Translation of UNL Expression into Vietnamese Compound Sentence Based on DeConverter Tool

DeConverter is one of the core software of the Universal Networking Language (UNL) translation system. Automatic translation system based on UNL consists of two components: EnConverter and DeConverter. EnConverter is used to translate a sentence from natural language into an equivalent UNL expression, and DeConverter is used to create a sentence on natural language from an UNL expression. The UNL system has supported over 48 different languages, but not much as certain research has been done for Vietnamese. In this paper, we describe the process of the translation from UNL expressions with scope into Vietnamese sentences by analyzing Vietnamese grammar and the semantic relationships in UNL expressions with scope node and how rules of translation from UNL expressions to equivalent Vietnamese sentences are built. We tested the UNL–Vietnamese–English translation on 500 different expressions alternatively by the DeCoVie tool and the English server, which was then compared to the manual translations. The results showed that the two machine translations are synonymous and 90% are identical in terms of grammar.