منابع مشابه
Choose Your Words Carefully
Good feature selection is essential for text classification to make it tractable for machine learning, and to improve classification performance. This study benchmarks the performance of twelve feature selection metrics across 229 text classification problems drawn from Reuters, OHSUMED, TREC, etc. using Support Vector Machines. The results are analyzed for various objectives. For best accuracy...
متن کاملGeneration Systems Should Choose Their Words
Almost all current natural language generation (NLG) systems, as contrasted with current NL understanding (NLU) systems, have one somewhat surprising property in common: Most current NLG systems don't use words at all. Such systems operate by incrementally specifying fragments of linguistic structure in a top-down fashion, typically inserting specific lexical items only when the frontier of the...
متن کاملSecurity or Privacy , Must We Choose ?
Hardly a day passes without reports of new threats in or about the Internet. Denial of service, worms, viruses, spam, and divulged credit card information highlight the major security threats. At the same time, we are bombarded by reports that privacy is at the greatest risk of all time, caused by the massive ability to store and search information and to trace activities across the Internet. I...
متن کاملWhat Future Will We Choose for Physics?
Science in the United States is in a time of pain and uncertainty. The pain is felt most acutely by young scientists, who are having great difficulty establishing their careers. The uncertainty about the duration and outcome of the current situation stems from its roots in ponderous events of recent history—the end of the cold war, industrial downsizing, government deficits and demographic tren...
متن کاملMultiple vaccines: how do we choose?
BACKGROUND As preventive medicine is a cornerstone of managed care, most health plans have traditionally featured automatic vaccine coverage routed through the medical benefit. However, with the advent of emerging vaccines, managed care stakeholders must revise decision-making processes and choose among multiple products targeting the same disease. OBJECTIVE To review the motivating forces be...
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ژورنال
عنوان ژورنال: Journal of Midwifery & Women's Health
سال: 2013
ISSN: 1526-9523,1542-2011
DOI: 10.1111/jmwh.12040