JPS6367677A - machine translation device - Google Patents

Abstract

PURPOSE:To obtain an index showing the effects of order changes of the grammatical rules by using a device which decides the assurance degree of an output translated sentence from the assurance degree given to a grammatical rule and therefore obtaining a key to select the correct one out of plural interpretations. CONSTITUTION:A sentence to be translated is supplied through an input device 11 and an analyzing device 12 performs the analyses of morphemes and the syntax structure to the input sentence for transformation into an intermediate structure. This intermediate structure is converted into that of an object language by a generating device 13. Then a translated sentence is produced. In such a case, the assurance degrees are previously given to the grammatical rules which are used by the devices 12 and 13. An assurance degree deciding device 15 calculates the mean degree of assurance of those applied rules. The obtained translated sentence and its assurance degree are outputted to an output device 14.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a machine translation device that analyzes an input sentence using grammatical rules and translates it into a target language.

BACKGROUND OF THE INVENTION In recent years, machine translation devices have attracted attention as an application of natural language processing technology.

An example of a conventional machine translation device will be described below with reference to the drawings.

FIG. 3 shows the configuration of a conventional machine translation device.

31 is an input device, and generally a keyboard or the like is used. A sentence to be translated is input using this input device 31. Reference numeral 32 denotes an analysis device, which analyzes an input sentence as follows. First, morphological analysis of the input sentence is performed. Here, the input sentence is divided into units called morphemes and necessary information such as part of speech is added. Next, parse the syntax. Here, the morphologically analyzed sentence is analyzed using grammatical rules to generate an intermediate structure. 33 is a generation 4.4, which converts the intermediate structure generated by the analysis device 32 into an intermediate structure of the target language, and then generates a translated sentence from the intermediate structure. 34 is an output device, which outputs the translated sentence generated by the generation device 33. (For example, Yuji Uchida "Latest trends in machine translation Jbitvo1.16. no, 10.
(See pp. 42-50).

Problems to be Solved by the Invention However, machine translation devices cannot always output a single correct interpretation. Therefore, conventional machine translation devices allow users to select the correct interpretation from among multiple interpretations. However, if the user of the machine translation device is not familiar with the target language to be translated, it is not easy to select the correct one from among multiple interpretations, and the problem is that they are not given any clues to make a decision. There was a point.

In addition, in order to obtain a high-quality translated text, the analysis device and the generation device must use heuristic grammatical rules.
mmar rules). Empirical grammar rules are grammar rules that are not always successful, but are considered to be quite effective when applied.

However, the effects of empirical grammar rules vary greatly depending on the order in which they are applied. Therefore, the problem is in what order to apply the words, but with conventional machine translation devices, there is a problem in that there is no indicator that directly indicates how much the effect changes when the order of application is changed.

In view of the above-mentioned problems, the present invention has developed a system that calculates the confidence level of a translated sentence, which serves as a clue for selecting the correct one from among a plurality of output translated sentences, and also serves as an indicator of the effect of changing the application order of empirical grammar rules. The present invention provides a machine translation device that can be added to a computer.

Means for Solving the Problems In order to solve the above problems, the machine translation device of the present invention has the following features:
In addition to the configuration of conventional machine translation devices, when each grammatical rule used in the analysis device and generation device is given a degree of certainty that represents its certainty, there is a certainty factor that determines the degree of certainty of the output translated sentence from that degree of certainty. It is equipped with a degree determination device.

Effect of the present invention By determining the confidence level of an output translated sentence using the above-described configuration, the present invention provides a clue when selecting the correct interpretation from among multiple translations, and provides an index representing the effect of changing the order of grammatical rules. Can be done.

That is, when a translated sentence is output, the confidence level of the translated sentence is also output, so the user of the machine translation device can refer to the confidence level and select the interpretation that he or she thinks is correct. Furthermore, when translating multiple sentences at once, the user can efficiently perform post-revise by starting from sentences with low confidence. Furthermore, when a new grammar rule is added or the order in which rules are applied is changed, the confidence level also changes, so the effect can be seen.

Embodiment Hereinafter, a machine translation apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the configuration of a machine translation device in an embodiment of the present invention. In FIG. 1, 11 is an input device;
4 is an output device, which is the same as the conventional one. Reference numeral 12 denotes an analysis device, and 13 a generation device.What differs from conventional devices is that certainty can be given to the grammar rules used therein.

Reference numeral 15 denotes a certainty determining device, which calculates the certainty of an output translated sentence from the certainty given to each grammar rule.

The operation of the machine translation device configured as described above will be explained below with reference to FIGS. 1 and 2.

First, a sentence to be translated is input using the input device 11. Next, the input sentence is subjected to morphological analysis and syntactic analysis by the analysis device 12, and converted into an intermediate structure. Further, the intermediate structure is converted into an intermediate structure of the target language by the generating device 13, and then a translated sentence is generated. At this time, analysis device 1
2 and the grammar rules used in the generation device 13 are given a degree of certainty in advance (.

Then, the average value of the reliability of the accepted rules is calculated by the reliability determination device 15, and the obtained translated sentence and its reliability are outputted to the output device 14.

FIG. 2 shows an example of a display screen when a display device such as a display is used as the output device 14. Here, CF represents the confidence level of the translated sentence.

By referring to this confidence level and inputting the number of the sentence for which the next interpretation is to be output in the "Next Candidate" field, the next interpretation of the specified sentence will be displayed.

Effects of the Invention As described above, the present invention selects an interpretation that is considered to be correct from among multiple interpretations by providing a confidence determining device that determines the confidence of an output translated sentence from the confidence given to a grammar rule. It can provide clues for selection and provide an indicator of the effect of changing the order of grammar rules.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a machine translation device according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing a display screen of an embodiment of the present invention, and FIG. 3 is a block diagram of a conventional machine translation device. . 11...Input device, 12...Analysis device, 13...Generation device, 14...Output device, 15...Confidence level determination Device. Name of agent: Patent attorney Toshio Nakao (1 person) Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] an input device for inputting a sentence to be translated; an analysis device for analyzing the sentence input by the input device;
A generation device for converting and generating sentences in the target language from the parsed sentences, an output device for outputting the generated translated sentences, and grammatical rules used in the analysis device or generation device. 1. A machine translation device comprising: a certainty determination device that determines the certainty of an output translated sentence from the certainty when a certainty representing the certainty is given.