A substantial amount of recent work in natural language generation has focused on the generation of ‘‘one‐shot’’ referring expressions whose only aim is to identify a target referent. Dale and Reiter's Incremental Algorithm (IA) is often thought to be the best algorithm for maximizing the similarity to referring expressions produced by people. We test this hypothesis by eliciting referring expressions from human subjects and computing the similarity between the expressions elicited and the ones generated by algorithms. It turns out that (...) the success of the IA depends substantially on the ‘‘preference order’’ (PO) employed by the IA, particularly in complex domains. While some POs cause the IA to produce referring expressions that are very similar to expressions produced by human subjects, others cause the IA to perform worse than its main competitors; moreover, it turns out to be difficult to predict the success of a PO on the basis of existing psycholinguistic findings or frequencies in corpora. We also examine the computational complexity of the algorithms in question and argue that there are no compelling reasons for preferring the IA over some of its main competitors on these grounds. We conclude that future research on the generation of referring expressions should explore alternatives to the IA, focusing on algorithms, inspired by the Greedy Algorithm, which do not work with a fixed PO. (shrink)

This response discusses the experiment reported in Krahmer et al.’s Letter to the Editor of Cognitive Science. We observe that their results do not tell us whether the Incremental Algorithm is better or worse than its competitors, and we speculate about implications for reference in complex domains, and for learning from ‘‘normal” (i.e., non-semantically-balanced) corpora.

A substantial amount of recent work in natural language generation has focused on the generation of ‘‘one-shot’’ referring expressions whose only aim is to identify a target referent. Dale and Reiter's Incremental Algorithm (IA) is often thought to be the best algorithm for maximizing the similarity to referring expressions produced by people. We test this hypothesis by eliciting referring expressions from human subjects and computing the similarity between the expressions elicited and the ones generated by algorithms. It turns out that (...) the success of the IA depends substantially on the ‘‘preference order’’ (PO) employed by the IA, particularly in complex domains. While some POs cause the IA to produce referring expressions that are very similar to expressions produced by human subjects, others cause the IA to perform worse than its main competitors; moreover, it turns out to be difficult to predict the success of a PO on the basis of existing psycholinguistic findings or frequencies in corpora. We also examine the computational complexity of the algorithms in question and argue that there are no compelling reasons for preferring the IA over some of its main competitors on these grounds. We conclude that future research on the generation of referring expressions should explore alternatives to the IA, focusing on algorithms, inspired by the Greedy Algorithm, which do not work with a fixed PO. (shrink)

Cramer et al's proposal to view mental disorders as the outcome of network dynamics among symptoms obviates the need to invoke latent traits to explain co-occurrence of symptoms and syndromes. This commentary considers the consequences of such a network view for genetic association studies.

Dynamic Epistemic Logic This article tells the story of the rise of dynamic epistemic logic, which began with epistemic logic, the logic of knowledge, in the 1960s. Then, in the late 1980s, came dynamic epistemic logic, the logic of change of knowledge. Much of it was motivated by puzzles and paradoxes. The number … Continue reading Dynamic Epistemic Logic →.

Dynamic Epistemic Logic This article tells the story of the rise of dynamic epistemic logic, which began with epistemic logic, the logic of knowledge, in the 1960s. Then, in the late 1980s, came dynamic epistemic logic, the logic of change of knowledge. Much of it was motivated by puzzles and paradoxes. The number … Continue reading Dynamic Epistemic Logic →.

In order to overcome the unhealthy perspective of body-mind dualism and become capable of holding the “higher” and healthier perspective of body and mind as will to power, Nietzsche stresses that one must engage in a process of cultivation of the body. Such a practice of self-cultivation involves leaving behind incorporated illusory and life-denying perspectives and incorporating more “truthful” and affirmative perspectives on life. In this article, Nietzsche’s views on the body and its cultivation will be further explored and compared (...) with Japanese Buddhist thought on body, mind, and cultivation. In Japanese thought, the notion of shinjin-ichinyō (oneness of body and mind) was developed in order to overcome a dualistic approach to body and mind. The unity of body and mind plays an essential part in the philosophies of both Kūkai and Dōgen. Whereas in early Indian Buddhism, self-cultivation took place primarily through the mind (citta), in Japanese Buddhist practice the body, not the mind, is the primary locus as exemplified in Dōgen’s somatic practice of zazen. Although from the everyday perspective, body and mind are experienced as two separate things, a higher perspective is possible in which body-mind is experienced as a continually changing configuration of dharmas that doesn’t contain any “I.” Such a higher perspective is called “samadhic awareness” by Dōgen, in which “body and mind are cast off” (shinjin totsuraku). For both Nietzsche and Dōgen, their “philosophy am Leitfaden des Leibes” does not aim at discovering “truths” by means of introspection and thinking, but at increasing the body’s capacity for the incorporation of new and liberating perspectives. (shrink)

The modern critical approach to things hagiographical still wavers when it comes to taking leave of twelve lines of iambic invective, branded with wonderful delicacy of touch on the saintly foreheads of two Palestinian brothers, Theodore and Theophanes, the so-called “Graptoi”. Barry Baldwin, noting that C.A. Trypanis, unlike the great B. Bury and others, was inclined to disbelieve the story, could not help expressing the hope that it was true (An Anthology of Byzantine Poetry, Amsterdam 1985, pp. 142–3). It is (...) of course only one of the many stories concocted by iconodule propaganda. The central question has to be formulated in more general terms: how is history made? History here primarily in the sense of the construction of the past by the Byzantines themselves, was embodied in historical narratives moving between hagiography and historiography. Trying to lay bare the basis and elements of such constructs will always remain a major task of critical historical scholarship. (shrink)

We analyze the cognitive strategies underlying performance in the Number task, a Math game that requires both arithmetic fluency and mathematical creativity. In this game all elements in a set of numbers have to be used precisely once to create a target number with basic arithmetic operations. We argue that some instances of this game are NP complete, by showing its relation to the well-known Partition problem. We propose heuristics based on the distinction in forward and backward reasoning. The Number (...) Game is part of Math Garden, a popular online educational platform for practicing and monitoring math skills using innovations in computerized adaptive testing. These educational games generate enormous amounts of rich data on children's cognitive development. We found converging evidence for the use of forward proximity heuristics in the data of Math Garden, consisting of more than 20 million answers to 1,700 items. Item difficulties and the structure of correct answers were analyzed. (shrink)

To understand pre-Fregean theories of judgment and proposition, such as those found in Locke and the Port-Royal logic, it is important to distinguish between propositions in the modern sense and propositions in the pre-Fregean sense. By making this distinction it becomes clear that these pre-Fregean theories cannot be meant to solve the propositional attitude problem. Notwithstanding this fact, Locke and Arnauld are able to make a distinction between asserted and unasserted propositions (in their sense). The way Locke makes this distinction (...) turns out to be very different from the way it is made by Arnauld. (shrink)

Background Notwithstanding the need to produce evidence-based knowledge on medications for pregnant women, they remain underrepresented in clinical research. Sometimes they are excluded because of their supposed vulnerability, but there are no universally accepted criteria for considering pregnant women as vulnerable. Our aim was to explore whether and if so to what extent pregnant women are vulnerable as research subjects. Method We performed a conceptual and empirical analysis of vulnerability applied to pregnant women. Analysis A conceptual analysis supports Hurst's definition (...) of vulnerability. Consequently, we argue that pregnant women are vulnerable if they encounter an identifiably increased likelihood of incurring additional or greater wrong. According to the literature, this increased likelihood could exist of four alleged features for pregnant women's vulnerability: informed consent, susceptibility to coercion, higher exposure to risk due to lack of knowledge, vulnerability of the fetus. Discussion Testing the features against Hurst's definition demonstrates that they all concern the same issue: pregnant women are only vulnerable because a higher exposure to risk due to lack of scientific knowledge comprises an increased wrong. Research Ethics Committees have a responsibility to protect the vulnerable, but a higher exposure to risk due to lack of scientific knowledge is a much broader issue and also needs to be addressed by other stakeholders. Conclusions The only reason why pregnant women are potentially vulnerable is to the extent that they are increasingly exposed to higher risks due to a lack of scientific knowledge. Accordingly, the discussion can advance to the development of practical strategies to promote fair inclusion of pregnant women in clinical research. (shrink)

Over the past decades, both wild and domesticated insect pollinators are in dramatic decline, which puts at stake the existence of species, ecosystem resilience and global food security. Globally, 87 of major food crops depend on animal pollination. Together these account for 35 % of the world food production volume. Pollinator mediated crops are indispensable for essential micronutrients in the human diet. Many ornamental plants as well as crops for fibre, fodder, biofuels, timber and phytopharmaceuticals also depend on insect pollinators. (...) This article aims to map the current situation of pollinators worldwide, with a focus on the critical role of pollinators in the human food chain and ecosystem sustainability, their intrinsic and extrinsic value, as well as the causes of their declines and the interventions needed to conserve them, in order to develop an argument for the importance of conserving and restoring pollinator populations and diversity. The present pollinator crisis threatens global and local food security, can worsen the problems of hidden hunger, erodes ecosystem resilience, and can destabilise ecosystems that form our life support system. An integrated approach that simultaneously addresses the key drivers is needed. This includes creation and restoration of floral and nesting resources, a global phase out of prophylactic use of neonicotinoids and fipronil, improvement of test protocols in authorisation of agrochemicals, and restoration and maintenance of independence in regulatory science. The authors argue that an international treaty for global pollinator stewardship and pollinator ecosystem restoration should be initiated in order to systemically counteract the current crisis. (shrink)

Both the concept of a Darwinian tree of life (TOL) and the possibility of its accurate reconstruction have been much criticized. Criticisms mostly revolve around the extensive occurrence of lateral gene transfer (LGT), instances of uptake of complete organisms to become organelles (with the associated subsequent gene transfer to the nucleus), as well as the implications of more subtle aspects of the biological species concept. Here we argue that none of these criticisms are sufficient to abandon the valuable TOL concept (...) and the biological realities it captures. Especially important is the need to conceptually distinguish between organismal trees and gene trees, which necessitates incorporating insights of widely occurring LGT into modern evolutionary theory. We demonstrate that all criticisms, while based on important new findings, do not invalidate the TOL. After considering the implications of these new insights, we find that the contours of evolution are best represented by a TOL. (shrink)

Human cognition is unique in the way in which it relies on combinatorial (or compositional) structures. Language provides ample evidence for the existence of combinatorial structures, but they can also be found in visual cognition. To understand the neural basis of human cognition, it is therefore essential to understand how combinatorial structures can be instantiated in neural terms. In his recent book on the foundations of language, Jackendoff described four fundamental problems for a neural instantiation of combinatorial structures: the massiveness (...) of the binding problem, the problem of 2, the problem of variables, and the transformation of combinatorial structures from working memory to long-term memory. This paper aims to show that these problems can be solved by means of neural “blackboard” architectures. For this purpose, a neural blackboard architecture for sentence structure is presented. In this architecture, neural structures that encode for words are temporarily bound in a manner that preserves the structure of the sentence. It is shown that the architecture solves the four problems presented by Jackendoff. The ability of the architecture to instantiate sentence structures is illustrated with examples of sentence complexity observed in human language performance. Similarities exist between the architecture for sentence structure and blackboard architectures for combinatorial structures in visual cognition, derived from the structure of the visual cortex. These architectures are briefly discussed, together with an example of a combinatorial structure in which the blackboard architectures for language and vision are combined. In this way, the architecture for language is grounded in perception. Perspectives and potential developments of the architectures are discussed. Key Words: binding; blackboard architectures; combinatorial structure; compositionality; language; dynamic system; neurocognition; sentence complexity; sentence structure; working memory; variables; vision. (shrink)

Ernest Mandel theorised the capitalist world economy as an articulated system of capitalist, semi-capitalist and precapitalist relations of production, linked to each other by capitalist relations of exchange and domination by the capitalist world market. This seems to be an interesting starting point for an historically well-founded theory, building on and going beyond Marx's work, of the worldwide expansion of the capitalist mode of production from its origins to the present. In his attempt to formulate his theory, Mandel did not (...) succeed in resolving all difficulties, however. His main works – Marxist Economic Theory and Late Capitalism – show a number of dangling loose ends. The central question is whether these loose ends are merely technical difficulties or whether they reveal fatal flaws in the theory as a whole. In order to come a step closer to answering this question, a conference was organised in Amsterdam, November 2003. This introduction formulates the five, closely interrelated issues that were highlighted at this conference. (shrink)

In this article, we sketch a new approach to law and ethics. The traditional paradigm, exemplified in the debate on liberal moralism, becomes increasingly inadequate. Its basic assumptions are that there are clear moral norms of positive or critical morality, and that making statutory norms is an effective method to have citizens conform to those norms. However, for many ethical issues that are on the legislative agenda, e.g. with respect to bioethics and anti-discrimination law, the moral norms are controversial, vague (...) or still evolving. Moreover, law proves not to be a very effective instrument. Therefore, we need a new paradigm, both for descriptive and for normative analysis. This interactive paradigm, as a normative position, can be summarised in two theses. The process of legislation on ethical issues should be structured as a process of interaction between the legislature and society or relevant sectors of society, so that the development of new moral norms and the development of new legal norms may reinforce each other. And legislation on ethical issues should be designed in such a way that it is an effective form of communication which, moreover, facilitates an ongoing moral debate and an ongoing reflection on such issues, because this is the best method to ensure that the practice remains oriented to the ideals and values the law tries to realise. (shrink)

Les décisions politiques sur les risques environnementaux complexes font fréquemment intervenir des éléments scientifiques contestés. Il n’y a généralement pas de « faits » qui conduisent à une politique correcte unique. Les éléments de preuve qui sont intégrés dans les avis scientifiques destinés à une décision politique nécessitent une évaluation de leur qualité. En 2003, l’Agence néerlandaise d’évaluation environnementale a adopté une méthode standardisée, désignée sous le nom de « guide », dans le cadre de laquelle les principaux aspects de (...) la production et de l’utilisation des connaissances sont présentés grâce à une liste de contrôle visant à l’évaluation et à la communication des incertitudes. Dans cet article, nous présentons des résultats de l’application de ce guide à la controverse sur les risques des particules en suspension. La délibération active sur l’incertitude dans un contexte d’expertise entraîne un processus d’apprentissage commun entre les experts et les décideurs politiques, ce qui conduit à une meilleure prise de conscience du phénomène d’incertitude et de ses implications politiques.Policy decisions on complex environmental risks often involve disputed science. Typically, there are no “ facts” to support a single unequivocally correct policy. The evidence provided in scientific studies for policy-making decisions requires high-quality assessment. In 2003, the Netherlands Environmental Assessment Agency adopted a standardized method, referred to as “guidelines”, whereby key quality aspects of knowledge production and use are presented in the form of a checklist for uncertainty assessments and communication. In this article, we present the outcomes of applying the guidelines in controversies on the risks of ambient particulate matter. In the policy–advisory context, active deliberation on uncertainty produces a common learning process for advisors and policy makers, which leads to a deeper understanding and increased awareness of the phenomenon of uncertainty and its policy implications. (shrink)

This article provides an affirmative feminist reading of the philosophy of Henri Bergson by reading it through the work of Karen Barad. Adopting such a diffractive reading strategy enables feminist philosophy to move beyond discarding Bergson for his apparent phallocentrism. Feminist philosophy finds itself double bound when it critiques a philosophy for being phallocentric, because the setup of a master narrative comes into being with the critique. By negating a gender-blind or sexist philosophy, feminist philosophy only reaffirms its parameters, and (...) setting up a master narrative costs feminist philosophy its feminism. I thus propose and practice a different methodological starting point, one that capitalizes on “diffraction.” This article experiments with the affirmative phase in feminist philosophy prophesied by Elizabeth Grosz, among others. Working along the lines of the diffractive method, the article at the same time proposes a new reading of Bergson (as well as of Barad), a new, different metaphysics indeed, which can be specified as onto-epistemological or “new materialist.”. (shrink)

It is often argued that clinical research should not violate the Kantian principle that people must not be used merely as a means for the purposes of others. At first sight, the practice of clinical research itself, however, seems to violate precisely this principle: clinical research is often beneficial to future people rather than to participants; even if participants benefit, all things considered, they are exposed to discomforts which are absent both in regular care for their diseases and in other (...) areas of daily life. Therefore, in this paper we will consider whether people are used merely as a means by being enrolled in clinical research. On the basis of recent studies of Kantian scholars we will argue that clinical research is compatible with the Kantian principle if the conditions of possible consent and end-sharing have been met. Participants are not used merely as a means if they have sufficient reasons to consent to being enrolled in clinical research and can share the ends of the researchers who use them. Moreover, we will claim that even if people are used merely as a means by participating in clinical research, it may not always be morally wrong to use them in this way. (shrink)

Theoretical models for physician-patient communication in clinical practice are described in literature, but none of them seems adequate for solving the communication problem in clinical practice that emerges in case of factitious disorder. Theoretical models generally imply open communication and respect for the autonomy of the patient. In factitious disorder, the physician is confronted by lies and (self)destructive behaviour of the patient, who in one way or another tries to involve the physician in this behaviour. It is no longer controversial (...) that the physician should communicate his consideration of a factitious disorder without insistence that the patient accepts this diagnosis. However, the balance between patient autonomy and open communication on the one hand, and the preservation of the patient's health, physician integrity and of a constructive physician-patient relationship on the other is easily disrupted. In this article, an epistemological model is described to facilitate a positive outcome of confrontation in treatment of factitious disorder. Analysing the problem in terms of systems theory will help the physician to assess what information is appropriate to use in which phase of the patient's treatment, while preserving the physician-patient relationship. (shrink)

In pleas for the recognition of cultural minority rights, claims to educational authority often figure as concrete examples. The right to educational authority is said to be an exemplary minority right. This is striking, for of all minority rights this is one which is impossible to justify. Difficulties invovled in recent attempts to reconcile cultural minority rights with liberal democracy demonstrate that educational minority rights in particular cannot be justified without underestimating civic and liberal risks and ignoring the complicated nature (...) of the relationships between communities and ‘their’ children and between parents and ‘their’ children. (shrink)

The central thesis of this paper is that, for most issues of multiculturalism, regarding them as a problem of tolerance puts us on the wrong track because there are certain biases inherent in the principle of tolerance. These biases -- individualism, combined with a focus on religion and a focus on beliefs rather than on persons or practices -- can be regarded as distinctly Protestant. Extending the scope of tolerance may seem a solution but if we really want to counter (...) these biases, the principle of tolerance becomes so general that it loses any distinctive meaning. Therefore, we should accept the limited scope of tolerance and its biases. The principle of tolerance can still be useful for some problems where there is a clear and direct link to political or religious beliefs. Moreover, it should be cherished as a more general attitude or practice in Dutch society. For most problems of multiculturalism, however, we should appeal to broader theoretical frameworks that do justice to persons and practices. (shrink)

As humans, we frequently engage in mental time travel, reliving past experiences and imagining possible future events. This study examined whether similar factors affect the subjective experience associated with remembering the past and imagining the future. Participants mentally “re-experienced” or “pre-experienced” positive and negative events that differed in their temporal distance from the present , and then rated the phenomenal characteristics associated with their representations. For both past and future, representations of positive events were associated with a greater feeling of (...) re-experiencing than representations of negative events. In addition, representations of temporally close events contained more sensorial and contextual details, and generated a stronger feeling of re-experiencing than representations of temporally distant events. It is suggested that the way we both remember our past and imagine our future is constrained by our current goals. (shrink)

In this paper, we examine the relationship between Christian religiosity, attitudes towards corporate social responsibility, and CSR behavior of executives. We distinguish four types of CSR attitudes and five types of CSR behavior. Based on empirical research conducted among 473 Dutch executives, we find that CSR attitudes mediate the influence of religiosity on CSR behavior. Intrinsic religiosity positively affects the ethical CSR attitude and negatively affects the financial CSR attitude, whereas extrinsic religiosity stimulates the philanthropic CSR attitude. Financial, ethical, and (...) philanthropic CSR attitudes significantly affect some types of CSR behaviors. However, because religiosity has opposing effects on the three attitudes, the joint mediation effect of the three attitudes is negligible. Furthermore, we find a direct negative influence of intrinsic religiosity on diversity and a direct positive influence on charity. (shrink)

Hoewel in de laatste jaren sterk de nadruk is gelegd op de “autonomie” van het geschrevene ten opzichte van de schrijver en diens belevingswereld, wil deze auteur graag beginnen met een persoonlijke betuiging van erkentelijkheid. Een mens is toch wel zodanig verbonden met een geesteskind dat hij lang bij zich gedragen heeft, dat hij de aandacht en de grondigheid die uit de hiervoor geplaatste reacties spreekt, alleen maar in hoge mate kan waarderen. Hij heeft ze ervaren als toonbeelden van “ontmoeting”. (...) De verschillen tussen de drie reacties laten nog eens zien dat ontmoeting verre van monotoon is. Juist ook die verschillen vond ik leerzaam. Bij de opzet van mijn repliek wil ik aan de diversiteit zo goed mogelijk recht doen door de reacties stuk voor stuk te bespreken. Af en toe zal een “intertekstuele” opmerking wenselijk of onvermijdelijk zijn. Overigens vrees ik dat binnen het bestek van deze repliek niet voldoende ingegaan kan worden op alle vragen en tegenwerpingen. (shrink)

Pluralism is a sound strategy in classifying disciplines of biology. The relevance of a particular classification depends on various methodological issues, on the way in which the scientist's problems are specified, and on factual matters.

Fabi and Goldberg have helpfully shed some light on the wrongs perpetuated by the current funding architecture on research, sponsorship, and career development in the field of bioethics. The...

It has been claimed that the ability to remember the past and the ability to project oneself into the future are intimately related. We sought support for this proposition by examining whether individual differences in dimensions that have been shown to affect memory for past events similarly influence the experience of projecting oneself into the future. We found that individuals with a higher capacity for visual imagery experienced more visual and other sensory details both when remembering past events and when (...) imagining future events. In addition, individuals who habitually use suppression to regulate their emotions experienced fewer sensory, contextual, and emotional details when representing both past and future events, while the use of reappraisal had no effect on either kind of events. These findings are consistent with the view that mental time travel into the past and into the future relies on similar mechanisms. (shrink)

The notion of cognitive act is of importance for an epistemology that is apt for constructive type theory, and for epistemology in general. Instead of taking knowledge attributions as the primary use of the verb 'to know' that needs to be given an account of, and understanding a first-person knowledge claim as a special case of knowledge attribution, the account of knowledge that is given here understands first-person knowledge claims as the primary use of the verb 'to know'. This means (...) that a cognitive act is an act that counts as cognitive from a first-person point of view. The method of linguistic phenomenology is used to explain or elucidate our epistemic notions. One of the advantages of the theory is that an answer can be given to some of the problems in modern epistemology, such as the Gettier problem. (shrink)

Ethics support is called for to improve the quality of care in elderly institutions. Various forms of ethics support are presented, but the needs for ethics support remain unknown. Using a mixed-methods design, this article systematically investigates the specific needs for ethics support in elderly care. The findings of two surveys, two focus groups and 17 interviews demonstrate that the availability of ethics support is limited. There is a need for ethics support, albeit not unconditionally. Advice-based forms of ethics support (...) are less appropriate as they are removed from practice. Ethics support should be tailored to the often mundane and easily overlooked moral issues that arise in long-term care. Attention should also be given to the learning styles of nurses who favour experiential learning. Raising awareness and developing a climate of openness and dialogue are the most suitable ways to deal with the mundane moral issues in elderly care. (shrink)

William Whewell’s 19th century philosophy of science is sometimes glossed over as a footnote to Kant. There is however a key feature of Whewell’s account worth noting. This is his appeal to Aristotle’s form/matter hylomorphism as a metaphor to explain how mind and world merge in successful scientific inquiry. Whewell’s hylomorphism suggests a middle way between rationalism and empiricism reminiscent of experience pragmatists like Steven Levine’s view that mind and world are entwined in experience. I argue however that Levine does (...) not adequately explain exactly how mind and world entwine. He could nonetheless do so if he appealed to Whewell’s hylomorphic metaphor. We may prefer a reductive metaphysical explanation, but I suggest that pragmatists only have recourse to metaphor in this case. Both reductive and metaphorical explanations can enjoy great explanatory power if they exhibit a suitable measure of what I will call sematic distance. Semantic distance measures how close or how far apart explanandum and explanans are from each other in meaning. Metaphorical explanation - as evident in Whewell’s hylomorphism and as detailed via the notion of semantic distance - presents a valuable new explanatory tool to those who hold that mind and world are entwined sans recourse to metaphysics. (shrink)