Cynthia Fisher


Gold Standard Annotations for Preposition and Verb Sense with Semantic Role Labels in Adult-Child Interactions
Lori Moon | Christos Christodoulopoulos | Cynthia Fisher | Sandra Franco | Dan Roth
Proceedings of the 27th International Conference on Computational Linguistics

This paper describes the augmentation of an existing corpus of child-directed speech. The resulting corpus is a gold-standard labeled corpus for supervised learning of semantic role labels in adult-child dialogues. Semantic role labeling (SRL) models assign semantic roles to sentence constituents, thus indicating who has done what to whom (and in what way). The current corpus is derived from the Adam files in the Brown corpus (Brown 1973) of the CHILDES corpora, and augments the partial annotation described in Connor et al. (2010). It provides labels for both semantic arguments of verbs and semantic arguments of prepositions. The semantic role labels and senses of verbs follow Propbank guidelines Kingsbury and Palmer, 2002; Gildea and Palmer 2002; Palmer et al., 2005) and those for prepositions follow Srikumar and Roth (2011). The corpus was annotated by two annotators. Inter-annotator agreement is given separately for prepositions and verbs, and for adult speech and child speech. Overall, across child and adult samples, including verbs and prepositions, the kappa score for sense is 72.6, for the number of semantic-role-bearing arguments, the kappa score is 77.4, for identical semantic role labels on a given argument, the kappa score is 91.1, for the span of semantic role labels, and the kappa for agreement is 93.9. The sense and number of arguments was often open to multiple interpretations in child speech, due to the rapidly changing discourse and omission of constituents in production. Annotators used a discourse context window of ten sentences before and ten sentences after the target utterance to determine the annotation labels. The derived corpus is available for use in CHAT (MacWhinney, 2000) and XML format.


An incremental model of syntactic bootstrapping
Christos Christodoulopoulos | Dan Roth | Cynthia Fisher
Proceedings of the 7th Workshop on Cognitive Aspects of Computational Language Learning


Starting from Scratch in Semantic Role Labeling
Michael Connor | Yael Gertner | Cynthia Fisher | Dan Roth
Proceedings of the 48th Annual Meeting of the Association for Computational Linguistics


Minimally Supervised Model of Early Language Acquisition
Michael Connor | Yael Gertner | Cynthia Fisher | Dan Roth
Proceedings of the Thirteenth Conference on Computational Natural Language Learning (CoNLL-2009)


Baby SRL: Modeling Early Language Acquisition.
Michael Connor | Yael Gertner | Cynthia Fisher | Dan Roth
CoNLL 2008: Proceedings of the Twelfth Conference on Computational Natural Language Learning