D-Net

        String sourceMappings = "{\"type\":\"result\", \"fields\":[\"<http://purl.org/dc/terms/identifier>\",\"<http://www.eurocris.org/ontologies/cerif/1.3#name>\",\"<http://lod.openaire.eu/vocab/year>\"]}";

        configuration.set("lod.redisHost", "83.212.96.39");

        configuration.set("lod.sourceMappings", sourceMappings);

        String stopwords = "a,able,about,above,abst,accordance,according,accordingly,across,act,actually,added,adj,affected,affecting,affects,after,afterwards,again,against,ah,all,almost,alone,along,already,also,although,always,am,among,amongst,an,and,announce,another,any,anybody,anyhow,anymore,anyone,anything,anyway,anyways,anywhere,apparently,approximately,are,aren,arent,arise,around,as,aside,ask,asking,at,auth,available,away,awfully,b,back,be,became,because,become,becomes,becoming,been,before,beforehand,begin,beginning,beginnings,begins,behind,being,believe,below,beside,besides,between,beyond,biol,both,brief,briefly,but,by,c,ca,came,can,cannot,cant,cause,causes,certain,certainly,co,com,come,comes,contain,containing,contains,could,couldnt,d,date,did,didnt,different,do,does,doesnt,doing,done,dont,down,downwards,due,during,e,each,ed,edu,effect,eg,eight,eighty,either,else,elsewhere,end,ending,enough,especially,et,et-al,etc,even,ever,every,everybody,everyone,everything,everywhere,ex,except,f,far,few,ff,fifth,first,five,fix,followed,following,follows,for,former,formerly,forth,found,four,from,further,furthermore,g,gave,get,gets,getting,give,given,gives,giving,go,goes,gone,got,gotten,h,had,happens,hardly,has,hasnt,have,havent,having,he,hed,hence,her,here,hereafter,hereby,herein,heres,hereupon,hers,herself,hes,hi,hid,him,himself,his,hither,home,how,howbeit,however,hundred,i,id,ie,if,ill,im,immediate,immediately,importance,important,in,inc,indeed,index,information,instead,into,invention,inward,is,isnt,it,itd,itll,its,itself,ive,j,just,k,keep,      keeps,kept,kg,km,know,known,knows,l,largely,last,lately,later,latter,latterly,least,less,lest,let,lets,like,liked,likely,line,little,ll,look,looking,looks,ltd,m,made,mainly,make,makes,many,may,maybe,me,mean,means,meantime,meanwhile,merely,mg,might,million,miss,ml,more,moreover,most,mostly,mr,mrs,much,mug,must,my,myself,n,na,name,namely,nay,nd,near,nearly,necessarily,necessary,need,needs,neither,never,nevertheless,new,next,nine,ninety,no,nobody,non,none,nonetheless,noone,nor,normally,nos,not,noted,nothing,now,nowhere,o,obtain,obtained,obviously,of,off,often,oh,ok,okay,old,omitted,on,once,one,ones,only,onto,or,ord,other,others,otherwise,ought,our,ours,ourselves,out,outside,over,overall,owing,own,p,page,pages,part,particular,particularly,past,per,perhaps,placed,please,plus,poorly,possible,possibly,potentially,pp,predominantly,present,previously,primarily,probably,promptly,proud,provides,put,q,que,quickly,quite,qv,r,ran,rather,rd,re,readily,really,recent,recently,ref,refs,regarding,regardless,regards,related,relatively,research,respectively,resulted,resulting,results,right,run,s,said,same,saw,say,saying,says,sec,section,see,seeing,seem,seemed,seeming,seems,seen,self,selves,sent,seven,several,shall,she,shed,shell,shes,should,shouldnt,show,showed,shown,showns,shows,significant,significantly,similar,similarly,since,six,slightly,so,some,somebody,somehow,someone,somethan,something,sometime,sometimes,somewhat,somewhere,soon,sorry,specifically,specified,specify,specifying,still,stop,strongly,sub,substantially,successfully,such,sufficiently,suggest,sup,sure,t,take,taken,taking,tell,tends,th,than,thank,thanks,thanx,that,thatll,thats,thatve,the,their,theirs,them,themselves,then,thence,there,thereafter,thereby,thered,therefore,therein,therell,thereof,therere,theres,thereto,thereupon,thereve,these,they,theyd,theyll,theyre,theyve,think,this,those,thou,though,thoughh,thousand,throug,through,throughout,thru,thus,til,tip,to,together,too,took,toward,towards,tried,tries,truly,try,trying,ts,twice,two,u,un,under,unfortunately,unless,unlike,unlikely,until,unto,up,upon,ups,us,use,used,useful,usefully,usefulness,uses,using,usually,v,value,various,ve,very,via,viz,vol,vols,vs,w,want,wants,was,wasnt,way,we,wed,welcome,well,went,were,werent,weve,what,whatever,whatll,whats,when,whence,whenever,where,whereafter,whereas,whereby,wherein,wheres,whereupon,wherever,whether,which,while,whim,whither,who,whod,whoever,whole,wholl,whom,whomever,whos,whose,why,widely,willing,wish,with,within,without,wont,words,world,would,wouldnt,www,x,y,yes,yet,you,youd,youll,your,youre,yours,yourself,yourselves,youve,z,zero\n";

        configuration.set("lod.stopwords", stopwords);

        String targetMappings = "{\"type\":\"publications\",\"fields\":[\"<http://purl.org/dc/terms/issued>\",\"<http://www.w3.org/2000/01/rdf-schema#label>\",\"<http://purl.org/dc/terms/identifier>\"]}";

        configuration.set("lod.targetMappings", targetMappings);

        targetMapDriver.withInput(new LongWritable(1), new Text("<http://dblp.l3s.de/d2r/resource/publications/books/acm/0082477>\t<http://purl.org/dc/terms/issued>\t\"1992\"\t.\t<http://dblp.l3s.de/d2r/resource/publications/books/acm/0082477>\t<http://www.w3.org/2000/01/rdf-schema#label>\t\"The no-nonsense guide to computing careers.\"\t.\t"));

import org.matheclipse.core.reflection.system.E;

    private static final String LINE_DELIM="\t.\t";

    private static final String FIELD_DELIM="\t";

        try {

            lodConfiguration = new LodConfiguration();

            lodConfiguration.load(context.getConfiguration().get("lod.sourceMappings"));

            redisHost = context.getConfiguration().get("lod.redisHost");

            redisPort = Integer.parseInt(context.getConfiguration().get("lod.redisPort"));

            log.debug("Redis connection info : " + "redis://" + redisHost + ":" + redisPort);

            client = RedisClient.create("redis://" + redisHost + ":" + redisPort);

            connection = client.connect();

            uriPrefix = context.getConfiguration().get("lod.prefix");

            stopWords = context.getConfiguration().get("lod.stopwords");

            for (String stopword : stopWords.split(",")) {

                stopWordsMap.put(stopword, 0);

            }

            System.out.println("Stopwords size " + stopWordsMap.size());

            log.debug("Stopwords size " + stopWordsMap.size());

        } catch (Exception ex) {

            log.error("An error occured during Mapper Setup " + ex.toString(), ex);

            System.out.println(ex.getCause().toString());

            String[] triples = result.toString().split(LINE_DELIM);

            for (String triple : triples) {

                String[] fields = triple.split(FIELD_DELIM);

                if (id.length() < 1) {

                    id = id.append("source_").append(fields[0]);

                String property = fields[1];

                String value = fields[2];

            writeToRedis(id.toString(), result.toString(), context);

    private void writeToRedis(String key, String value, Context context) throws Exception {

    private static final String LINE_DELIM="\t.\t";

    private static final String FIELD_DELIM="\t";

        try {

            lodConfiguration = new LodConfiguration();

            lodConfiguration.load(context.getConfiguration().get("lod.targetMappings"));

            redisHost = context.getConfiguration().get("lod.redisHost");

            redisPort = Integer.parseInt(context.getConfiguration().get("lod.redisPort"));

            client = RedisClient.create("redis://" + redisHost + ":" + redisPort);

            log.debug("Redis connection info : " + "redis://" + redisHost + ":" + redisPort);

            connection = client.connect();

            uriPrefix = context.getConfiguration().get("lod.prefix");

            stopWords = context.getConfiguration().get("lod.stopwords");

            for (String stopword : stopWords.split(",")) {

                stopWordsMap.put(stopword, 0);

            }

            log.info("Stopwords size " + stopWordsMap.size());

            System.out.println("Stopwords size " + stopWordsMap.size());

        } catch (Exception ex) {

            log.error("An error occured during Mapper Setup " + ex.toString(), ex);

            System.out.println(ex.getCause().toString());

            String[] triples = result.toString().split(LINE_DELIM);

            for (String triple : triples) {

                String[] fields = triple.split(FIELD_DELIM);

                if (id.length()<1) {

                      id.append("target_").append(fields[0]);

                String value = fields[2];

            writeToRedis(id.toString(), result.toString(), context);

    private void writeToRedis(String key, String value, Context context) throws Exception {

        System.out.println("generated tokens " + tokens);