Israel Gold

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We introduce the notion of self-adapting concurrency control algorithms --- concurrency control algorithms that consist of several rw and several ww synchronization techniques, and employ combinations of the techniques in a manner that attains a performance objective. We Consider synchronization techniques that use locking and certification. A general proof(More)
h the pri~ute w&qxzce model of concurrency control the transaction management component of a database management system maintains a privute tisorkspuce for each transaction. Data items accessed by a transaction, regardless of the access mode, are cached in the workspace. At transaction commit time, its updates are made permananet in the database. In this(More)
This paper addresses two basic issues. First, the feasibility of the model is exhibited by introducing a relatively straightforward and efficient parallel commti phase algorithm in which no I/O operations are associated with a critical section of the TM. Second, by simulation experiments, a concurrency control method in which readers use certification(More)
Air-to-air combat between two aggressive aircraft , both equipped with medium-range guided missiles, is .a key element of future air warfare. This dynamic coni lict can be viewed as an interaction of a twotarget diiferential game (between the air-craft) and two independent missileaircraft pursuit-evasion games. The information structure is, however, rather(More)
We describe an implemented system that learns to recognize human faces under varying pose and illumination conditions. The system relies on symmetry operations to detect the eyes and the mouth in a face image, uses the locations of these features to normalize the appearance of the face, performs simple but e ective dimensionality reduction by a convolution(More)
Ross argues that the location problem for color-the problem of how it is represented as occupying a particular location in space-constitutes an objection to color subjectivism. There are two ways in which the location problem can be interpreted. First, it can be read as a why-question about the relation of visual experience to the environment represented:(More)
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