JP7187863B2 - Entries analyzer and program - Google Patents

Description

TECHNICAL FIELD The present invention relates to a technology for assisting correction and scoring of answers written on an answer sheet or the like.

A distance learning system is known in which a school is connected to a teacher at a remote location through a network, and video and audio are transmitted for teaching. An example of such a remote teaching system is described in Patent Document 1.

JP-A-2005-338510

In recent years, there are more and more opportunities to evaluate students' abilities by written tests in educational settings, such as the adoption of essay tests in college entrance examinations. A problem in this case is that as the number of students increases, the time required for correction and grading becomes enormous.

SUMMARY OF THE INVENTION The main object of the present invention is to provide an entry content analysis apparatus that enables users such as students to efficiently correct and grade answers.

In one aspect of the present invention, an entry content analysis device includes receiving means for receiving entry data indicating entry content entered by an entry device in an entry medium provided with a plurality of entry columns ; Using a blank period detection means for detecting blank periods and a reference time different for each entry column, the blank period longer than the reference time is set as a section of entry items, and the sectioned entry content is divided into 1 sections. entry item number determination means for determining the number of entry items included in the entry content by detecting one entry item .

The entry content analysis apparatus described above receives entry data indicating entry contents entered by an entry device into an entry medium provided with a plurality of entry columns , and detects blank periods in the entry data. At this time, the entry content analyzer can appropriately detect the non-entry period by using a predetermined reference time. In a preferred example, the number-of-entry-items determination means uses a different reference time for each of the entry fields. Then, the entry content analysis device divides the entry items by the non-entry period longer than the reference time, and detects the separated entry content portion as one entry item, thereby determining the entry items included in the entry content. Determine the number of Preferably, the number-of-entry-items determination means determines the number of entries by referring to the positional relationship before and after the blank period. By providing the number of entries, corrections by teachers and the like can be streamlined.

In one aspect of the entry content analysis device, the number-of-entry-items determination means determines the number of entries for each of the entry fields. In this aspect, the number of entry items can be determined separately for each entry field.

In another aspect of the entry content analyzer, when the length, angle, and position of the line segment included in the entry data satisfy predetermined conditions, entry in the entry field overlapping the line segment is performed. A deletion means for deleting data is provided. In this aspect, it is possible to detect a deletion line intentionally entered by the user.

In another aspect of the entry content analyzer, the line segment included in the entry data spans a plurality of entry fields, and at least one of the length, angle, and position of the line segment satisfies a predetermined condition. and an association determining means for determining that the entries described at the positions of both ends of the line segment are associated. In this aspect, it is possible to detect association lines intentionally entered by the user.

In another aspect of the present invention, a program executed by an entry content analysis device provided with a computer receives entry data indicating entry content entered by an entry device in an entry medium provided with a plurality of entry fields . Receiving means, blank period detecting means for detecting blank periods in the entry data , and reference times different for each of the entry fields are used to set blank periods longer than the reference time as delimiters of entry items. By detecting the portion of the entry content as one entry item, the computer is caused to function as entry-item number determination means for determining the number of entry items included in the entry content. By executing this program on a computer, it is possible to realize the entry content analysis device described above.

1 shows the configuration of a remote teaching system according to an embodiment; It is a block diagram which shows the internal structure of a management server. An example of an answer sheet with student answers is shown. Indicates the entry on the answer sheet. It is a flow chart of the entry number determination processing. An example of an answer image displayed on the teacher's terminal is shown. An example of a crossed-out slash written on an answer sheet is shown. Shows an example of a linking line entered on an answer sheet. The configuration of a remote teaching system according to a modification is shown.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[overall structure]
FIG. 1 shows the configuration of a remote teaching system to which the present invention is applied. A distance learning system 100 is configured such that an entry device 10 and a connection device 12 provided on the student side (school), a management server 20, and a teacher terminal 30 provided on the teacher side can communicate with each other via a network 5. is.

On the student side, a writing device 10 and a connecting device 12 are provided for use by each student. The writing device 10 is a digital pen 10a or a combination of a tablet 10b and a touch pen 10c. That is, when a student conducts a test or exercises, he/she writes answers on an answer sheet 50, which is a dedicated paper, using the digital pen 10a, or writes answers on a tablet 10b with a touch pen 10c. The answer sheet 50 and tablet 10b are examples of the writing medium of the present invention. In the following description, simply referring to the "writing device 10" includes both the digital pen 10a and the combination of the tablet 10b and the touch pen 10c. For convenience, only one digital pen 10a, one tablet 10b, and one touch pen 10c are shown in FIG. used.

The connection device 12 is a communication terminal for transmitting data received from the entry device 10 to the outside. The connection device 12 is, for example, a PC, a smartphone, or the like, and receives entry data D1 from the entry device 10 . Communication between writing device 10 and connecting device 12 may be wireless or wired. In this embodiment, the entry data D1 is answer information input by the student using the digital pen 10a or a combination of the tablet 10b and the touch pen 10c. The connection device 12 transmits the received entry data D<b>1 to the management server 20 through the network 5 . Communication between the connection device 12 and the management server 20 via the network 5 may be wired or wireless.

The management server 20 is connected to a test information database (hereinafter "database" will be referred to as "DB") 24 and a test result DB 28. FIG. The management server 20 receives entry data D1 of each student from the student-side connection device 12, and determines the entry content of each student. Specifically, the management server 20 determines the number of entry items included in the entry content entered on the answer sheet 50 . Then, the management server 20 adds the determined number of entry items to the image of the answer sheet in which the student has written the answers, and transmits it to the teacher's terminal 30 via the network 5 as display data D2 of the answer image. Communication between the management server 20 and the teacher's terminal 30 through the network 5 may be wired or wireless.

The teacher's terminal 30 provided on the teacher's side is, for example, a desktop PC, a laptop PC, a tablet PC, or the like. When the teacher's terminal 30 is a tablet PC, the teacher may be provided with a communication terminal such as the connection device 12 provided on the student's side. The teacher's terminal 30 has a display such as a liquid crystal display. The teacher's terminal 30 receives the display data D2 from the management server 20 and displays the answer image on the display section of the teacher's terminal 30 .

[Management server configuration]
FIG. 2 is a block diagram showing the internal configuration of the management server 20. As shown in FIG. The management server 20 includes a communication section 21 , a stroke extraction section 22 , a blank period detection section 23 , an entry number determination section 25 , a correction section 26 and a control section 27 . Note that these components, the aforementioned test information DB 24 and test result DB 28 are interconnected via a bus 29 .

The communication unit 21 is a communication unit for communicating with the connection device 12 on the student side and the teacher terminal 30 on the teacher side through the network 5 . The stroke extraction unit 22 extracts strokes written by the student from the entry data D1 received by the communication unit 21 from the connection device 12 on the student side.

The test information DB 24 stores test information, which is information about tests to be conducted by students. The test in this embodiment is, for example, a test for practice or effect confirmation conducted during class, and is composed of descriptive questions. The test information includes test question information, correct answer information, answer sheet information, and the like. The answer sheet information includes positional coordinate information indicating positions on the answer sheet of a plurality of entry fields provided on the answer sheet.

The test result DB 28 stores test result information including answers to tests conducted by each student and analysis results thereof. The test result DB 28 stores test result information for each test execution date. Specifically, the test result information includes the answers written by each student, the analysis results, the ranking of the students in the test (class ranking, grade ranking, overall ranking, etc.), and the writing status of the answers given by the students. Contains information (eg, total entry time, stop time, description character size, transition of entry fields, etc.). The test result DB 28 also stores test result information about tests that have been performed in the past.

The blank period detector 23 detects blank periods included in the entry data D1. Answers to descriptive questions are usually entered in units of entries (hereinafter referred to as "entry items") having a single content. For this reason, it is common that a certain amount of time is required for a student to mentally think about and organize the contents before filling in the next entry after filling in one entry. In other words, there is often a certain length of non-entry period, that is, a period in which no entries are made, before starting the entry of the next entry after one entry is entered. The blank period detection unit 23 detects blank periods included in the entry data D1, that is, periods in which no entry is made, as delimiters of entry items. Specifically, the entry data D1 transmitted from the entry device 10 includes position information and time information entered with the digital pen 10a or the touch pen 10b. Therefore, the blank period detection unit 23 refers to the position information and the time information included in the entry data D1, and determines that the writing medium is the digital pen 10a or the touch pen 10c during the period in which writing is not performed. The time during which the answer sheet 50 or the touch panel of the tablet 10b is not touched may be detected as the blank period.

The number-of-entry-items determination unit 25 determines the number of entry items included in the entry content indicated by the entry data D1 based on the blank period detected by the blank period detection unit 23 . As described above, the non-entry period serves as a separator between a plurality of entry items, so a block of entry contents separated by the non-entry period is determined to be one entry.

A correction unit 26 recognizes the answer written by the student based on the strokes extracted by the stroke extraction unit 22, and corrects the answer by collating it with the correct answer information stored in the test information DB 24. - 特許庁Further, the correction unit 26 may perform scoring based on rules prepared in advance based on the number of entries determined by the number-of-entry determination unit 25 .

The control unit 27 extracts the entry data D1 received by the communication unit 21 (that is, the image data of the answer written by the student) or the stroke extraction unit 22 extracts the image data of the answer sheet stored in the test information DB 24. Create an answer image by compositing the stroke data. In addition, the control unit 27 synthesizes the number of entries determined by the number-of-entry determination unit 25, the correction result by the correction unit 26, and the like on the answer image. Then, the control section 27 transmits the created answer image to the teacher terminal 30 through the communication section 21 . This allows the teacher to display the answer image on the teacher's terminal 30 .

In the above configuration, the communication unit 21 is an example of the receiving means of the present invention, the blank period detection unit 23 is an example of the blank period detection unit of the present invention, and the entry number determination unit 25 is an example of the entry unit of the present invention. It is an example of the number-of-items determination means.

[Determination of the number of entries]
(Method for judging the number of entries)
Next, a method for determining the number of entry items will be described in detail. FIG. 3 shows an example of an answer sheet 50 after answers have been entered by the student. The answer sheet 50 includes a name entry field 51 and an answer entry field 52 . In the example of FIG. 3, the answer entry column 52 is composed of four entry columns of "opinion", "basis", "example", and "summary". Specifically, the "opinion" entry field (also referred to as "entry field A") consists of one entry field A1, and the "reason" entry field (also referred to as "entry field B") consists of two entries. It consists of columns B1 and B2. The "case" entry field (also called "entry field C") consists of two entry fields C1 and C2, and the "summary" entry field (also called "entry field D") consists of four entry fields D1. ∼ D4. In FIG. 3, for convenience of explanation, symbols A1, B1 to B2, C1 to C2, and D1 to D4 are shown to indicate the respective entry fields. ) is not printed.

In this example, students are required to describe each item of opinions, grounds, examples, and conclusions in relation to each other. In the answer sheet 50 illustrated in FIG. 3, the student first enters two opinions, "should use" and "should not use" in the entry column A1. In addition, two grounds are entered in the entry field B1 in association with the opinion "should be used", and two grounds are entered in the entry field B2 in association with the opinion "should not be used". . Furthermore, three cases are entered in the entry column C1 in association with the grounds entered in the entry column B1, and a summary is entered in the entry columns D1 and D2 in association with these cases. Similarly, two examples are entered in entry column C2 in association with the grounds entered in entry column B2, and a summary is entered in entry columns D3 and D4 in association with those cases.

FIG. 4 shows entries in the example answer sheet of FIG. Each entry 61 indicated by a dashed line is an individual grouping of items entered in each entry column. Specifically, each of the opinion “should be used” and the opinion “should not be used” entered in the entry field A1 corresponds to one entry item 61 . In addition, the two grounds entered in the entry field B1, the two grounds entered in the entry field B2, the three cases entered in the entry field C1, and the two cases entered in the entry field C2 are each one. corresponding to one entry 61. Furthermore, each of the summaries entered in the entry fields D1 to D4 corresponds to one entry item 61. FIG.

Normally, when correcting answers to descriptive questions, it is often the case that the number of entries is counted as well as the content of entries is examined. For example, points are assigned to each entry item, and points are added when the required number of entry items is entered. Therefore, in this embodiment, the number of items to be entered in each entry field as shown in FIG. 3 is determined based on the entry data D1, thereby assisting the teacher's correction work. Specifically, first, the entry time data included in the entry data D1 is referenced to detect a non-entry period. Then, the entry content is divided into a plurality of entry items by using a non-entry period longer than a predetermined reference time as a delimiter of the entry items. Thereby, the number of entry items included in the entry data can be determined.

FIG. 4 conceptually shows the blank period 62 . In the example of FIG. 4, there is a blank period 62 between the entry of the opinion "Should be used" and the entry of the opinion "Should not be used" in the entry column A1. Also in the entry columns B1 and B2, there is a blank period 62 from when one ground is entered until when the second ground is entered. The same applies to entry fields C1 to C2 and D1 to D4. There is also a non-entry period 62 when moving entry fields. Therefore, by dividing the entry data D1 by blank periods longer than a predetermined reference time, the entire entry content is divided into a plurality of entry items, and the positional relationship before and after the blank periods is referred to. It becomes possible to determine the number of entries.

(Adjustment of reference time)
As described above, the blank period detector 23 detects blank periods longer than a predetermined reference time. Here, first, the reference time is the non-entry period that occurs when a student with standard academic ability fills in each entry by analyzing the entry data of multiple students, that is, the entry of one entry. Preferably, this is determined by calculating the amount of time it takes to complete and start filling in the next entry.

Moreover, it is preferable to adjust the reference time as necessary. As a first method, the reference time may be changed for each entry column of the answer sheet. For example, in the example of the answer sheet shown in FIG. 3, the amount to be filled in in the opinion entry column A is small, and it is preferable for the students to fill in as quickly as possible, so the reference time is shortened. On the other hand, the case entry column B has a relatively large amount of information to be filled in, and it is preferable that the students should carefully consider and fill it out.

As a second method, the reference time may be adjusted according to the student taking the test, the class, or the academic level of the school. For example, if the academic level of a student, class, or school is high, the reference time is shortened, and if the academic level is low, the reference time is lengthened.

As a third method, the reference time may be adjusted according to the difficulty of the test questions. For example, a difficulty level is set for each question, and the reference time is adjusted according to the difficulty level. Specifically, the difficulty level of each question is divided into three categories: "high", "standard", and "low". For questions of degree, the reference time may be shorter than for questions of standard difficulty.

[Correction support processing]
Next, correction support processing will be described. FIG. 5 is a flowchart of correction support processing. This processing is executed by the management server 20 executing a program prepared in advance and functioning as each component shown in FIG.

First, the management server 20 receives entry data D1 for the answer sheet from the student's entry device 10 through the communication unit 21 (step S10). Next, the management server 20 extracts strokes from the entry data D1 by the stroke extraction unit 22 (step S11).

Next, the management server 20 detects the blank period included in the entry data D1 by the blank period detector 23 (step S12). Specifically, the management server 20 extracts a blank period longer than a predetermined reference time.

Next, the management server 20 determines the number of entry items by the entry number determination unit 25 (step S13). Specifically, as conceptually shown in FIG. 4, the management server 20 specifies individual entry items 61 by dividing the entry data D1 at the positions of the detected blank periods 62, and counts the number of entries. number of entries.

Next, the management server 20 performs necessary correction/scoring by the correction unit 26 (step S14). For example, the correction unit 26 obtains the answer written by the student by character recognition or the like based on the strokes extracted in step S11, and corrects the answer by referring to the correct answer information. More specifically, keywords to be filled in by the student are determined in advance as the correct answer information, and points are added when the keyword is included in the answer written by the student.

Further, the correction unit 26 may perform scoring based on rules prepared in advance based on the number of entries determined by the number-of-entry determination unit 25 . For example, the number of entry items to be filled in for each entry column and the allocation of points may be determined in advance, and scoring may be performed based on the number of entry items entered in each entry column.

Next, the management server 20 generates an answer image using the control unit 27 and transmits it to the teacher terminal 30 (step S15). Specifically, the control unit 27 synthesizes the image data of the answer sheet stored in the test information DB 24 with the image data of the answer written by the student or the stroke data extracted by the stroke extraction unit 22 to obtain an answer. Create an image. Then, the control unit 27 generates an answer image by synthesizing the number of entry items determined in step S13, correction results by the correction unit 26, etc. on the answer image, and transmits the answer image to the teacher terminal 30. This allows the teacher to display the answer image on the teacher's terminal 30 . Thus, the correction support processing ends.

FIG. 6 shows a display example of an answer image on the teacher's terminal 30. As shown in FIG. In this example, the detected entry number 64 is shown for each entry column of the answer image. This allows the teacher to recognize at a glance how many entry items have been entered in each entry area. In another example, instead of displaying the number of entries in the answer image as shown in FIG. 6, the results of automatic scoring based on the number of entries may be displayed in the answer image.

[Line detection processing]
Next, the process of detecting oblique lines and lines (hereinafter collectively referred to as "line segments") written on the answer sheet will be described. A line segment having a specific meaning may be written on the answer sheet, and if the intention of the student is clear, it is convenient to detect the line segment and reflect the intention. Usually, as line segments to be written on the answer sheet, a strike-through line and a linking line are assumed.

(strikethrough)
A strike-through line is a line intended to cancel (cancel) items that have already been entered. FIG. 7 shows an example of an answer sheet with a strike-through line. A strike-through line 53 is entered in an area 54 spanning entry fields B2 and C2. As exemplified in FIG. 7, a strike-through line is generally drawn diagonally from upper left to lower right over substantially the entire area to be crossed out. Therefore, for example, a combination of conditions 1 and 2 or a combination of conditions 1 and 3 below can detect strikethrough lines.
Condition 1: The entered line segment has a length corresponding to the diagonal line of one entry field or a plurality of adjacent entry fields.
Condition 2: The filled line segment has an angle corresponding to the diagonal line of one entry field or a plurality of adjacent entry fields.
Condition 3: The entered line segment passes through the vicinity of the diagonal position of a rectangular area composed of one entry field or a plurality of adjacent entry fields.

Since the positional coordinates of each entry column provided on the answer sheet are stored in the test information DB 24 as answer sheet information, the control section 27 can refer to them to determine the above conditions. When the control unit 27 determines that the line segment included in the entry data D1 corresponds to a strikethrough line, it invalidates the entry content in the entry column designated by the strikethrough line. As a result, the student can efficiently cancel part of the items that have already been filled out in units of entry fields. In this case, the control unit 27 is an example of deletion means of the present invention.

(association line)
An association line is a line that indicates that items entered in a plurality of entry fields are related to each other. FIG. 8 shows an example of an answer sheet in which association lines are entered. A linking line 55 is entered so as to connect the entry items of the entry column B1 and the entry items of the entry column C1 indicated by the dashed line 56 . As illustrated in FIG. 8, the association line is generally entered across multiple entry fields. In addition, usually, the relation line drawn between adjacent entry fields is characterized by being short compared to the size of the entry fields. In addition, as in the example of FIG. 8, on an answer sheet in which multiple entry fields are arranged side by side, the relation lines are often written in a horizontal or near-horizontal diagonal direction. On the answer sheets arranged in a direction, the relation lines are often written in a straight line or an oblique direction close to the vertical. Therefore, for example, a strike-through can be detected by condition 4 or a combination of conditions 4 and 5 below.
Condition 4: A line segment spans multiple adjacent entry fields, and the length of the line segment is shorter than the size (vertical or horizontal length) of the entry field.
Condition 5: The direction of the line segment is close to the direction in which the multiple entry columns are arranged on the answer sheet.

If the control unit 27 determines that the line segment included in the entry data D1 corresponds to the association line, it may determine that the entry items entered in the vicinity of both ends of the association line are associated. As a result, for example, if points are assigned to associations between specific entries for scoring, scores can be automatically calculated based on the presence or absence of association lines. In this case, the control unit 27 is an example of association determining means of the present invention.

[Modification]
(Modification 1)
In the above embodiment, the number of entry items is determined based on the blank periods detected by the blank period detection unit 23. In addition, the correction unit 26 performs correction based on the blank periods detected. and advice. For example, if the blank period is too long, the evaluation may be lowered. Also, in the case of exercises in class rather than formal tests, if the blank period is longer than a predetermined time, it may be assumed that the student's thinking has stopped, and advice may be displayed. .

(Modification 2)
Although the management server 20 and the teacher's terminal 30 are provided independently in the above embodiment, the functions of the management server 20 may be included in the teacher's terminal 30 instead. FIG. 9 shows a configuration example of the remote teaching system 100x in this case. As shown in the figure, the configuration on the student side is the same as in FIG. A test information DB 34 and a test result DB 38 are connected to the teacher's terminal 30, and the teacher's terminal 30 may perform the processing performed by the management server 20 in the above embodiment instead. In this case, the teacher's terminal 30 is an example of the receiving means, blank period detecting means, number-of-entry-items determining means, deleting means, and association determining means of the present invention.

5 network 10 entry device 11a digital pen 11b tablet 11c touch pen 12 connection device 20 management server 30 teacher terminal 50 answer sheet 100, 100x distance learning system

Claims (6)

Receiving means for receiving entry data indicating entry contents entered by an entry device into an entry medium provided with a plurality of entry fields ;
blank period detection means for detecting blank periods in the entry data;
By using a different reference time for each of the entry fields, a part of the blank period longer than the reference time is used as a section of the entry item, and the separated part of the entry content is detected as one entry item . entry number determination means for determining the number of entries included;
An entry content analysis device comprising: 2. The entry content analysis apparatus according to claim 1, wherein said entry number determining means judges the number of entry items by referring to the positional relationship before and after said blank period. 3. The entry content analysis apparatus according to claim 1, wherein said entry number determination means determines the number of entry items for each entry column. The method is characterized by comprising deleting means for deleting entry data in entry fields overlapping with the line segment when the length, angle and position of the line segment included in the entry data satisfy predetermined conditions. 4. The entry content analyzer according to any one of claims 1 to 3 . When a line segment included in the entry data spans a plurality of entry fields and at least one of the length, angle and position of the line segment satisfies a predetermined condition, both ends of the line segment 5. The entry content analysis apparatus according to claim 1 , further comprising association determination means for determining that the entry items described in the positions are associated with each other. A program executed by an entry analysis device comprising a computer,
Receiving means for receiving entry data indicating entry contents entered by an entry device in an entry medium provided with a plurality of entry fields ;
blank period detection means for detecting blank periods in the entry data;
By using a different reference time for each of the entry fields, a part of the blank period longer than the reference time is used as a section of the entry item, and the separated part of the entry content is detected as one entry item . entry number determination means for determining the number of entries included;
A program characterized by causing the computer to function as

Images