01727nas a2200265   4500008004100000245003900041210003700080260000900117300001200126490000700138520098900145653001501134653001601149653001101165653001801176653001601194653001901210653003801229653001401267653001301281100001701294700001701311700001601328856011701344       2014                        eng d00aSoft-404 pages, a crawling problem0 aSoft404 pages a crawling problem  c2014  a73 - 920 v123 aDuring its traversal of the Web, crawler systems have to deal with multiple challenges. Some of them are related with detecting garbage content to avoid wasting resources processing it. Soft-404 pages are a type of garbage content generated when some web servers do not use the appropriate HTTP response code for death links making them to be incorrectly identified. Our analysis of the Web has revealed that 7.35% of web servers send a 200 HTTP code when a request for an unknown document is received, instead of a 404 code, which indicates that the document is not found. This paper presents a system called Soft404Detector, based on web content analysis to identify web pages that are Soft-404 pages. Our system uses a set of content-based heuristics and combines them with a C4.5 classifier. For testing purposes, we built a Soft-404 pages dataset. Our experiments indicate that our system is very effective, achieving a precision of 0.992 and a recall of 0.980 at Soft-404 pages.10aAlgorithms10aData mining10aDesign10aLink analysis10aPerformance10aSoft-404 error10aStatistical properties of the web10aWeb decay10aWeb spam1 aPrieto, V.M.1 aÁlvarez, M.1 aCacheda, F.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-84903202899&partnerID=40&md5=fa1bd1e59e4da6c413c6527da17e6e6b02441nas a2200241   4500008004100000245009100041210006900132260000900201300001200210490000600222520165400228653001501882653003101897653002701928653001501955653003001970653002102000100001502021700001602036700001502052700001502067856011702082       2011                        eng d00aEnhanced learning and educational management through online collaborative technologies0 aEnhanced learning and educational management through online coll  c2011  a33 - 420 v93 aMerging traditional ways of teaching with modern approaches as e-Learning, focused on online multimedia applications and technologies, developed in a collaborative manner, became a real necessity in order to enhance learning and educational management. In this paper we introduce our developed Education Management Tool (EDM), a visual, interactive and collaborative e-Learning solution, dedicated for optimizing the teaching, learning and testing processes in different Computer Science topics but also in any other scientifc feld. EDM allows geographically distributed students to contribute concurrently and collaboratively by working on the same application: designing, programming, debugging, testing and documenting. Besides that, EDM is free, easy to use, and helps to improve quality and performance in e-Learning, providing fexibility, extensibility and interactivity. The EDM Learning module allows defning lessons that consists of text-descriptions and media fles such as images, fash movies or video clips. We illustrate how third-party lessons can be integrated into EDM by presenting our interactive fash applications about digital logic circuits and algorithms, two fundamental topics of Computer Science. One of the latest development achievements consists in a Management module, with proper administration of marks, averages, lessons and student's presence at courses and laboratories, which allows generating, printing and exporting reports. Another issue, extremely necessary during collaborative writing and programming, is versioning, a mechanism which allows recovering any of the last ten versions of lessons or source codes.10aAlgorithms10aCollaborative technologies10aDigital logic circuits10ae-Learning10aEducation Management Tool10aWeb applications1 aFlorea, A.1 aGellert, A.1 aAnghel, T.1 aFlorea, D.  uhttp://www.scopus.com/inward/record.url?eid=2-s2.0-79960666591&partnerID=40&md5=5b162b4c94771ec8eac487c8670056dc