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徐东钦  等:基于多任务预训练的 AMR 文本生成研究                                                     3047


                       在例(3)中,Reconstructor 方法与基准系统均出现了不同程度的实体生成错误,而本文方法能够较好地
                        表达出 AMR图的语义.总体而言,与基于图模型的 Reconstructor系统和基准系统相比,本文方法生成的
                        文本更为连贯,语义更为明确.

                                         Table 6    Case studies on AMR-to-text generation
                                                表 6   AMR 文本生成案例分析
                       (1)    (d/distribute-01
                                     :ARG1 (d2/document
                                           :ARG0-of (o/outline-01
                                                 :ARG1 (p/propose-01
                                                       :ARG0 (c/country:wiki “Israel”
                                                             :name (n/name:op1 “Israel”)))))
                                     :ARG2 (p2/person:quant 45
                                           :ARG0-of (h/have-org-role-91
                                                 :ARG1 (o2/organization:wiki “Nuclear_Suppliers_Group”
                                                       :name (n2/name:op1 “Nuclear”:op2 “Suppliers”:op3 “Group”))
                                                 :ARG2 (m/member)))
                                  :time (d3/date-entity:year 2007:month 3))
                                       documents outlining the israeli proposal were distributed to
                            Reference
                                       the 45 member nuclear suppliers group (nsg) in march 2007.
                                       in march 2007 a document outlining israel’s proposal was distributed to
                            Reconstructor
                                       45 members of the nuclear suppliers group.
                                       in march 2007 an document outlining israel’s proposal was distributed
                            Baseline
                                       from 45 members of the nuclear nonproliferation group.
                                       documents outlining the israeli proposal were distributed to
                            Our
                                       45 members of the nuclear suppliers group in march 2007.
                       (2)     (s/say-01
                                     :ARG0 (a/accord-03)
                                     :ARG1 (r/remain-01
                                           :ARG1 (a2/and
                                                 :op1 (i/issue-02:polarity-
                                                       :ARG0 p)
                                                 :op2 (a3/ambiguity:polarity-)
                                                 :ARG0-of (r2/regard-01
                                                       :ARG1 (a4/and
                                                             :op1 (p/program
                                                                   :mod (n/nucleus)
                                                                   :poss (c2/country:wiki “Iran”
                                                                        :name (n2/name:op1 “Iran”)))
                                                             :op2 (a5/activity-06
                                                                   :ARG0 c2
                                                                   :mod n))))))
                                       the accord said that there were no remaining issues and
                            Reference
                                       ambiguities regarding iran’s nuclear program and activities.
                                       according to the accord, there remains no issue and
                            Reconstructor
                                       no ambiguities regarding iran’s nuclearprogram and nuclear activities.
                                       the accord said it remains a fact that the program did not issue and
                            Baseline
                                       is not ambiguity regarding iran’s nuclear program and iran’s nuclear activities.
                                       according to the accord, there remains no issue and
                            Our
                                       ambiguity regarding iran’s nuclear program and activities.
                       (3)     (t/tell-01
                                     :ARG0 (n/newspaper:wiki “Richmond_Times-Dispatch”
                                           :name (r/name:op1 “Richmond”:op2 “Times-Dispatch”))
                                     :ARG1 (t2/tale
                                           :topic (i/impact-01
                                                 :ARG1 (r2/road:wiki-
                                                       :name (h/name:op1 “Huguenot”:op2 “Trail”)
                                                       :location (c/county:wiki “Powhatan_County,_Virginia”
                                                             :name (p/name:op1 “Powhatan”:op2 “County”)))))
                                  :time (t3/today))
                                       the richmond times-dispatch tells the tale today about the impact
                            Reference
                                       on the huguenot trail in powhatan county.
                            Reconstructor  today, the riche timeline tells a tale of the impact on the huffington trail in politburo county.
                                       richmond times-dispatch newspaper today told that the tale
                            Baseline
                                       about the impact of huguenot trail at polt an county.
                                       today, the richmond times-dispatch tells a tale
                            Our
                                       about the impact of the huguenot trail in powhatan county.
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