasal nominals map onto class representations but not kind representations. Experiment 1 found that phrasal nominals, unlike lexical nominals, are mapped onto categories whose (...) members need not be of a single kind. Experiments 2 and 3 found that categories named by lexical nominals enter into both class inclusion and kind hierarchies and thus support both class inclusion (is a) and kind specification (kind of) relations, whereas phrasal nominals map onto class representations which support only class inclusion relations. Experiment 4 showed that the two types of nominals represent hierarchical relations in different ways. Phrasal nominals (e.g., white bear) are mapped onto classes that have criteria of membership in addition to those specified by the class picked out by the head noun of the phrase (e.g., bear). In contrast, lexical nominals (e.g., polar bear) specify one way to meet the criteria specified by the more general kind concept (e.g., bear). Implications for the language–conceptual system interface, representation of hierarchical relations, lexicalization, and theories of conceptual combination are discussed. (shrink)

This paper investigates the connection of intellectual humility to a somewhat neglected form of a limitation of human knowledge—a limitation in which facts or truths we human beings can in principle represent conceptually. I consider some arguments for such a limitation, and argue that, under standard assumptions, the sub-algebra hypothesis is the best hypothesis about how the facts we can represent relate to the ones that we can not. This hypothesis has a consequence for intellectual humility in that it supports (...) it in metaphysics, but not in ordinary inquiry. (shrink)

During the last decades, many cognitive architectures (CAs) have been realized adopting different assumptions about the organization and the representation of their knowledge level. Some of them (e.g. SOAR [35]) adopt a classical symbolic approach, some (e.g. LEABRA[ 48]) are based on a purely connectionist model, while others (e.g. CLARION [59]) adopt a hybrid approach combining connectionist and symbolic representational levels. Additionally, some attempts (e.g. biSOAR) trying to extend the representational capacities of CAs by integrating diagrammatical representations and reasoning (...) are also available [34]. In this paper we propose a reflection on the role that Conceptual Spaces, a framework developed by Peter G¨ardenfors [24] more than fifteen years ago, can play in the current development of the Knowledge Level in Cognitive Systems and Architectures. In particular, we claim that Conceptual Spaces offer a lingua franca that allows to unify and generalize many aspects of the symbolic, sub-symbolic and diagrammatic approaches (by overcoming some of their typical problems) and to integrate them on a common ground. In doing so we extend and detail some of the arguments explored by G¨ardenfors [23] for defending the need of a conceptual, intermediate, representation level between the symbolic and the sub-symbolic one. In particular we focus on the advantages offered by Conceptual Spaces (w.r.t. symbolic and sub-symbolic approaches) in dealing with the problem of compositionality of representations based on typicality traits. Additionally, we argue that Conceptual Spaces could offer a unifying framework for interpreting many kinds of diagrammatic and analogical representations. As a consequence, their adoption could also favor the integration of diagrammatical representation and reasoning in CAs. (shrink)

Conceptual engineering has been linked by Herman Cappelen to a position called “representational skepticism”, described as one’s refusal to uncritically take over the conceptual representations one is handed. This position is contrasted with an uncritical attitude, called “representational complacency”. Arguably, neither position, or a hybrid of the two, is rationally sustainable. This paper therefore proposes an alternative option, called “critical concept conservatism”, stating that having a concept makes it rational (in a suitable sense of “rational”) for one (...) to retain it, unless there are grounds to question it. Critical concept conservatism avoids the drawbacks of skepticism and complacency; plus, it is independently supported by both positive and negative considerations. Furthermore, it complies with the demanding attitude towards conceptual representations that a conceptual engineer would be expected to have. (shrink)

Philosophers often hold that the aim of conceptual analysis is to discover the representational content of a given concept such as freewill, belief, or law. In From Metaphysics to Ethics and other recent work, Frank Jackson has developed a theory of conceptual analysis that is one of the most advanced systematizations of this widespread idea. I argue that this influential way of characterizing conceptual analysis is too narrow. I argue that it is possible that an expressivist account (...) could turn out to be correct as a genuine conceptual analysis of a genuine concept. I claim that since an expressivist analysis does not aim to discover the representational content of a given concept—and, indeed, might itself be based on the idea that the concept in question is not even representational in nature—the possibility of expressivist conceptual analysis shows that Jackson’s theory of conceptual analysis is incomplete as it currently stands. I conclude that Jackson needs to either shift his basic understanding of the nature of conceptual analysis or commit to a particular normative reinterpretation of his project. (shrink)

The dominating models of information processes have been based on symbolic representations of information and knowledge. During the last decades, a variety of non-symbolic models have been proposed as superior. The prime examples of models within the non-symbolic approach are neural networks. However, to a large extent they lack a higher-level theory of representation. In this paper, conceptual spaces are suggested as an appropriate framework for non- symbolic models. Conceptual spaces consist of a number of 'quality dimensions' (...) that often are derived from perceptual mechanisms. It will be outlined how conceptual spaces can represent various kind of information and how they can be used to describe concept learning. The connections to prototype theory will also be presented. (shrink)

The notion of conceptuality is still unclear and vague. I will present a definition of conceptual and nonconceptual representations that is grounded in different aspects of the representations’ structures. This definition is then used to interpret empirical results from human and animal navigation. It will be shown, that the distinction between egocentric and allocentric spatial representations can be matched onto the conceptual vs. nonconceptual distinction. The phenomena discussed in spatial navigation are thereby put into a (...) wider context of cognitive abilities, which allows for new explanations of certain features of spatial representations and how they are linked to other capacities, like perception and reasoning. (shrink)

:Space is not an empirical concept that has been drawn from outer experiences. For in order for certain sensations to be related to something outside me , thus in order for me to represent them as outside and next to one another, thus not merely different but as in different places, the representation of space must already be their ground. Thus the representation of space cannot be obtained from the relations of outer appearance through experience, but this outer experience is (...) itself first possible only through this representation. 1Abstract:Der Raum is kein empirischer Begriff, der von äußeren Erfahrungen abgezogen worden. Denn damit gewisse Empfindungen auf etwas außer mir bezogen werden, imgleichen damit ich sie als außer und neben einander, mithin nicht bloß verschieden, sondern als in verschiedenen Orten vorstellen können, dazu muß die Vorstellung des Raumes schon zum Grunde liegen. (shrink)

Political Representation: A Historical and Conceptual investigation into Its Polysemy The aim of this study is to value the complexity of theoretical formulations that different traditions and authors have provided on the problem of political representation. This is achieved by relying on a text that has pioneered this kind of investigation: Hasso Hofmann s Repräsentation: Studien zur Wort- und Begriffsgeschichte von der Antike bis ins 19. Jahrhundert. Hofmann s book, originally published in German in 1974, has not received due (...) attention in the contemporary debate on representation and is scarcely known in the non-German academic environment. However, its unique methodological and conceptual outlook on representation has much to contribute to the current debate on this topic. Hofmann s main objective is to draw a history and theory of representation that values the polysemy of the Latin word repraesentatio from Antiquity until the 19th century. To achieve this goal, Hofmann analyses the diverse meanings that have been attached to the word representation throughout its history, from its inception in the Latin world onwards. To prove the relevance of this approach for the contemporary debate, I apply Hofmann s semantic-conceptual map of representation to the study of political representation in such diverse authors as Marsilius of Padua, Carl Schmitt, Thomas Hobbes, Ernst Kantorowicz as well as contemporary authors such as Bernard Manin, Nadia Urbinati, Frank Ankersmit, John Dryzek and others. In so doing, I show that the answer to the question: what makes representation a political notion? is far from univocal. Moreover, I argue that Hofmann s interpretive lens provides an alternative approach to what is still considered the classical study of political representation in the Anglophone world: Hanna Pitkin s The Concept of Representation. By critically comparing Pitkin and Hofmann s approaches to the problem of political representation, my aim is to demonstrate that Pitkin s normative perspective should be revised. Pitkin argues, first, that it is possible to pinpoint a general meaning of the concept of representation as making present again and, second, that there is a general concept of political representation that is identified with substantive acting for and in which all aesthetic meanings of representation are excluded. In contrast to this approach, Hofmann stresses the polysemyc character of representation, and the impossibility of narrowing down a general meaning of the concept. Drawing on Hofmann, one can argue that the semantic richness of political representation is just as broad as that of the word representation itself and that what makes representation political varies from epoch to epoch, from author to author. As a result, the common way to look at political representation nowadays, i.e. as democratic representation, is far from the only one but constitutes, rather, just one of the numerous ways to look at this concept over time. Using Hofmann s perspective for the study of political representation also helps us show that the aesthetic meanings of representation are always and intrinsically bound up with political representation in all the authors who have theorized this concept. In contrast to Pitkin, one could argue that any meaningful concept of political representation must also include the aesthetic and symbolic meanings of representation. Accordingly, it is impossible to think of political representation without accounting for its symbolic dimension as Darstellung. (shrink)

Readership: One of the most thorough examinations of mental representation and meaning holism available, this book should be read by everyone interested in the...

It is largely assumed that conceptual engineering is essentially about revising, introducing, or eliminating representational devices, in particular the intension and extension of words and concepts. However, tying conceptual engineering too closely to representations is risky. Not everyone endorses the notion of representation as theoretically helpful or even real. Not everyone thinks that concepts or meanings should be understood in terms of the notion of representation. Does this mean that conceptual engineering is not interesting or relevant (...) for these skeptics? In this paper, I motivate and propose a non-representationalist construal of conceptual engineering. I argue that conceptual engineers can be understood as primarily engineering linguistic entitlements and commitments rather than representational devices. Note that this account is non-representationalist, but explicitly not anti-representationalist. Representations may play a significant role when it comes to justifying and completing commitment engineering projects. (shrink)

This paper suffers from a disconcerting generality. I need an excuse for wandering from Wittgenstein's Tractatus to Picasso's drawing of a Weeping Woman, via the philosophy of science and the theory of sense data. The thesis of the paper is that I have such an excuse. These are all areas where the concept of representation either exists in its own right, or has been found to be illuminating by philosophers. An important question is whether it could be the same concept (...) in all these cases. I wish to claim that there is an illuminating common concept, even though to find it may require some fairly drastic modifications of some of the philosophical theses that are involved. (shrink)

This paper suffers from a disconcerting generality. I need an excuse for wandering from Wittgenstein's Tractatus to Picasso's drawing of a Weeping Woman, via the philosophy of science and the theory of sense data. The thesis of the paper is that I have such an excuse. These are all areas where the concept of representation either exists in its own right, or has been found to be illuminating by philosophers. An important question is whether it could be the same concept (...) in all these cases. I wish to claim that there is an illuminating common concept, even though to find it may require some fairly drastic modifications of some of the philosophical theses that are involved. (shrink)

Why is a red face not really red? How do we decide that this book is a textbook or not? Conceptual spaces provide the medium on which these computations are performed, but an additional operation is needed: Contrast. By contrasting a reddish face with a prototypical face, one gets a prototypical ‘red’. By contrasting this book with a prototypical textbook, the lack of exercises may pop out. Dynamic contrasting is an essential operation for converting perceptions into predicates. The existence (...) of dynamic contrasting may contribute to explaining why lexical meanings correspond to convex regions of conceptual spaces. But it also explains why predication is most of the time opportunistic, depending on context. While off-line conceptual similarity is a holistic operation, the contrast operation provides a context-dependent distance that creates ephemeral predicative judgments that are essential for interfacing conceptual spaces with natural language and with reasoning. (shrink)