Recursive Neural Network

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1、21WordVector?PhrasesVector?DocumentVector?Goal:MapthesentencesbelowintotheSAMEvectorThecountryofmybirthTheplacewhereIwasborn4672Anotherrnn…orz…Nottobeconfusedwithrecurrentneuralnetwork910312131415164Objectivefunction?BackpropagationthroughstructureFeature-vectorrepr

2、esentationofaparsetree18Thelarger,thebetter19???,??≥???,?+∆?,??,∀?∈?(??)Thescoreofthecorrecttreewillbelargerthanothertrees’,morethanamargin∆(?,??)201.SumderivativesofWfromallnode2.Splitderivativesateachnode3.Adderrormessage21222324275Singleweightmatrixisnotadequateform

3、orecomplexandlongerphrasesMoresyntacticcategories,punctuation,etc.29306CVG=PCFG+RNN/SU-RNN323334CVG367ClassificationSceneparsingMulti-classsegmentation3839400