文档介绍：Researches on Semant c Annotat oR Techno ogy for Mar Be L terature Metadata Abstract Nowadays,marine literaturemetadata isdeveloping fastwiththeflourish ofmarine marine subjects areinter-crossed intheresearch area;marine literaturemetadata ofdifferentsubjects ,solutions for theshare andinteroperability ofmarine literaturemetadata are urgently needed. Semantic metadata Calldescribe semantic information ofresource,and support data share andinteroperability inthesemantic annotation technology can translatemetadata Oilthisground,the thesis investigates semanticannotationtechnology formarine literaturemetadata. From Ourresearch andanalysis offormerly proposed semantic annotation toolsand methods,this thesisshows thatsemantic annotation technology formadne literature metadata ischaracterized by two key technologies:the technology ofAutomatic Marine Literature MetadataSelection(AMLMS)and thetechnology ofAutomatic Semantic Annotation forMarine LiteratureMetadata(ASAMLM).Marine literature met,adam callbeclassified andselectedautomatically byusingAMLMS。Meanwhile, theASAMLM then carl automatically translate the chosen metadata intosemantic two technologies andtheirimplementation are thefocus ofthethesis. ⅡlcAMLMS isbased on thetheory ofmachine—learning—based textcategorization. pares themost threefamous classifiersincluding maximum entropy model fMEM),support vector machine(SVM)and parison experiment shows thatthebestclassifierforAMLMS isthemaximum entropy model whose precision and %and %respectively. nlc lassificationsystem forliteraturemetadata isimplemented诚也C群. T}listhesisdeeply analyzes XM'LSchema,and findsthattherearemuch semantics of the domain knowledge inhering inthe structure on this investigation,the thesispresents allalgorithm forautomatic generation ofontology, which extracts thesemantics andgenerates original dom