CN101075232A - System and method for automatically stating speech estimation - Google Patents
System and method for automatically stating speech estimation Download PDFInfo
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- CN101075232A CN101075232A CN 200610080413 CN200610080413A CN101075232A CN 101075232 A CN101075232 A CN 101075232A CN 200610080413 CN200610080413 CN 200610080413 CN 200610080413 A CN200610080413 A CN 200610080413A CN 101075232 A CN101075232 A CN 101075232A
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Abstract
A method for setting questions on pronunciation test includes setting up optimum-selected phonetic alphabet set first, then generating word to be examined and updating lexicon to be examined and lexicon as well as phonetic alphabet set according to word to be examined, finally judging whether task of setting questions in finalized or not and clearing up library of word to be after questions are set if it is or otherwise repeating all said steps. The system used for realizing said method is also disclosed.
Description
Technical field
The present invention relates to the computing machine technology of assigning a topic automatically, more particularly, the present invention relates to a kind of automatic proposition system and method that is used for speech evaluating.
Background technology
Speech evaluating is meant the similarity on the phonetics meaning between tested voice of evaluation and test and the received pronunciation, and wherein tested voice are the oral voice records of being evaluated and tested content of reading aloud of testee.By the evaluation and test content can be that the on-the-spot of testee freely brought into play, but generally all is some speech and sentences of regulation in advance, also is the speech evaluating examination paper.
The proposition requirement of speech evaluating, PSC examination outline for example generally not only limits speech evaluating and selects speech scope, the requirements such as phonetic kind, quantity and distribution of setting examination paper with examination paper, also require the examination paper of different time not repeat simultaneously, i.e. proposition has randomness.
Traditional speech evaluating proposition algorithm is, selects speech from vocabulary at random, perhaps forms speech at random with phonetic, checks this speech then and whether the speech selected satisfies the outline requirement, and is satisfied then keep as speech evaluating examination paper speech, otherwise abandons.The shortcoming of this traditional algorithm is, along with keeping increasing of examination paper speech, the choice of speech syllable to be selected is more and more littler, these syllables are difficult to form speech in vocabulary, the computation complexity of group speech increases severely exponential form, often be that up to ten million time the trial but is difficult to successfully once, and success or not depends on fortune fully, algorithm itself can not be controlled.
Summary of the invention
The objective of the invention is, at the shortcoming of above-mentioned traditional voice evaluation and test with the proposition algorithm, a kind of automatic proposition system and method are provided, it can be according to the proposition requirement of speech evaluating, automatically prepare speech evaluating examination paper, when saving the proposition cost, improve the proposition success ratio with randomness.
To achieve the above object of the invention, the invention provides a kind of automatic proposition system that is used for speech evaluating, satisfy assign a topic that require, unduplicated examination paper in order to provide at different time, include :-database, wherein ,-dictionary is used for storage proposition available words,-phonetic collection, be used for storage proposition phonetic demand ,-preferred phonetic collection is used to store preferred phonetic, the dictionary that reach-needs checking is used for the storage speech that needs checking;-preferred phonetic is set up module, is used to the newly-built preferred phonetic collection of associating dictionary and phonetic collection;-speech the generation module that needs checking is used to associating dictionary and preferred phonetic collection and produces at random and need checking speech and upgrade need checking dictionary, dictionary and phonetic collection according to this speech that needs checking; And-the proposition module, be used to judge whether the proposition task is finished, judge promptly also whether the speech of storing in the dictionary that needs checking that needs checking satisfies the proposition requirement, be then to carry out to empty the dictionary that needs checking after setting a question, otherwise continue proposition.
The present invention also provides a kind of automatic proposition method that is used for speech evaluating, satisfies assign a topic that require, unduplicated examination paper in order to provide at different time, and its method includes step: set up preferred phonetic collection; Produce at random and need checking speech and to upgrade need checking dictionary, dictionary and phonetic collection according to this speech that needs checking; Judge whether the speech of storing in the dictionary that needs checking that needs checking satisfies the proposition requirement, be then to carry out to empty the dictionary that needs checking after setting a question, otherwise repeat above-mentioned steps.
That is to say that disclosed system includes that database, preferred phonetic collection are set up module, need checking speech generation module and proposition module; Wherein database includes dictionary, phonetic collection, preferred phonetic collection and the dictionary that needs checking, and is respectively applied for storage proposition available words, proposition phonetic demand, preferred phonetic and the speech that needs checking; Preferred phonetic collection is set up module and is used to associating dictionary and the newly-built preferred phonetic collection of phonetic collection; The speech generation module that needs checking is used to associating dictionary and preferred phonetic collection and produces at random and need checking speech and upgrade need checking dictionary, dictionary and phonetic collection according to this speech that needs checking; The proposition module is used to judge whether the proposition task is finished; Its method includes step, at first set up preferred phonetic collection, produce then and need checking speech and to upgrade need checking dictionary, dictionary and phonetic collection according to this speech that needs checking, judge at last whether the speech of storing in the dictionary that needs checking that needs checking satisfies the proposition requirement, be then to carry out to empty the dictionary that needs checking after setting a question, otherwise repeat above-mentioned steps.
By disclosed System and method for, the user can be according to the life examination purpose of speech evaluating, the speech evaluating examination paper that light preparation not only meets the proposition requirement but also has randomness comprise at vocabulary under the situation of 20000 speech, and the required time of at every turn assigning a topic has only tens of seconds; And because whole proposition process is controlled by algorithm itself fully, the proposition success ratio generally can both reach 100%.
Description of drawings
Fig. 1 is the disclosed automatic proposition system synoptic diagram that is used for speech evaluating; And
Fig. 2 is the disclosed automatic proposition method flow diagram that is used for speech evaluating.
Wherein, description of reference numerals is as follows:
The document 100-requirement of assigning a topic;
The 200-database; The 210-dictionary; 220-phonetic collection; The preferred phonetic collection of 230-; The 240-dictionary that needs checking;
The preferred phonetic collection of module 300-is set up module;
The module 400-speech generation module that needs checking;
The module 500-module of assigning a topic;
Step 600-associating dictionary and the newly-built preferred phonetic collection of phonetic collection;
Step 610-calculates the sub-preferred number of dictionary of phonetic;
Step 620-calculates the phonetic collected works preferred number of phonetic;
Step 630-calculates the preferred number of phonetic;
Step 640-by the preferred number ordering, selects the newly-built preferred phonetic collection of preceding 1/N that preferred number is the highest in the phonetic with phonetic;
Step 700-associating dictionary produces the speech that needs checking at random with preferred phonetic collection, upgrades need checking dictionary, dictionary and phonetic collection;
Step 710-obtains candidate word by preferred phonetic retrieval dictionary;
Step 720-selects the 1/M of candidate word as needing checking speech at random;
The step 730-speech that will need checking deposits the dictionary that needs checking in, deletes this speech that needs checking in the dictionary simultaneously, and deducts the phonetic demand that phonetic is concentrated this speech contribution that needs checking;
Step 800-judges whether the proposition task is finished, and judges just whether the speech of storing in the dictionary that needs checking that needs checking satisfies the proposition requirement, is execution in step 900 then, otherwise continues proposition;
Step 900-proposition task is finished, and empties the dictionary that needs checking after execution is set a question.
Embodiment
The present invention is a kind of automatic proposition system and method that is used for speech evaluating.
At first, please refer to Fig. 1, the disclosed automatic proposition system synoptic diagram that is used for speech evaluating be described, include:
(a) the document proposition requires 100, is used for the requirements such as range of choice of kind, quantity, distribution and the examination paper speech of regulation examination paper phonetic.
(b) database 200, include
I, dictionary 210 are used for storage proposition available words, are disyllabic word tables, specify that the disyllabic word table is a kind of of vocabulary.This vocabulary can be retrieved according to phonetic, such as: according to a, can retrieve sea (dahai), distribution (fenfa) etc.; And each disyllabic word that comprises in this vocabulary all has phonetic and tonal properties field.
The primary data of dictionary 210 derives from the range of choice that proposition requires the examination paper speech of 100 regulations.Along with the operation of automatic proposition system, the data of storage will constantly reduce in the dictionary 210.This is because in automatic proposition system operational process, and the speech that needs checking that every generation is once new just needs this speech that needs checking in the deletion dictionary 210.
II, phonetic collection 220 are used for storage proposition phonetic demand.Each phonetic demand all has the quantity required of phonetic, phonetic and the attribute fields such as preferred number of phonetic, wherein, the preferred number of phonetic is the sub-preferred number of dictionary (also being the preferred number of phonetic in dictionary 210) of phonetic and the weighted sum of the phonetic collected works preferred number (also being the preferred number of phonetic in phonetic collection 220) of phonetic.The computation rule of the sub-preferred number of dictionary of phonetic is that phonetic occurrence number in dictionary 210 is few more preferential more, and The common calculation methods is that the sub-preferred number of the dictionary of a phonetic equals 1 and subtracts the frequency of occurrences of this phonetic in dictionary 210; And the computation rule of the phonetic collected works preferred number of phonetic is that phonetic quantity required in phonetic collection 220 is many more preferential more, and The common calculation methods is that the phonetic collected works preferred number of a phonetic equals the demand ratio of this phonetic in phonetic collection 220.The value of weight factor was an empirical value during weighted sum was calculated, and who more importantly decide by two sub-preferred numbers, and the simplest value of general employing is that two weight factors are equal to 1.Like this, the preferred number of a phonetic equals the demand ratio of this phonetic in phonetic collection 220 and adds 1 and subtract the frequency of occurrences of this phonetic in dictionary 210.
Primary data about the quantity required of phonetic and phonetic in the phonetic collection 220 derives from the requirements such as kind, quantity and distribution that proposition requires the examination paper phonetics of 100 regulations.Along with the operation of automatic proposition system, the data of storage will constantly change in the phonetic collection 220.This is because in automatic proposition system operational process, and the speech that needs checking that every generation is once new also needs to deduct the phonetic demand that this speech that needs checking is contributed in the phonetic collection 220 in this speech that needs checking in deletion dictionary 210; And along with the carrying out of above-mentioned renewal, the data about the preferred number of phonetic in the phonetic collection 220 also will change.
III, preferred phonetic collection 230 are used to store preferred phonetic, and preferred phonetic is to have the phonetic of high preferred number.
Preferred phonetic concentrates the highest preceding 1/N phonetic of preferred number to produce by choosing phonetic, and wherein N is not less than 1 integer.The value of N is an empirical value, need concentrate the number of different phonetics to decide on phonetic, and general the most frequently used value is that N equals 5.
The primary data of preferred phonetic collection 230 is empty.Along with the operation of automatic proposition system, the data of storage will constantly rewrite in the preferred phonetic collection 230.This is because in automatic proposition system operational process, the preferred phonetic that every generation is once new just will override original preferred phonetic, be stored in the preferred phonetic collection 230 of same database.
IV, the dictionary 240 that needs checking, the same with dictionary 210 also is the disyllabic word table that can retrieve according to phonetic, is used for the storage speech that needs checking.
The speech that needs checking produces by the 1/M of picked at random according to the preferred phonetic retrieval dictionary 210 gained candidate word in the preferred phonetic collection 230, and wherein M is not less than 1 integer.The value of M is an empirical value, needs inspection rope gained candidate word number and decides, and general the most frequently used value is that M equals 3.
Need checking the primary data of dictionary 240 for empty.Along with the operation of automatic proposition system, the data of storage will constantly increase in the dictionary 240 that needs checking.This is because in automatic proposition system operational process, the speech that needs checking that every generation is once new, and the speech that just this need be needed checking replenishes and deposits in the dictionary 240 that needs checking.
(c) preferred phonetic collection is set up module 300, is used to associating dictionary 210 and phonetic collection 220 newly-built preferred phonetic collection.And the step of newly-built preferred phonetic collection has: at first, calculate the sub-preferred number of dictionary and the phonetic collected works preferred number of phonetic respectively; Then, calculate the preferred number of phonetic; At last, select the highest preceding 1/5 the covering as new preferred phonetic and to be stored in preferred phonetic collection 230 of preferred number in the phonetic.
(d) the speech generation module 400 that needs checking is used to associating dictionary 210 and produces with preferred phonetic collection 230 and need checking speech and upgrade need checking dictionary 240, dictionary 210 and phonetic collection 220.And the step that produces the speech that needs checking has: at first, be that indexed search dictionary 210 obtains candidate word with the preferred phonetic in the preferred phonetic collection 230; Subsequently, 1/3 of the picked at random candidate word as needing checking speech; At last, this speech that needs checking replenished store in the dictionary 240 that needs checking, delete this speech that needs checking in the dictionary 210 simultaneously, and deduct the phonetic demand of this speech contribution that needs checking in the phonetic collection 220.
(e) proposition module 500 is used to judge whether the proposition task is finished, and also promptly is stored in the speech that needs checking in the dictionary 240 that needs checking and whether satisfies proposition and require 100, is then to carry out to empty the dictionary 240 that needs checking after setting a question, otherwise continues proposition.
Then, please refer to Fig. 2, the disclosed automatic proposition method flow diagram that is used for speech evaluating is described.Before proposition begins automatically, need require the primary data of 100 setting dictionaries 210 and phonetic collection 220 according to proposition.Carry out after the above-mentioned preparation, start the disclosed automatic proposition system that is used for speech evaluating and begin automatic proposition:
At first, execution in step 600, associating dictionary 210 and phonetic collection 220 newly-built preferred phonetic collection 230.This step 600 comprises 4 sub-steps again: at first, calculate the sub-preferred number of dictionary of phonetic and the phonetic collected works preferred number of phonetic respectively, wherein, the sub-preferred number of the dictionary of a phonetic equals 1 and subtracts the frequency of occurrences of this phonetic in dictionary 210, the phonetic collected works preferred number of a phonetic equals the demand ratio of this phonetic in phonetic collection 220, and this two sub-steps is respectively step 610 and step 620; Then, above-mentioned two sub-preferred number additions are got the preferred number of phonetic, this is a step 630; At last, phonetic is sorted from high to low by preferred number, select the highest preceding 1/5 the covering as new preferred phonetic and to store in the preferred phonetic collection 230 of preferred number in the phonetic, this is a step 640.
Then, execution in step 700 after the completing steps 600, associating dictionary 210 and preferred phonetic collection 230 produce the speech and according to this speech renewal that needs checking need checking dictionary 240, dictionary 210 and phonetic collection 220 of needing checking at random.This step 700 comprises 3 sub-steps again: at first, be indexed search dictionary 210 with the preferred phonetic in the preferred phonetic collection 230, obtain candidate word, this is a step 710; Subsequently, 1/3 in the picked at random candidate word is as needing checking speech, and this is a step 720; At last, this speech that needs checking replenished store in the dictionary 240 that needs checking, delete this speech that needs checking in the dictionary 210 simultaneously, and deduct the phonetic demand of this speech contribution that needs checking in the phonetic collection 220, this is a step 730.
At last, execution in step 800 after the completing steps 700 judges whether the proposition task is finished, and judges just whether the speech of storing in the dictionary 240 that needs checking that needs checking satisfies proposition and require 100.This need statistics at first need checking the speech that needs checking of storage in the dictionary 240 phonetic kind, quantity, and distribute, require the relevant regulations in 100 to compare statistics and proposition then.Contrast is satisfied and to be thought that then the proposition task finishes, and execution in step 900 empties the dictionary that needs checking after the speech of storing in the dictionary that needs checking that needs checking ordered out as examination paper; Contrast is not satisfied, and thinks that then the proposition task also do not finish, and need repeat above-mentioned flow process, and promptly execution in step 600, step 700 and step 800 continue proposition successively.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention.
Claims (21)
1, a kind of automatic proposition system that is used for speech evaluating can require according to the proposition of speech evaluating to provide unduplicated examination paper at different time, it is characterized in that including:
-database includes:
-dictionary is used for storage proposition available words;
-phonetic collection is used for storage proposition phonetic demand;
-preferred phonetic collection is used to store preferred phonetic; And
-the dictionary that needs checking is used for storing the speech that needs checking;
-preferred phonetic is set up module, is used to the newly-built preferred phonetic collection of associating dictionary and phonetic collection;
-speech the generation module that needs checking is used to the associating dictionary and produces the speech that needs checking at random with preferred phonetic collection, and upgrades need checking dictionary, dictionary and phonetic collection according to this speech that needs checking; And
-proposition module is used to judge whether the proposition task is finished, and whether the speech of storing in the dictionary that also promptly needs checking that needs checking satisfies the proposition requirement, is then to carry out to empty the dictionary that needs checking after setting a question, otherwise continues proposition.
2, the automatic proposition system that is used for speech evaluating as claimed in claim 1 is characterized in that the primary data of described dictionary and phonetic collection is required to set according to proposition by the user, and the primary data of the described dictionary that needs checking is for empty.
3, as claim 1, the 2 described automatic proposition systems that are used for speech evaluating, it is characterized in that described dictionary and the described dictionary that needs checking are respectively the vocabulary that can retrieve according to phonetic, described proposition available words and the described speech that needs checking are the speech that comprises in the corresponding vocabulary.
4, the automatic proposition system that is used for speech evaluating as claimed in claim 3 is characterized in that the speech that comprises in the described vocabulary has phonetic and tonal properties field.
5, the automatic proposition system that is used for speech evaluating as claimed in claim 1 is characterized in that described proposition phonetic demand has the quantity required of phonetic, phonetic and the attribute fields such as preferred number of phonetic.
6, the automatic proposition system that is used for speech evaluating as claimed in claim 5 is characterized in that described preferred number is the weighted sum of sub-preferred number of dictionary and phonetic collected works preferred number.
7, the automatic proposition system that is used for speech evaluating as claimed in claim 6, it is characterized in that the sub-preferred number of described dictionary is meant the preferred number of phonetic in dictionary, its computation rule is that phonetic occurrence number in dictionary is few more preferential more, and its computing method are that the sub-preferred number of the dictionary of a phonetic equals 1 and subtracts the frequency of occurrences of this phonetic in dictionary.
8, the automatic proposition system that is used for speech evaluating as claimed in claim 6, it is characterized in that described phonetic collected works preferred number is meant the preferred number that phonetic is concentrated at phonetic, its computation rule is that phonetic concentrates quantity required many more preferential more at phonetic, and its computing method are that the phonetic collected works preferred number of a phonetic equals the demand ratio that this phonetic is concentrated at phonetic.
9, the automatic proposition system that is used for speech evaluating as claimed in claim 1 is characterized in that described preferred phonetic is to have the phonetic of high preferred number.
10, a kind of automatic proposition method that is used for speech evaluating as the described automatic proposition system that is used for speech evaluating of claim 1 to 9 of utilizing, can require according to the proposition of speech evaluating to provide unduplicated examination paper, it is characterized in that this method includes step at different time:
1, sets up preferred phonetic collection;
2, produce the speech that needs checking at random and also upgrade need checking dictionary, dictionary and phonetic collection;
3, judge whether the proposition task is finished, be then to carry out to empty the dictionary that needs checking after setting a question, otherwise repeat above-mentioned 1,2,3 steps.
11, the described automatic proposition method that is used for speech evaluating of claim 10 is characterized in that described step " 1, set up preferred phonetic collection " includes substep:
11, calculate the sub-preferred number of dictionary of phonetic;
12, calculate the phonetic collected works preferred number of phonetic;
13, calculate the preferred number of phonetic;
14, phonetic is sorted by preferred number, select the highest newly-built preferred phonetic collection of preceding 1/N of preferred number in the phonetic, wherein N is not less than 1 integer.
12, the automatic proposition method that is used for speech evaluating as claimed in claim 10 is characterized in that described step " 2, at random produce to need checking speech and to upgrade need checking dictionary, dictionary and phonetic collection " includes substep:
21, the preferred phonetic of concentrating with preferred phonetic obtains candidate word as the indexed search dictionary;
22, the 1/M that selects candidate word at random is as needing checking speech, and wherein M is not less than 1 integer;
23, this is needed checking speech deposits the dictionary that needs checking in, deletes this speech that needs checking in the dictionary simultaneously, and deducts the phonetic demand that phonetic is concentrated this speech contribution that needs checking.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106909682A (en) * | 2017-03-03 | 2017-06-30 | 盐城工学院 | Test library design method and system |
| CN110516232A (en) * | 2019-07-22 | 2019-11-29 | 北京师范大学 | A kind of automatic proposition method and system for Chinese evaluation and test |
| CN110930793A (en) * | 2018-09-20 | 2020-03-27 | 大连大学 | College student acceptor assessment method |
-
2006
- 2006-05-15 CN CN 200610080413 patent/CN101075232A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106909682A (en) * | 2017-03-03 | 2017-06-30 | 盐城工学院 | Test library design method and system |
| CN110930793A (en) * | 2018-09-20 | 2020-03-27 | 大连大学 | College student acceptor assessment method |
| CN110516232A (en) * | 2019-07-22 | 2019-11-29 | 北京师范大学 | A kind of automatic proposition method and system for Chinese evaluation and test |
| CN110516232B (en) * | 2019-07-22 | 2021-06-22 | 北京师范大学 | Automatic proposition method and system for Chinese evaluation |
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