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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Current Result Document : 28 / 41 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) ´ë¿ë·® Ãß·ÐÀ» À§ÇÑ ºÐ»êȯ°æ¿¡¼­ÀÇ °¡Á¤±â¹ÝÁø¸®°ü¸®½Ã½ºÅÛ
¿µ¹®Á¦¸ñ(English Title) Distributed Assumption-Based Truth Maintenance System for Scalable Reasoning
ÀúÀÚ(Author) ¹ÙÆ®¼¿·½   ¹Ú¿µÅà  Batselem Jagvaral   Young-Tack Park  
¿ø¹®¼ö·Ïó(Citation) VOL 43 NO. 10 PP. 1115 ~ 1123 (2016. 10)
Çѱ۳»¿ë
(Korean Abstract)
°¡Á¤±â¹ÝÁø¸®°ü¸® ½Ã½ºÅÛ(ATMS)Àº Ãß·Ð ½Ã½ºÅÛÀÇ Ãß·Ð °úÁ¤À» ÀúÀåÇÏ°í ºñ´ÜÁ¶Ãß·ÐÀ» Áö¿ø
ÇÒ ¼ö ÀÖ´Â µµ±¸ÀÌ´Ù ¶ÇÇÑ ÀÇÁ¸±â¹Ý backtrackingÀ» Áö¿øÇϹǷΠ¸Å¿ì ³ÐÀº °ø°£ Ž»ö ¹®Á¦¸¦ ÇØ°á ÇÒ ¼ö ÀÖ´Â °­·ÂÇÑ µµ±¸ÀÌ´Ù. ¸ðµç Ãß·Ð °úÁ¤À» ±â·ÏÇÏ°í, ƯÁ¤ÇÑ ÄÁÅؽºÆ®¿¡¼­ Áö´ÉÇü½Ã½ºÅÛÀÇ Belief¸¦ ¸Å¿ì ºü¸£°Ô È®ÀÎÇÏ°í ºñ´ÜÁ¶ Ãß·Ð ¹®Á¦¿¡ ´ëÇÑ ÇØ°áÃ¥À» È¿À²ÀûÀ¸·Î Á¦°øÇÒ ¼ö ÀÖ°Ô ÇÑ´Ù. ±×·¯³ª ÃÖ±Ù µ¥ÀÌÅÍÀÇ ¾çÀÌ ¹æ´ëÇØÁö¸é¼­ ±âÁ¸ÀÇ ´ÜÀÏ ¸Ó½ÅÀ» »ç¿ëÇÏ´Â °æ¿ì ¹®Á¦ ÇØ°á ÇÁ·Î±×·¥ÀÇ ´ë¿ë·®ÀÇ Ã߷аúÁ¤À» ÀúÀåÇÏ´Â °ÍÀÌ ºÒ°¡´ÉÇÏ°Ô µÇ¾ú´Ù. ´ë¿ë·® µ¥ÀÌÅÍ¿¡ ´ëÇÑ ¹®Á¦ ÇØ°á °úÁ¤À» ±â·ÏÇÏ´Â °ÍÀº ¸¹Àº ¿¬»ê°ú ¸Þ¸ð¸® ¿À¹öÇìµå¸¦ ¾ß±âÇÑ´Ù. ÀÌ·¯ÇÑ ´ÜÁ¡À» ±Øº¹Çϱâ À§ÇØ º» ³í¹®¿¡¼­´Â Apache Spark ȯ°æ¿¡¼­ func-tional ¹× °´Ã¼ÁöÇâ ¹æ½Ä ±â¹ÝÀÇ Á¡ÁøÀû ÄÁÅؽºÆ® Ãß·ÐÀ» À¯ÁöÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù.. ÀÌ´Â °¡Á¤(Assumption)°ú À¯µµ°úÁ¤À» ºÐ»ê ȯ°æ¿¡ ÀúÀåÇϸç, ½ÇüȭµÈ ´ë¿ë·® µ¥ÀÌÅͼÂÀÇ º¯È­¸¦ È¿À²ÀûÀ¸·Î ¼öÁ¤ °¡´ÉÇÏ°Ô ÇÑ´Ù. ¶ÇÇÑ ATMSÀÇ Label, Environment¸¦ ºÐ»ê ó¸®ÇÏ¿© ´ë±Ô¸ðÀÇ Ãß·Ð °úÁ¤À» È¿°úÀûÀ¸·Î °ü¸®ÇÒ ¼ö ÀÖ´Â ¹æ¾ÈÀ» Á¦½ÃÇÏ°í ÀÖ´Ù. Á¦¾ÈÇÏ´Â ½Ã½ºÅÛÀÇ ¼º´ÉÀ» ÃøÁ¤Çϱâ À§ÇØ 5°³ÀÇ ³ëµå·Î ±¸¼ºµÈ Ŭ·¯½ºÅÍ¿¡¼­ LUBM µ¥ÀÌÅͼ¿¡ ´ëÇÑ OWL/RDFS Ãß·ÐÀ» ¼öÇàÇÏ°í, µ¥ÀÌÅÍÀÇ Ãß°¡, ¼³¸í, Á¦°Å¿¡ ´ëÇÑ ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. LUBM2000¿¡ ´ëÇÏ¿© Ãß·ÐÀ» ¼öÇàÇÑ °á°ú 80GBµ¥ÀÌÅÍ°¡ Ã߷еǾú°í, ATMS¿¡ Àû¿ëÇÏ¿© Ãß°¡, ¼³¸í, Á¦°Å¿¡ ´ëÇÏ¿© ¼öÃÊ ³»¿¡ ó¸®ÇÏ´Â ¼º´ÉÀ» º¸¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
Assumption-based truth maintenance system (ATMS) is a tool that maintains the reasoning process of inference engine. It also supports non-monotonic reasoning based on dependency-directed backtracking. Bookkeeping all the reasoning processes allows it to quickly check and retract beliefs and efficiently provide solutions for problems with large search space. However, the amount of data has been exponentially grown recently, making it impossible to use a single machine for solving large-scale problems. The maintaining process for solving such problems can lead to high computation cost due to large memory overhead. To overcome this drawback, this paper presents an approach towards incrementally maintaining the reasoning process of inference engine on cluster using Spark. It maintains data dependencies such as assumption, label, environment and justification on a cluster of machines in parallel and efficiently updates changes in a large amount of inferred datasets. We deployed the proposed ATMS on a cluster with 5 machines, conducted OWL/RDFS reasoning over University benchmark data (LUBM) and evaluated our system in terms of its performance and functionalities such as assertion, explanation and retraction. In our experiments, the proposed system performed the operations in a reasonably short period of time for over 80GB inferred LUBM2000 dataset.
Å°¿öµå(Keyword) ºÐ»ê °¡Á¤±â¹ÝÁø¸®°ü¸®½Ã½ºÅÛ   Ã߷п£Áø   ÄÄÇ»ÅÍ Å¬·¯½ºÅÍ   ¿ÂÅç·ÎÁö Ã߷Р  Spark   distributed ATMS   inference engine   cluster computing   ontology reasoning   spark  
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