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scrum master scrum product owner spark spark sql 诲茅惫别濒辞辫辫别耻谤蝉 daily scrum transparence transformation spark ml action mapfilter reduce foreach spark graphx count spark streaming tuple patterns matching on immutable collection wildcard pattern pattern alternative pattern matching typed patterns guards in case clauses nested pattern matching in case classes matching o matching on list matching on case class catalyst optimizer vue temporaire sqlimplicits sparksession apache spark sparksql apache spark sql row datasource operation dataset dataframereader take filter join spark core op茅ration spark collect map rdd closure function composition functional programming nested functions anonymous function 肠濒么迟耻谤别 r茅f茅rence de m茅thode functional interface defender methods java 8 method reference java functional interface m茅thode par d茅faut default methods in interfaces lambda expression m茅thodes par d茅faut default methods java.util.function method references syntax of lambda expressions countbykey first pattern guards matching on option pattern matching and recursive function basic pattern matching filtrage par motif fonction anonyme fonction pure programmation fonctionnelle curried function tail calls and tail call optimization curryfication 谤茅肠耻谤蝉颈惫颈迟茅 pure function fonction d鈥檕rdre sup茅rieur first class function function literal functional thinking fonction partielle 谤茅肠耻谤蝉颈惫颈迟茅 terminale product backlog artefacts developers roles courage respect ouverture focus engagement valeurs 补诲补辫迟补产颈濒颈迟茅 inspection piliers la pens茅e lean 濒鈥檈尘辫颈谤颈蝉尘别 principes de scrum clause where create clauses relationship bonnes pratiques product owner r猫gles inspection scrum team adaptation synchronisation evenments r么les livrables parties prenantes scrum team 补驳颈濒颈迟茅 adapation artefacts scrum inspection gaol sprint increment sprint backlog sprint retrospective product backlog sprint review sprint planning sprint 茅v茅nements scrum minmaxscaler pipeline n-gram tokenization evaluation d'une m茅thode d'apprentissage cross validation normalizer spark mlib validation crois茅e evalution d'une m茅thode ml workflow ml transformer stringindexer binarization sql ast dataframe requ锚te sql column hive dataframewriter clause merge label constraint clause with match index motif pattern node cql noeud noe4j nosql lien cypher relation pipelinestage transformateur estimator estimateur lambda syntax