In the curve fitting problem two conflicting desiderata, simplicity and goodness-of-fit, pull in opposite directions. To this problem, we propose a solution that strikes a balance between simplicity and goodness-of-fit. Using Bayes' theorem we argue that the notion of prior probability represents a measurement of simplicity of a theory, whereas the notion of likelihood represents the theory's goodness-of-fit. We justify the use of prior probability and show how to calculate the likelihood of a family of curves. We diagnose the relationship (...) between simplicity of a theory and its predictive accuracy. (shrink)

In the Book of Common Prayer’s Rite II version of the Eucharist, the congregation confesses, “we have sinned against you in thought, word, and deed”. According to this confession we wrong God not just by what we do and what we say, but also by what we think. The idea that we can wrong someone not just by what we do, but by what think or what we believe, is a natural one. It is the kind of wrong we feel (...) when those we love believe the worst about us. And it is one of the salient wrongs of racism and sexism. Yet it is puzzling to many philosophers how we could wrong one another by virtue of what we believe about them. This paper defends the idea that we can morally wrong one another by what we believe about them from two such puzzles. The first puzzle concerns whether we have the right sort of control over our beliefs for them to be subject to moral evaluation. And the second concerns whether moral wrongs would come into conflict with the distinctively epistemic standards that govern belief. Our answer to both puzzles is that the distinctively epistemic standards governing belief are not independent of moral considerations. This account of moral encroachment explains how epistemic norms governing belief are sensitive to the moral requirements governing belief. (shrink)

In this paper, I argue that morality might bear on belief in at least two conceptually distinct ways. The first is that morality might bear on belief by bearing on questions of justification. The claim that it does is the doctrine of moral encroachment. The second, is that morality might bear on belief given the central role belief plays in mediating and thereby constituting our relationships with one another. The claim that it does is the doctrine of doxastic wronging. Though (...) conceptually distinct, the two doctrines overlap in important ways. This paper provides clarification on the relationship between the two, providing reasons throughout that we should accept both. (shrink)

We care not only about how people treat us, but also what they believe of us. If I believe that you’re a bad tipper given your race, I’ve wronged you. But, what if you are a bad tipper? It is commonly argued that the way racist beliefs wrong is that the racist believer either misrepresents reality, organizes facts in a misleading way that distorts the truth, or engages in fallacious reasoning. In this paper, I present a case that challenges this (...) orthodoxy: the case of the supposedly rational racist. We live in a world that has been, and continues to be, structured by racist attitudes and institutions. As a result, the evidence might be stacked in favour of racist beliefs. But, if there are racist beliefs that reflect reality and are rationally justified, what could be wrong with them? Moreover, how do I wrong you by believing what I epistemically ought believe given the evidence? To address this challenge, we must recognize that there are not only epistemic norms governing belief, but moral ones as well. This view, however, is at odds with the assumption that moral obligation requires a kind of voluntary control that we lack with regard to our beliefs. This background assumption motivates many philosophers to try to explain away the appearance that beliefs can wrong by locating the wrong elsewhere, e.g., in an agent’s actions. Further, even accounts that accept the thesis that racist beliefs can wrong restrict the class of beliefs that wrong to beliefs that are either false or the result of hot irrationality, e.g., the racist belief is a result of ill-will. In this paper I argue that although the these accounts will capture many of the wrongs associated with racist beliefs, they will be only partial explanations because they cannot explain the wrong committed by the supposedly rational racist. The challenge posed by the supposedly rational racist concerns our epistemic practices in a non-ideal world. The world is an unjust place, and there may be many morally objectionable beliefs it justifies. To address this challenge, we must seriously consider the thesis people wrong others in virtue of what they believe about them, and not just in virtue of what they do. (shrink)

This paper is about an overlooked aspect—the cognitive or epistemic aspect—of the moral demand we place on one another to be treated well. We care not only how people act towards us and what they say of us, but also what they believe of us. That we can feel hurt by what others believe of us suggests both that beliefs can wrong and that there is something we epistemically owe to each other. This proposal, however, surprises many theorists who claim (...) it lacks both intuitive and theoretical support. This paper argues that the proposal has intuitive support and is not at odds with much contemporary theorizing about what we owe to each other. (shrink)

Historical patterns of discrimination seem to present us with conflicts between what morality requires and what we epistemically ought to believe. I will argue that these cases lend support to the following nagging suspicion: that the epistemic standards governing belief are not independent of moral considerations. We can resolve these seeming conflicts by adopting a framework wherein standards of evidence for our beliefs to count as justified can shift according to the moral stakes. On this account, believing a paradigmatically racist (...) belief reflects a failure to not only attend to the epistemic risk of being wrong, but also a failure to attend to the distinctively moral risk of wronging others given what we believe. (shrink)

We care what people think of us. The thesis that beliefs wrong, although compelling, can sound ridiculous. The norms that properly govern belief are plausibly epistemic norms such as truth, accuracy, and evidence. Moral and prudential norms seem to play no role in settling the question of whether to believe p, and they are irrelevant to answering the question of what you should believe. This leaves us with the question: can we wrong one another by virtue of what we believe (...) about each other? Can beliefs wrong? In this introduction, I present a brief summary of the articles that make up this special issue. The aim is to direct readers to open avenues for future research by highlighting questions and challenges that are far from being settled. These papers shouldn’t be taken as the last word on the subject. Rather, they mark the beginning of a serious exploration into a set of questions that concern the morality of belief, i.e., doxastic morality. (shrink)

Morality bears on what we should forget. Some aspects of our identity are meant to be forgotten and there is a distinctive harm that accompanies the permanence of some content about us, content that prompts a duty to forget. To make the case that forgetting is an integral part of our moral duties to others, the paper proceeds as follows. In §1, I make the case that forgetting is morally evaluable and I survey three kinds of forgetting: no-trace forgetting, archival (...) forgetting, and siloing. In §2, I turn to how we practice these forms of forgetting in our everyday lives and the goods these practices facilitate by drawing on examples ranging from the expunging of juvenile arrest records to the right to privacy. In §3, I turn to how my account can help us both recognize and address a heretofore neglected source of harm caused by technology and big data. In §4, I end by addressing the concern that we lack control over forgetting and thus can't be required to forget. I argue this challenge can be answered, but there’s a harder challenge that can’t. Forgetting is under threat. To address this challenge and preserve forgetting, we must change the world. (shrink)

Philosophical inquiry strives to be the unencumbered exploration of ideas. That is, unlike scientific research which is subject to ethical oversight, it is commonly thought that it would either be inappropriate, or that it would undermine what philosophy fundamentally is, if philosophical research were subject to similar ethical oversight. Against this, I argue that philosophy is in need of a reckoning. Philosophical inquiry is a morally hazardous practice with its own risks. There are risks present in the methods we employ, (...) risks inherent in the content of the views under consideration, and risks to the subjects of our inquiry. Likely, there are more risks still. However, by starting with the identification of these three risks we can demonstrate not only why an ethics of practice is needed but also which avenues are the most promising for developing an ethics for philosophical practice. Although we might be in the business of asking questions, we do not absolve ourselves of responsibility for the risks that inquiry incurs. (shrink)

A challenge we face in a world that has been shaped by, and continues to be shaped by, racist attitudes and institutions is that the evidence is often stacked in favor of racist beliefs. As a result, we may find ourselves facing the following conflict: what if the evidence we have supports something we morally shouldn’t believe? For example, it is morally wrong to assume, solely on the basis of someone’s skin color, that they’re a staff member. But, what if (...) you’re in a context where, because of historical patterns of discrimination, someone’s skin color is a very good indicator that they’re a staff member? When this sort of normative conflict looms, a conflict between moral considerations on the one hand and what you epistemically ought to believe given the evidence on the other, what should we do? It might be unfair to assume that they’re a staff member, but to ignore the evidence would mean risking inaccurate beliefs. Some, notably Tamar Gendler (2011), have suggested that we simply face a tragic irresolvable dilemma. In this chapter, I consider how these cases of conflict arise and I canvass the viability of suggested resolutions of the conflict. In the end, I argue that there’s actually no conflict here. Moral considerations can change how we epistemically should respond to the evidence. (shrink)

This chapter asks two questions about the ethics of expectations: one about the nature of expectations, and one about the wrongs of expectations. On the first question, expectations involve a rich constellation of attitudes ranging from beliefs to also include imaginings, hopes, fears, and dreams. As a result, sometimes expectations act like predictions, like your expectation of rain tomorrow, sometimes prescriptions, like the expectation that your students will do the reading, sometimes like proleptic reasons like the hope that your mentee (...) will flourish, and sometimes expectations are peremptory in that they carry the force of moral law. Turning to the second question, given the multiple roles played by expectations it shouldn’t be surprising that there are also multiple ways expectations can be wrong to hold. Sometimes they wrong as beliefs do, e.g., doxastic wronging, and sometimes they result in alienation because of who holds that expectation of us. The upshot of this chapter is that getting clear on these potential ways expectations can wrong not only delivers an ethics of expectations that mirrors familiar discussions of the ethics of belief, but an ethics of expectations further opens the door for taking seriously an ethics of mental attitudes more generally. (shrink)

You shouldn’t have done it. But you did. Against your better judgment you scrolled to the end of an article concerning the state of race relations in America and you are now reading the comments. Amongst the slurs, the get-rich-quick schemes, and the threats of physical violence, there is one comment that catches your eye. Spencer argues that although it might be “unpopular” or “politically incorrect” to say this, the evidence supports believing that the black diner in his section will (...) tip poorly. He insists that the facts don’t lie. The facts aren’t racist. In denying his claim and in believing otherwise, it is you who engages in wishful thinking. It is you who believes against the evidence. You, not Spencer, are epistemically irrational. -/- My dissertation gives an account of the moral-epistemic norms governing belief that will help us answer Spencer and the challenge he poses. We live in a society that has been shaped by racist attitudes and institutions. Given the effects of structural racism, Spencer’s belief could have considerable evidential support. Spencer notes that it might make him unpopular, but he cares about the truth and he is willing to believe the unpopular thing. But, Spencer’s belief seems racist. Spencer asks, however, how could his belief be racist if his beliefs reflect reality and are rationally justified? Moreover, how could he wrong anyone by believing what he epistemically ought to believe given the evidence? In answer, I argue that beliefs can wrong. (shrink)

In this paper, I revisit the question of how and in what sense can individuals comprising a group be held responsible for morally reprehensible behaviour by that group. The question is tackled by posing a counterfactual: what would happen if selfish individuals became moral creatures? A game called the Samaritan’s Curse is developed, which sheds light on the dilemma of group moral responsibility, and raises new questions concerning ‘conferred morality’ and self-fulfilling morals, and also forces us to question some implicit (...) assumptions of game-theory. (shrink)

If you’re familiar with Tolkien’s The Hobbit I don’t need to tell you that Mirkwood is a dangerous place. As bad as we might feel for Thorin and company as they try to navigate the forest and fall prey to its traps, we should feel worse for ourselves. Our world is also dangerous and difficult, but in a different way. Although it’s some comfort that the spiders of our world are smaller, it is easier to travel through Mirkwood than it (...) is to know what to believe. At least when it comes to navigating Mirkwood the directions are clear. (shrink)

Much of economics is built on the assumption that individuals are driven by self-interest and economic development is an outcome of the free play of such individuals. On the few occasions that the existence of altruism is recognized in economics, the tendency is to build this from the axiom of individual selfishness. The aim of this paper is to break from this tradition and to treat as a primitive that individuals are endowed with the ‘cooperative spirit’, which allows them to (...) work in their collective interest, even when that may not be in their self-interest. The paper tracks the interface between altruism and group identity. By using the basic structure of a Prisoner's Dilemma game among randomly picked individuals and building into it assumptions of general or in-group altruism, the paper demonstrates how our selfish rationality interacts with our innate sense of cooperation. The model is used to outline circumstances under which cooperation will occur and circumstances where it will break down. The paper also studies how sub-groups of a society can form cooperative blocks, whether to simply do better for themselves or exploit others. (shrink)

This two volume set of essays, written in honor of Amartya Sen, covers the range of contributions that Sen has made to knowledge. They are written by some of the world's leading economists, philosophers and social scientists, and address topics such as ethics, welfare economics, poverty, gender, human development, society, and politics.

In this paper we shall try to understand what it is to beg the question, and since begging the question is generally believed to be linked with circularity, we shall also explore this relationship. Finally, we shall consider whether certain forms of valid argument can go through smoothly in anepistemio context without begging the question. We shall consider, especially, the claims of the disjunctive syllogism in this regard.

One of the central tenets of mainstream economics is Adam Smith's proposition that, given certain conditions, self-interested behavior by individuals leads them to the social good, almost as if orchestrated by an invisible hand. This deep insight has, over the past two centuries, been taken out of context, contorted, and used as the cornerstone of free-market orthodoxy. In Beyond the Invisible Hand, Kaushik Basu argues that mainstream economics and its conservative popularizers have misrepresented Smith's insight and hampered our understanding (...) of how economies function, why some economies fail and some succeed, and what the nature and role of state intervention might be. Comparing this view of the invisible hand with the vision described by Kafka--in which individuals pursuing their atomistic interests, devoid of moral compunction, end up creating a world that is mean and miserable--Basu argues for collective action and the need to shift our focus from the efficient society to one that is also fair. Using analytic tools from mainstream economics, the book challenges some of the precepts and propositions of mainstream economics. It maintains that, by ignoring the role of culture and custom, traditional economics promotes the view that the current system is the only viable one, thereby serving the interests of those who do well by this system. Beyond the Invisible Hand challenges readers to fundamentally rethink the assumptions underlying modern economic thought and proves that a more equitable society is both possible and sustainable, and hence worth striving for. By scrutinizing Adam Smith's theory, this impassioned critique of contemporary mainstream economics debunks traditional beliefs regarding best economic practices, self-interest, and the social good. (shrink)

Nearly a million Indian women lack access to safe and dignified abortion services from public healthcare facilities and instead opt to induce abortions by themselves or with the help from unskilled and unauthorized practitioners. Unsafe abortions account for an estimated 9% of all maternal deaths in India despite the legalization of abortion on all grounds since 1971 via the MTP Act. However, the Act technically does not make any provision for abortion based on a woman’s request alone, subjecting her decision (...) to the approval of her healthcare provider, limiting reproductive autonomy. Moreover, the problem of female feticide through sex‐selective abortions has also contributed to a conflicting public agenda that prioritizes preventing the former over allowing women access to abortion services for other reasons. Women who are socio‐economically, culturally, and educationally vulnerable and minors may experience further abortion related stigmatization. These ethico‐legal considerations highlight the need for transition from a provider‐centered to a woman‐centered abortion service model. (shrink)

This paper attempts to argue for the theory-ladenness of evidence. It does so by employing and analysing an episode from the history of eighteenth century chemistry. It delineates attempts by Joseph Priestley and Antoine Lavoisier to construct entirely different kinds of evidence for and against a particular hypothesis from a set of agreed upon observations or data. Based on an augmented version of a distinction, drawn by J. Bogen and J. Woodward, between data and phenomena it is shown that the (...) role of theoretical auxiliary assumptions is very important in constructing evidence for a theory from observation or data. In revolutionary situations, rival groups hold radically different theories and theoretical auxiliary assumptions. These are employed to construct very different evidence from the agreed upon set of observations or data. Hence, theory resolution becomes difficult. It is argued that evidence construction is a multi-layered exercise and can be disputed at any level. What counts as unproblematic observation or data at one level may become problematic at another level. The contingency of these constructions and the problematic nature of evidence are shown to be partially dependent upon the scientific knowledge that the scientific community possesses.Author Keywords: Theory-ladenness of evidence; Eighteenth century chemical philosophy; Construction of evidence; Observation/data; Theory resolution. (shrink)

In this paper I explore three challenges to the morality of belief. First, whether we have the necessary control over our beliefs to be held responsible for them, i.e., the challenge of doxastic involuntarism. Second, the question of whether belief is really the attitude that we care about in the cases used to motivate the morality of belief. Third, whether attitudes weaker than belief, such as credence, can wrong, I then end by turning to how answers to the previous challenges (...) suggest a way of extending the morality of belief to encompass a way of thinking of the moral mind more generally. (shrink)

The powerful role that teachers can play in our development is the focus Binyamin, Jayusi, and Tamir’s chapter in this volume. They argue that teachers, in particular teachers that don’t share the same background as their students, can help counter the increasing polarization that characterizes our current era. In these critical notes I raise three challenges to their proposal. First, by exploring the mechanisms of polarization I demonstrate that polarization is not a problem unique to thick diversity or thick multiculturalism. (...) Second, the central premise of the authors’ proposal rests on the ability of greater contact to reduce prejudice. The contact hypothesis, however, has numerous backlash effects and unintended consequences that can increase prejudice rather than reduce prejudice. These backlash effects and unintended consequences raise serious doubts for the success of placing minority teachers in majority classrooms to reduce prejudice. Third, I raise concerns about how the proposal tokenizes minority teachers, the use of instrumental rationales for diversity, and the politics of deference and being-in-the-room privilege that also go unaddressed in their proposal. (shrink)

It is no surprise that we should be careful when it comes to what we believe. Believing false things can be costly. The morality of belief, also known as doxastic wronging, takes things a step further by suggesting that certain beliefs can not only be costly, they can also wrong. This article surveys some accounts of how this could be so. That is, how beliefs wrong.

Past decades have witnessed the growing success of branding as a corporate activity as well as a rise in anti-brand activism. While appearing to be contradictory, both trends have emerged from common sources – the transition from industrial to post-industrial society, and the advent of globalization – the examination of which might lead to a socially grounded understanding of why brand success in the future is likely to demand more than superior product performance, placing increasing demand on corporations with regard (...) to a broader envelop of socially responsible behavior. Directions for strategic and managerial options are suggested. (shrink)

In this paper, we study two companions of a logic, viz., the left variable inclusion companion and the restricted rules companion, their nature and interrelations, especially in connection with paraconsistency. A sufficient condition for the two companions to coincide has also been proved. Two new logical systems—intuitionistic paraconsistent weak Kleene logic (IPWK) and paraconsistent pre-rough logic (PPRL)—are presented here as examples of logics of left variable inclusion. IPWK is the left variable inclusion companion of intuitionistic propositional logic and is also (...) the restricted rules companion of it. PPRL, on the other hand, is the left variable inclusion companion of pre-rough logic but differs from the restricted rules companion of it. We have discussed algebraic semantics for these logics in terms of Płonka sums. This amounts to introducing a contaminating truth value, intended to denote a state of indeterminacy. (shrink)

Marriage distance is an important variable in human genetics. The distribution of marriage distance has been studied among the Santals, a large agricultural tribe of eastern India, in the neighbourhood of Giridih, Bihar. A Type III Pearsonian curve was fitted to the observed distribution; the fit was found to be good. Possible explanations have been suggested for the distribution pattern among the Santals and for the difference with respect to this pattern between the Santals and other populations.

If we’re the kind of people who care both about not being racist, and also about basing our beliefs on the evidence that we have, then the world presents us with a challenge. The world is pretty racist. It shouldn’t be surprising then that sometimes it seems as if the evidence is stacked in favour of some racist belief. For example, it’s racist to assume that someone’s a staff member on the basis of his skin colour. But what if it’s (...) the case that, because of historical patterns of discrimination, the members of staff with whom you interact are predominantly of one race? When the late John Hope Franklin, professor of history at Duke University in North Carolina, hosted a dinner party at his private club in Washington, DC in 1995, he was mistaken as a member of staff. Did the woman who did so do something wrong? Yes. It was indeed racist of her, even though Franklin was, since 1962, that club’s first black member. (shrink)

Social Construction of Technology (SCOT) formed a key component of the ‘new sociology of technology’, which emerged in mid-1980s and heralded the entry of social constructivist theory into the domain of technology from science. A large number of empirical case studies were generated using SCOT methodology in the following three decades, encompassing a wide range of technological artefacts or systems. This essay reviews the trajectory of SCOT as a distinct intellectual tradition in technology studies. First, an attempt is made to (...) appraise and classify the main strands of criticisms against SCOT that have come up over the years. Second, this essay discusses several new conceptual heuristics, which were successively incorporated by the original authors of SCOT, along with the concomitant broadening of analytical units and research questions. We conclude that, while SCOT demonstrated its resilience as a dynamic scholarly tradition and constantly adapted itself to address criticisms through the incorporation of new conceptual tools, the consequent methodological transition had profound implications for SCOT as a theory, somewhat undermining its original agenda and methodological distinctiveness in social studies of technology. (shrink)

The paediatric intensive care unit (PICU) is a high-stress environment for parents, families and health care professionals (HCPs) alike. Family members experiencing stress or grief related to the admission of their sick child may at times exhibit challenging behaviours; these exist on a continuum from those that are anticipated in context, through to unacceptable aggression. Rare, extreme behaviours include threats, verbal or even physical abuse. Both extreme and recurrent ‘subthreshold’ behaviours can cause significant staff distress, impede optimal clinical care and (...) compromise patient outcomes. The unique PICU environment and model of care may magnify stressors for both families and staff and the family-centred approach to care (FCC) central to paediatric practice, may also contribute to contextual challenges. Pervasive conflict in paediatric healthcare is harmful for patients, families, PICU staff and the institution more broadly. We propose that caring for children and caring for staff are inseparable goals and the latter has been inadvertently but detrimentally deprioritised as FCC has become a primary focus. A transparent and graded hierarchy of responses to variable levels of challenging behaviour is necessary to ensure that families are supported, while HCPs remain protected in the workplace. This requires establishing firm limits supported by all teams and levels of the institution. As such, we aim to identify and clarify the context and impact of challenging parent and family behaviour in the PICU and to offer potential, proactive mitigation strategies, based on reflections and stakeholder discussion following recent clinical challenges and experiences in our unit. (shrink)

The problem of fake news and the spread of misinformation has garnered a lot of attention in recent years. The incentives and norms that give rise to the problem, however, are not unique to journalism. Insofar as academics and journalists are working towards the same goal, i.e., publication, they are both under pressures that pervert. This chapter has two aims. First, to integrate conversations in philosophy of science, epistemology, and metaphilosophy to draw out the publishing incentives that promote analogous problems (...) of fake news and misinformation in academic research communities more broadly. Second, to argue for a (partial) solution. This chapter argues that research communities benefit when authors believe what they argue for in print and it warns against attempts to loosen our publication norms to permit publishing without belief. (shrink)

Conventions and leaders are believed to be the two pillars of justice and order in society. This paper evaluates this proposition and draws attention to two intriguing ways in which these pillars can malfunction. The argument is constructed by creating two new games, Greta’s Dilemma and the Incarceration Game. An awareness of these problems can help us use our ‘moral intention’ to reexamine our own collective behavior and to design prior conventions, which limit the power of the leader.

Increasing evidence indicates that extracellular vesicles (EVs) secreted from tumor cells play a key role in the overall progression of the disease state. EVs such as exosomes are secreted by a wide variety of cells and transport a varied population of proteins, lipids, DNA, and RNA species within the body. Gliomas constitute a significant proportion of all primary brain tumors and majority of brain malignancies. Glioblastoma multiforme (GBM) represents grade IV glioma and is associated with very poor prognosis despite the (...) cumulative advances in diagnostic procedures and treatment strategies. Here, the authors describe the progress in understanding the role of EVs, especially exosomes, in overall glioma progression, and how new research is unraveling the utilities of exosomes in glioma diagnostics and development of next‐generation therapeutic systems. Finally, based on an understanding of the latest scientific literature, a model for the possible working of therapeutic exosomes in glioma treatment is proposed. (shrink)

This commentary on the target article underscores the need to examine the imagined trajectory of Place Spirituality, where person attachment and attachment to place through prior exposure are minimum or absent. Examples of such place attachment through sheer spiritual imagination or belief have been provided. It is further argued that while Place Spirituality may be complex, the exact developmental trajectory of Place Spirituality has not been investigated and requires future research attention. The model of transitional phenomenon and transitional space by (...) Donald Winnicott has been presented as a possible explanatory model. (shrink)

A novel piecewise water flow technique for text line extraction from multi-skewed document images of handwritten text of different scripts is presented here. The basic water flow technique assumes that the hypothetical water flows from both left and right sides of the image frame. This flow of water fills up the gaps between consecutive objects but faces obstruction if any object lies in the path of the flow. All unwetted regions in the document image are then labeled distinctly to extract (...) the text lines. However, the technique fails when two neighboring text lines touch each other, as water gets obstructed by the touching segment. To get rid of this difficulty, we have modified the basic water flow technique by iteratively applying the same over the vertically segmented document images. The main purpose of this vertical segmentation is to localize the text line segment where two text lines get joined. These segments are then horizontally fragmented, and each fragment is placed suitably to the text line in which it actually belongs to. This way, the probable data loss during isolation of the touching text line segment is minimized. Both the techniques have been tested on three different databases, viz., CMATERdb 1.1.1, CMATERdb 1.1.2, and ICDAR2009 handwritten segmentation contest pages, respectively. The test results show that the present technique outperforms the basic one for all three databases. (shrink)