Alignment by Agreement
نویسندگان
چکیده
We present an unsupervised approach to symmetric word alignment in which two simple asymmetric models are trained jointly to maximize a combination of data likelihood and agreement between the models. Compared to the standard practice of intersecting predictions of independently-trained models, joint training provides a 32% reduction in AER. Moreover, a simple and efficient pair of HMM aligners provides a 29% reduction in AER over symmetrized IBM model 4 predictions.
منابع مشابه
Word order type and alignment type*
In her recent stimulating book NICHOLS (1992) suggests that there are no correlations between word order type and morphological alignment, where by alignment is meant the patterns of argument marking in mono-transitive and intransitive clauses, e.g. accusative, ergative, active, tripartite, hierarchical and neutral. Her findings pertain to the relationship between word order type and the domina...
متن کاملGappy Phrasal Alignment By Agreement
We propose a principled and efficient phraseto-phrase alignment model, useful in machine translation as well as other related natural language processing problems. In a hidden semiMarkov model, word-to-phrase and phraseto-word translations are modeled directly by the system. Agreement between two directional models encourages the selection of parsimonious phrasal alignments, avoiding the overfi...
متن کاملIT - Business Strategic Alignment and Organizational Agility: The Moderating Role of Environmental Uncertainty
This study investigates the effect of IT-business strategic alignment on organizational agility by considering the effects of IT flexibility and IT capability on strategic alignment. Also this study investigates the moderating role of environmental uncertainty on the relationship between strategic alignment and organizational agility. This research is an applied research based on purpose and de...
متن کاملThe Study of Alignment between Corporate Strategy & Human Resource (HR) Strategy (Case Study: National Iranian Gas Company)
The final goal of strategic management is to implement strategic plans, Therefore the alignment between corporate strategy and functional strategy is considerable. This study investigates the degree of alignment between HR strategy and corporate strategy of the national gas company. Data collection was conducted by questionnaire by 51 questions. The content validity of questionnaire was assesse...
متن کاملUnsupervised Word Alignment by Agreement Under ITG Constraint
We propose a novel unsupervised word alignment method that uses a constraint based on Inversion Transduction Grammar (ITG) parse trees to jointly unify two directional models. Previous agreement methods are not helpful for locating alignments with long distances because they do not use any syntactic structures. In contrast, the proposed method symmetrizes alignments in consideration of their st...
متن کاملBusiness-IT Strategic Alignment Focused on Social and Technical Dimensions
Achieving business-IT alignment is one of the main purposes and also challenges of organizations. Many studies have indicated the importance of aligning information systems (IS) function with other business functions. The main purpose of this survey is evaluating business-IT alignment focusing on social and technical dimensions of business-IT alignment in Bank Mellat. The data was collected thr...
متن کامل