An evaluation of a computational model of lexical access: comment on Dell et al. (1997).
An evaluation of a computational model of lexical access: comment on Dell et al. (1997).
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词汇访问计算模型的评估：对 Dell 等人的评论。
DOI：
10.1037/0033-295x.107.3.609
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发表时间：
2000
影响因子：
5.4
通讯作者：
Caramazza,A
中科院分区：
文献类型：
--
作者：
Ruml,W;Caramazza,A
词汇通达的计算模型是由GS Dell，MF Schwartz，N. Martin，EM Saffran，and DA Gagnon（1997）.他们认为，他们的模型与从正常和脑损伤患者中获得的命名数据的拟合支持了关于词汇中的交互性、失语症的整体损伤以及正常和失语症命名行为之间的连续性的假设。进一步的分析表明，该模型与经验数据的拟合程度很差，即使该模型是准确的，戴尔等人根据该模型的表现提出的主张也不会成立。虽然使用一种新的自动回归程序提高了模型的拟合，但它不能解释戴尔等人的5。的21例患者（24%），其局限性被认为是固有的设计。有人认为，戴尔等人提出的主张只能通过考虑来自多个相关任务的证据和比较多个计算模型来解决。
The computational model of lexical access proposed by GS Dell, MF Schwartz, N. Martin, EM Saffran, and DA Gagnon (1997) is evaluated. They argued that fits of their model to naming data obtained from normal and brain-damaged patients support assumptions regarding interactivity in the lexicon, global damage in aphasia, and continuity between normal and aphasic naming behavior. Additional analysis reveals that the model fits the empirical data poorly and that the claims Dell et al. made on the basis of the model's performance would not follow even if the model were accurate. Although use of a novel automatic regression procedure improved the model's fit, it cannot account for 5 of Dell et al.'s 21 patients (24%), and its limitations were found to be inherent in its design. It is argued that claims such as those made by Dell et al. can only be addressed by considering evidence from multiple related tasks and by comparing multiple computational models.