In typical classification tasks, we seek a function which assigns a label to a single object. Kernel-based approaches, such as support vector machines (SVMs), which maximize the margin of confidence of the classifier, are the method of choice for many such tasks. Their popularity stems both from

of twelve feature selection methods (e.g. Information Gain) evaluated on a benchmark of 229 text classification problem instances that were gathered from Reuters, TREC, OHSUMED, etc. The results are analyzed from multiple goal perspectives—accuracy, F-measure, precision, and recall—since each is appropriate

some evidence that protection increases firms ’ price-cost margins and reduces average efficiency levels at the margin. Finally, although the econometric evidence on technology diffusion in LDCs is limited, it does suggest that protecting “learning ” industries is unlikely to foster productivity growth

as markets grow. Moreover, if a portfolio manager’s marginal cost for yielding below-market returns exceeds the marginal gain for above-market returns, there is a range of optimal portfolios in which all investors imitate arbitrary market portfolios and this range widens as the market grows. Numerical

welfare inequality across countries. The paper derives valuation formulas for infra-marginal changes in longevity and computes a “full ” growth rate that incorporates the gains in health experienced by 96 countries for the period between 1960 and 2000. Incorporating longevity gains changes traditional

We propose a low overhead, on-line memory monitoring scheme utilizing a set of novel hardware counters. The counters indicate the marginal gain in cache hits as the size of the cache is increased, which gives the cache miss-rate as a function of cache size. Using the counters, we describe a scheme

Trade and gains from trade at the extensive and

publications. SULFUR DIOXIDE CONTROL BY ELECTRIC UTILITIES: WHAT ARE THE GAINS FROM TRADE? Title IV of the 1990 Clean Air Act Amendments (CAAA) established a market for transferable sulfur dioxide (SO 2) emission allowances among electric utilities. This market offers firms facing high marginal abatement costs

that subject to certain restrictions, the guaranteed-cost gain results in "non-fragile" system control: an infinite increasing gain margin, a decreasing gain margin of 1=2, and phase margins of sixty degrees for each system. The converse is also considered: given a guaranteed-cost gain, the set

This paper focuses on the PID controller design based on the gain and phase margin (GPM) specifications for a given signalinput -signal-output plant. The basic ideas, techniques, and results are presented in language and notation familiar. Since the definitions of GPM equations are highly