÷ƒ’À;è TeX output 1994.05.24:1405‹ÿÿÿÿ ‹ú- ıW‘ì Šn ı‘ì‘og‚ó'ò"V ó3 cmbx10ÒInstitute–2of“Informatics,“Bulgarian“Academ¦ty“of“Sciences“(IY‹INF)¤ ™š’jArti cial–2Inš¦ttelligence“Departmen˜t¡’³©åSo a¡’ŸfBulgariaŸ'34‘sçResearc¦thers¡‘sçó"Kñ`y ó3 cmr10ÍZdra•²!vk“o›¦fMark“o“v,˜Genady˜Arge,˜Rositza˜Shk“oMŞdro“v‘ÿdDa.©34‘sçÒILP‘2Areas¡‘sçÍCase-based–¦flearning,“Multistrategy“learning,“Theory“revision.¦‘sçÒDescription–2of“Researc¦th¡‘sçÍThe–+“researc²!h“on“ILP›+qof“the“AI˜departmenš²!t“has“bMŞegun“a“few“y˜ears“ago,‘LŞwhen“w˜e“w˜ere“de-¡‘sçv²!eloping–!âthe“Net-Clause“Language“(NCL)›!Â[1‘yš,“5‘ ›|].‘PPNCL˜is“a“distributed“logic“programming¡‘sçlanguage,‘£Ùbased–q)on“data-driv²!en“computation“and“spreading“activ‘ÿdDation.‘>&Besides“the“basic¡‘sçlogic–#ğprogramming“features“of“NCL,“it“proš²!vides“a“built-in“mec˜hanism“for“term“general-¡‘sçization–ı§[3‘yš].‘ãŸThe“latter“ha•²!v“e–ı§bšMŞeen“used“for“implemen²!ting“b˜ottom-up“(sp˜eci c-to-general)¡‘sçinductivš²!e–¯Îalgorithms“in“relational“domains“[2‘yš,“4‘ )h].‘úNCL‘¯Šin˜tegrates“v‘ÿdDarious“computational¡‘sçmec•²!hanisms,›Éïsuc“h– as“standard“Prolog,˜bMŞottom-up“execution“of“logic“programs,˜spreading¡‘sçactiv‘ÿdDation–ë³(markš²!er“passing)“and“some“connectionist“features,‘=whic˜h“mak˜es“it“a“pMŞo˜w˜erful¡‘sçw•²!orkbšMŞenc“h–­ûfor“exp˜erimenš²!ting“with“v‘ÿdDarious“ILP–­·algorithms.‘ô›(NCL“is–­ûa˜v‘ÿdDailable“b˜y“anon˜y-¡‘sçmous–¦fftp“from“the“Univ•²!ersit“y–¦fof“Georgia“AI“arc•²!hiv“e,–¦fó(ßê