237 research outputs found

    Design: One, but in different forms

    Full text link
    This overview paper defends an augmented cognitively oriented generic-design hypothesis: there are both significant similarities between the design activities implemented in different situations and crucial differences between these and other cognitive activities; yet, characteristics of a design situation (related to the design process, the designers, and the artefact) introduce specificities in the corresponding cognitive activities and structures that are used, and in the resulting designs. We thus augment the classical generic-design hypothesis with that of different forms of designing. We review the data available in the cognitive design research literature and propose a series of candidates underlying such forms of design, outlining a number of directions requiring further elaboration

    Event structures in knowledge, pictures and text

    Get PDF
    This thesis proposes new techniques for mining scripts. Scripts are essential pieces of common sense knowledge that contain information about everyday scenarios (like going to a restaurant), namely the events that usually happen in a scenario (entering, sitting down, reading the menu...), their typical order (ordering happens before eating), and the participants of these events (customer, waiter, food...). Because many conventionalized scenarios are shared common sense knowledge and thus are usually not described in standard texts, we propose to elicit sequential descriptions of typical scenario instances via crowdsourcing over the internet. This approach overcomes the implicitness problem and, at the same time, is scalable to large data collections. To generalize over the input data, we need to mine event and participant paraphrases from the textual sequences. For this task we make use of the structural commonalities in the collected sequential descriptions, which yields much more accurate paraphrases than approaches that do not take structural constraints into account. We further apply the algorithm we developed for event paraphrasing to parallel standard texts for extracting sentential paraphrases and paraphrase fragments. In this case we consider the discourse structure in a text as a sequential event structure. As for event paraphrasing, the structure-aware paraphrasing approach clearly outperforms systems that do not consider discourse structure. As a multimodal application, we develop a new resource in which textual event descriptions are grounded in videos, which enables new investigations on action description semantics and a more accurate modeling of event description similarities. This grounding approach also opens up new possibilities for applying the computed script knowledge for automated event recognition in videos.Die vorliegende Dissertation schlägt neue Techniken zur Berechnung von Skripten vor. Skripte sind essentielle Teile des Allgemeinwissens, die Informationen über alltägliche Szenarien (wie im Restaurant essen) enthalten, nämlich die Ereignisse, die typischerweise in einem Szenario vorkommen (eintreten, sich setzen, die Karte lesen...), deren typische zeitliche Abfolge (man bestellt bevor man isst), und die Teilnehmer der Ereignisse (ein Gast, der Kellner, das Essen,...). Da viele konventionalisierte Szenarien implizit geteiltes Allgemeinwissen sind und üblicherweise nicht detailliert in Texten beschrieben werden, schlagen wir vor, Beschreibungen von typischen Szenario-Instanzen durch sog. “Crowdsourcing” über das Internet zu sammeln. Dieser Ansatz löst das Implizitheits-Problem und lässt sich gleichzeitig zu großen Daten-Sammlungen hochskalieren. Um über die Eingabe-Daten zu generalisieren, müssen wir in den Text-Sequenzen Paraphrasen für Ereignisse und Teilnehmer finden. Hierfür nutzen wir die strukturellen Gemeinsamkeiten dieser Sequenzen, was viel präzisere Paraphrasen-Information ergibt als Standard-Ansätze, die strukturelle Einschränkungen nicht beachten. Die Techniken, die wir für die Ereignis-Paraphrasierung entwickelt haben, wenden wir auch auf parallele Standard-Texte an, um Paraphrasen auf Satz-Ebene sowie Paraphrasen-Fragmente zu extrahieren. Hier betrachten wir die Diskurs-Struktur eines Textes als sequentielle Ereignis-Struktur. Auch hier liefert der strukturell informierte Ansatz klar bessere Ergebnisse als herkömmliche Systeme, die Diskurs-Struktur nicht in die Berechnung mit einbeziehen. Als multimodale Anwendung entwickeln wir eine neue Ressource, in der Text-Beschreibungen von Ereignissen mittels zeitlicher Synchronisierung in Videos verankert sind. Dies ermöglicht neue Ansätze für die Erforschung der Semantik von Ereignisbeschreibungen, und erlaubt außerdem die Modellierung treffenderer Ereignis-Ähnlichkeiten. Dieser Schritt der visuellen Verankerung von Text in Videos eröffnet auch neue Möglichkeiten für die Anwendung des berechneten Skript-Wissen bei der automatischen Ereigniserkennung in Videos

    Local Philanthropy in Uganda: A Scan of the Regulatory Environment

    Get PDF
    This report is produced by CivSource – Africa as the first of two products from a research that was conducted to explore the landscape for philanthropy in Uganda through a case study of five districts, namely Kampala, Masaka, Mbarara, Gulu and Arua. It is a scan of the legal and policy environment for philanthropy in Uganda and addresses three objectives: Explore laws relevant to philanthropy in Uganda, as well as their implications; Describe the regulatory drivers of the constricted civil society space and; Identify experiences of local philanthropists with the regulatory environment

    The Cognitive Significance of Kant's Third Critique

    Get PDF
    This dissertation aims at forging an archetectonic link between Kant's first and third Critiques within a cognitive-semantic framework. My aim is to show how the major conceptual innovations of Kant’s third Critique can be plausibly understood in terms of the theoretical aims of the first, (Critique of Pure Reason). However, unlike other cognition-oriented approaches to Kant's third Critique, which take the point of contact between the first and third Critique's to be the first Critique's Transcendental Analytic, I link these two works via the first Critique's Transcendental Dialectic, specifically its discussions of the "ideas of pure reason." According to Kant, the “ideas of pure reason” (IPRs) — viz., the notions of self, world-whole, and God — are innate content-bearing entities representing three types of transempirical object, none of which are possible objects of cognition. However, although Kant denies that these rather unique content-bearers can be used for purposes of “speculative cognition,” he does think that they have an internal functional value for human cognitive systems. Although under my analysis of their functional value the IPRs subserve a highest-order aim which derives from theoretical reason — namely, to ground and optimize cognitive systematicity — their directive content in fact renders their implementation(thus their form of intentionality) more characteristic of practical reason. Kant’s positive account of reason’s “interest” in and use of the IPRs exhibits a kind of cognitive pragmatism. Of utmost concern to the cognitive-semantic enterprise, as I conceive it, is the development of (what might be called) a metaphysics of intentionality. A `metaphysics of intentionality', as I use the term, refers to a coherent set of postulative propositional cognitions (or, at any rate, content-bearing entities) implemented, first, for the sake of rationally explaining the phenomenological unity and object-directed character of our perceptual states and, second, to explain why the objects represented in such states are, or must be, law-governed and thus necessarily amenable to scientific investigation. On my view, the discussions in Kant’s third Critique nontrivially contribute to the development of a metaphysics of intentionality and thus to the larger cognitive-semantic enterprise of Kant's first Critique, and it is this link that lends Kant's third Critique a cognitive significance
    • …
    corecore