A Factoid Question Answering System for Vietnamese

In this paper, we describe the development of an end-to-end factoid question answering system for the Vietnamese language. This system combines both statistical models and ontology-based methods in a chain of processing modules to provide high-quality mappings from natural language text to entities. We present the challenges in the development of such an intelligent user interface for an isolating language like Vietnamese and show that techniques developed for inflectional languages cannot be applied "as is". Our question answering system can answer a wide range of general knowledge questions with promising accuracy on a test set.Comment: In the proceedings of the HQA'18 workshop, The Web Conference Companion, Lyon, Franc

The Importance of Automatic Syntactic Features in Vietnamese Named Entity Recognition

This paper presents a state-of-the-art system for Vietnamese Named Entity Recognition (NER). By incorporating automatic syntactic features with word embeddings as input for bidirectional Long Short-Term Memory (Bi-LSTM), our system, although simpler than some deep learning architectures, achieves a much better result for Vietnamese NER. The proposed method achieves an overall F1 score of 92.05% on the test set of an evaluation campaign, organized in late 2016 by the Vietnamese Language and Speech Processing (VLSP) community. Our named entity recognition system outperforms the best previous systems for Vietnamese NER by a large margin.Comment: 7 pages, 9 tables, 3 figures, accepted to PACLIC 201

Managing Aircraft Ground Handling Delays in Vietnam Airlines by using Supply Chain Strategy

Punctuality is one of the key performance indicators in the airline industry and an important service differentiator especially for valuable high-yield customers based on the supply chain strategy. In addition, improved on-time performance can help achieve significant cost savings. Airlines report delay costs from 0.6 to up to as much as 2.9% of their operating revenues. Vietnam Airlines (VNA) stated that they want to convey passengers or freight from one point to another with maximum safety, efficiency and on time performance. However, within 12.34% of delayed flights in 2011due to aircraft ground handling (annual report’s TOC), VNA operation is not very effective in aircraft ground handling. The project is about aircraft ground handling process in VNA. Supply chain strategy can be used in airlines to improve its fluency