The Warped Geometry of Visual Space Near a Line Assessed Using a Hyperacuity Displacement Task

Badcock & Westheimer (Spatial Vision, 1(1), 3-11, 1985) showed that a thin vertical line induces nearby zones of attraction and repulsion; this study extends those results by more closely examining the horizontal and vertical extents of the repulsion zone and by using an illusory contour to induce repulsion. The experimental paradigm measures perceived hyperacute displacements of a thin vertical line 10' tall. Halfway through the stimulus, the bright target line was shifted and a lower contrast flanking line added. Conditions equivalent to Badcock & Westheimer replicate their results. Repulsion is observed horizontally from separations of 5' to at least 30' and becomes minimal at 50'. Repulsion also decreases with increasing vertical separation. Another experiment shows that symmetry is not required for repulsion when the flanking line is split into two vertically separated fragments; one fragment alone causes the same amount of repulsion as both fragments together. Finally, it is shown that a flanking contour formed by the grating illusion causes repulsion of the target line in the same manner as a target line defined by luminance.British Petroleum (89A-1204); Defense Advanced Research Projects Agency (90-0083); Air Force Office of Scientific Research (90-0175

Automated construction of a hierarchy of self-organized neural network classifiers

This paper documents an effort to design and implement a neural network-based, automatic classification system which dynamically constructs and trains a decision tree. The system is a combination of neural network and decision tree technology. The decision tree is constructed to partition a large classification problem into smaller problems. The neural network modules then solve these smaller problems. We used a variant of the Fuzzy ARTMAP neural network which can be trained much more quickly than traditional neural networks. The research extends the concept of self-organization from within the neural network to the overall structure of the dynamically constructed decision hierarchy. The primary advantage is avoidance of manual tedium and subjective bias in constructing decision hierarchies. Additionally, removing the need for manual construction of the hierarchy opens up a large class of potential classification applications. When tested on data from real-world images, the automatically generated hierarchies performed slightly better than an intuitive (handbuilt) hierarchy. Because the neural networks at the nodes of the decision hierarchy are solving smaller problems, generalization performance can really be improved if the number of features used to solve these problems is reduced. Algorithms for automatically selecting which features to use for each individual classification module were also implemented. We were able to achieve the same level of performance as in previous manual efforts, but in an efficient, automatic manner. The technology developed has great potential in a number of commercial areas, including data mining, pattern recognition, and intelligent interfaces for personal computer applications. Sample applications include: fraud detection, bankruptcy prediction, data mining agent, scalable object recognition system, email agent, resource librarian agent, and a decision aid agent

Мовна ситуація в українських засобах масової комунікації в оцінках громадян (за результатами масового опитування)

У статті проаналізовано результати масового опитування щодо мовної ситуації в українських ЗМК. З’ясовано, що диференціація преференцій українців у сфері ЗМІ й культури обумовлена мовою повсякденного спілкування, рідною мовою та регіоном проживання, найменшою мірою віком, освітою та типом населеного пункту

1995 The Analysis

https://jdc.jefferson.edu/analysis/1022/thumbnail.jp

To the End:Exposing the Absolute

This article reconstructs Badiou’s oeuvre from the vantage point of the last volume of his Being and Event trilogy. It determines the perspective and task of The Immanence of Truths and demonstrates in what way an “absolute ontology” is the result of an act of forcing that serves as the measure for a truth’s truthness. This allows to argue that Badiou’s is and always was a philosophy of freedom.Pričujoči prispevek rekonstruira celotno Badioujevo delo, izhajajoč iz zadnjega dela trilogije Biti in dogodka. Opredeli perspektivo in nalogo Imanence resnic in pokaže, kako je lahko »absolutna ontologija« rezultat dejanja izsiljenja, ki je hkrati mera za resničnost resnice. Na tej podlagi lahko nato zatrdimo, da je Badioujeva filozofija, kar je vedno tudi bila, filozofija svobode