JP2020016683A - Entry content analyzer and program - Google Patents

Abstract

To provide an entry content analyzer capable of efficiently correcting and scoring answers given by users such as students.SOLUTION: An entry content analyzer provided herein is configured to receive entry data representing entry content entered on an entry medium using an entry device, detect no-entry periods in the entry data, and determine the number of entry items included in the entry content on the basis of the no-entry periods.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a technique for supporting correction and scoring of an answer entered on an answer sheet or the like.

  2. Description of the Related Art A remote lesson system that connects a school to a teacher located away from the school via a network and transmits images and sounds to give a lesson is known. An example of such a remote lesson system is described in Patent Document 1.

JP 2005-338510 A

  In recent years, there has been an increasing number of opportunities to evaluate students' abilities using a written test in educational settings, such as the adoption of an essay test in university entrance examinations. The problem in this case is that the time required for correction and scoring increases as the number of students increases.

  SUMMARY OF THE INVENTION It is a main object of the present invention to provide an entry analysis device capable of efficiently correcting and scoring answers by a user such as a student.

  According to one aspect of the present invention, an entry content analysis device includes a receiving unit that receives entry data indicating an entry content entered by an entry device on an entry medium, and a blank entry that detects a blank entry period in the entry data. There is provided a period detection unit, and an entry item number determination unit that determines the number of entry items included in the entry based on the non-entry period.

  The above-mentioned entry content analyzer receives entry data indicating the entry content entered into the entry medium by the entry device, and detects a non-entry period in the entry data. Then, the number of entry items included in the entry content is determined based on the no entry period. Preferably, the number-of-entry-items determining means determines the number of entry items by referring to the positional relationship before and after the non-entry period. Providing the number of entries allows for efficient correction by teachers and the like.

  In one aspect of the entry content analyzer, the entry medium is provided with a plurality of entry columns, and the entry item number determination means determines the number of entry items for each entry column. In this aspect, the number of entry items can be determined for each entry column.

  In another aspect of the entry content analyzer, the entry number determination means detects a portion of a non-entry period longer than a reference time as a break of the entry item, and determines the number of entry items. In this aspect, the blank period can be appropriately detected by using a predetermined reference time.

  In a preferred example, the entry item number determination means uses a different reference time for each entry column. In another preferred example, the entry item number determination means uses a different reference time for each user. In still another preferred example, the entry medium is a medium on which an answer to the question is entered, and the entry item number determination means uses a different reference time according to the difficulty of the question.

  In another aspect of the entry content analyzer, the entry medium is provided with a plurality of entry columns, and the length, angle, and position of the line segment included in the entry data satisfy predetermined conditions. In this case, there is provided a deletion unit for deleting entry data in an entry column overlapping the line segment. In this aspect, it is possible to detect a deletion line intentionally entered by the user.

  In another aspect of the above-described entry content analyzer, the entry medium is provided with a plurality of entry columns, and a line segment included in the entry data extends over the plurality of entry columns. When at least one of the length, angle, and position of the segment satisfies a predetermined condition, an association determining unit that determines that entries described at both ends of the line segment are associated. In this aspect, the association line intentionally entered by the user can be detected.

  According to another aspect of the present invention, a program executed by an entry content analysis device including a computer is a receiving unit that receives entry data indicating entry content entered by an entry device on an entry medium, The computer is caused to function as a non-entry period detecting means for detecting an entry period, and an entry item number judging means for judging the number of entry items included in the entry contents based on the non-entry period. By executing this program on a computer, the above-mentioned content analysis device can be realized.

1 shows a configuration of a remote lesson system according to an embodiment. FIG. 3 is a block diagram illustrating an internal configuration of a management server. Here is an example of an answer sheet on which students' answers have been entered. Indicates the entry items on the answer sheet. It is a flowchart of an entry item number determination process. 5 shows an example of an answer image displayed on the teacher terminal. An example of the cancellation diagonal line written on the answer sheet is shown. An example of the association line entered on the answer sheet is shown. 9 shows a configuration of a remote lesson system according to a modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[overall structure]
FIG. 1 shows a configuration of a remote lesson system to which the present invention is applied. The remote lesson system 100 is configured such that the writing device 10 and the connection device 12 provided on the student side (school), the management server 20, and the teacher terminal 30 provided on the teacher side can communicate with each other via the network 5. It is.

  On the student side, a writing device 10 used by each student and a connection device 12 are provided. The writing device 10 is a digital pen 10a or a combination of a tablet 10b and a touch pen 10c. That is, when performing a test or an exercise, the student uses the digital pen 10a to write an answer on the answer sheet 50, which is a dedicated paper, or writes an answer on the tablet 10b with the touch pen 10c. The answer sheet 50 and the tablet 10b are examples of the entry medium of the present invention. In the following description, the term “writing device 10” includes both the digital pen 10a and the combination of the tablet 10b and the touch pen 10c. In FIG. 1, only one digital pen 10a, one tablet 10b, and one touch pen 10c are shown for convenience. However, in actuality, digital pens 10a or tablets 10b and touch pens 10c corresponding to the number of students are provided. used.

  The connection device 12 is a communication terminal for transmitting data received from the writing device 10 to the outside. The connection device 12 is, for example, a PC or a smartphone, and receives the entry data D1 from the entry device 10. Communication between the writing device 10 and the connection device 12 may be wireless or wired. In the present 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 D1 to the management server 20 via the network 5. The 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” is referred to as “DB”) 24 and a test result DB 28. The management server 20 receives the entry data D1 of each student from the connection device 12 on the student side, 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 in the answer sheet 50. Then, the management server 20 adds the determined number of entries to the image of the answer sheet in which the student has entered the answer, and transmits the result as the answer image display data D2 to the teacher terminal 30 via the network 5. Communication between the management server 20 and the teacher terminal 30 via the network 5 may be wired or wireless.

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

[Management server configuration]
FIG. 2 is a block diagram showing the internal configuration of the management server 20. The management server 20 includes a communication unit 21, a stroke extraction unit 22, a non-entry period detection unit 23, an entry item number determination unit 25, a correction unit 26, and a control unit 27. These components and the above-described test information DB 24 and test result DB 28 are mutually connected 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 via the network 5. The stroke extraction unit 22 extracts a stroke 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 that is information on a test to be performed by a student. The test in the present embodiment is, for example, a test performed during a class for exercises and effect confirmation, and is configured by a description problem. The test information includes test question information, correct answer information, answer sheet information, and the like. The answer sheet information includes position coordinate information indicating positions of a plurality of entry fields provided on the answer sheet on the answer sheet.

  The test result DB 28 stores test result information including answers of tests performed by each student and analysis results thereof. The test result DB 28 stores test result information for each test execution date and time. Specifically, the test result information includes, for one test, the answers described by the students, the analysis results, the ranks of the students in the test (class rank, grade rank, overall rank, etc.), and the description status of the answers by the students. Information (for example, total entry time, stop time, description character amount, transition of entry columns, etc.). Further, the test result DB 28 also stores test result information on a test performed in the past.

  The blank entry period detecting section 23 detects a blank entry period included in the entry data D1. Usually, the answer to the description-type question is entered in units of entries having a single content (hereinafter referred to as "entry items"). For this reason, after a student has entered one entry item, it generally takes some time to think and organize the contents before heading for the next entry item. In other words, after one entry is entered, there is often a certain length of non-entry period, that is, a period in which no entry is made, before entry of the next entry is started. The non-entry period detecting unit 23 detects a non-entry period included in the entry data D1, that is, a period in which no entry has been made, as a break of entry items. Specifically, the entry data D1 transmitted from the entry device 10 includes position information and time information at which entry was made with the digital pen 10a or the touch pen 10b. Therefore, the non-entry period detecting unit 23 refers to the position information and the time information included in the entry data D1, and refers to the period during which no entry is made, more specifically, the digital pen 10a or the touch pen 10c is the entry medium. The time during which the user does not touch the answer sheet 50 or the touch panel of the tablet 10b may be detected as the blank period.

  The entry item number determination unit 25 determines the number of entry items included in the entry content indicated by the entry data D1 based on the no entry period detected by the no entry period detection unit 23. As described above, since the non-entry period has a meaning as a break between a plurality of entry items, a chunk of the entry contents divided by the non-entry period is determined as one entry item.

  The correcting unit 26 corrects the answer by recognizing the answer entered by the student based on the stroke extracted by the stroke extracting unit 22 and checking the answer with the correct answer information stored in the test information DB 24. Further, the correction unit 26 may perform scoring based on the number of entry items determined by the entry item number determination unit 25 based on a rule prepared in advance.

  The control unit 27 extracts the entry data D1 received by the communication unit 21 (that is, the image data of the answer entered by the student) or the stroke extraction unit 22 from the image data of the answer sheet stored in the test information DB 24. The answer image is created by combining the stroke data obtained. Further, the control unit 27 combines the number of entry items determined by the entry item number determination unit 25 and the correction result by the correction unit 26 on the answer image. Then, the control unit 27 transmits the created answer image to the teacher terminal 30 via the communication unit 21. This allows the teacher to display the answer image on the teacher terminal 30.

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

[Determining the number of entries]
(How to determine the number of entries)
Next, a method for determining the number of entries will be described in detail. FIG. 3 shows an example of the answer sheet 50 after the answer is 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 includes four entry columns of “opinion”, “ground”, “case”, and “summary”. Specifically, the entry column for "opinion" (also referred to as "entry column A") is composed of one entry column A1, and the entry column for "grounds" (also referred to as "entry column B") has two entries. It consists of columns B1, B2. The entry column for “case” (also called “entry column C”) is composed of two entry columns C1 and C2, and the entry column for “summary” (also called “entry column D”) is four entry columns D1. To D4. In FIG. 3, for convenience of explanation, reference numerals A1, B1 to B2, C1 to C2, and D1 to D4 indicating respective entry columns are shown. ) Is not printed.

  In this example, the student is required to describe the items of opinion, grounds, case, and summary in association with each other. In the answer sheet 50 illustrated in FIG. 3, the student first writes two opinions, “should be used” and “should not be used”, in the entry column A1. Also, two grounds are entered in the entry column B1 in association with the opinion "should be used." And two grounds are entered in the entry column B2 in association with the opinion "should not be used." . Further, three cases are entered in the entry column C1 in association with the basis entered in the entry column B1, and a summary is entered in the entry columns D1 and D2 in association with those cases. Similarly, two cases are entered in the entry column C2 in association with the basis entered in the entry column B2, and summaries are entered in the entry columns D3 and D4 in association with those cases.

  FIG. 4 shows entry items in the example of the answer sheet of FIG. Each entry 61 indicated by a broken line is an individual unit of items entered in each entry column. More specifically, each of the opinions "should be used" and the opinion "should not be used" entered in the entry column A1 correspond to one entry item 61. Also, two grounds entered in the entry column B1, two grounds entered in the entry column B2, three cases entered in the entry column C1, and two cases entered in the entry column C2 are 1 each. One entry 61. Furthermore, each of the summaries entered in the entry columns D1 to D4 corresponds to one entry 61.

  Normally, when correcting the answer to a short answer question, the contents to be entered are often examined and the number of entries is often counted. For example, a score is determined for each entry, and a score is added when a required number of entries are entered. Therefore, in the present embodiment, the number of entries in each entry column as shown in FIG. 3 is determined based on the entry data D1, thereby assisting the teacher with the correction work. Specifically, first, the non-entry period is detected by referring to the entry time data included in the entry data D1. Then, the entry content is divided into a plurality of entry items by setting a non-entry period equal to or longer than a predetermined reference time as a break of 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 non-entry period 62 after the entry of “should be used” in the entry column A1 until the entry of “should not be used”. Also in the entry columns B1 and B2, there is a non-entry period 62 from the entry of one basis to the entry of the second basis. The same applies to the entry columns C1 to C2 and D1 to D4. Also, there is a blank period 62 when moving the entry column. Therefore, by dividing the entry data D1 by a non-entry period equal to or 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 non-entry period is referred to. It is possible to determine the number of entries.

(Adjustment of reference time)
As described above, the blank period detecting unit 23 detects a blank period that is equal to or longer than a predetermined reference time. Here, first, the reference time is determined by analyzing entry data of a plurality of students, and determining a blank period that occurs when a student of standard scholastic ability fills each entry, that is, the entry of one entry. It is preferable that the determination be made by calculating the time required from completion to the start of entry of the next entry item.

  Further, it is preferable that the reference time is adjusted 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 reference time A is shortened because the input space A for the opinion has a small amount to be filled in and it is preferable that the student also fills in quickly. On the other hand, the entry column B of the case has a relatively large amount to be entered, and it is preferable that the student consider it carefully, so that the reference time is set longer than that of the entry column A.

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

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

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

  First, the management server 20 receives the entry data D1 for the answer sheet from the student entry device 10 via the communication unit 21 (step S10). Next, the management server 20 causes the stroke extraction unit 22 to extract a stroke from the entry data D1 (Step S11).

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

  Next, the management server 20 determines the number of entry items by the entry item number determination unit 25 (step S13). Specifically, as conceptually shown in FIG. 4, the management server 20 specifies the individual entry items 61 by dividing the entry data D1 at the position of the detected no entry period 62, and 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 acquires the answer entered by the student by character recognition or the like based on the stroke extracted in step S11, and performs the correction by referring to the correct answer information. More specifically, a keyword to be entered by the student is determined in advance as correct answer information, and points are added when the answer entered by the student includes the keyword.

  Further, the correction unit 26 may perform scoring based on the number of entry items determined by the entry item number determination unit 25 based on a rule prepared in advance. For example, the number of entries to be entered and the score may be determined in advance for each entry column, and scoring may be performed based on the number of entries entered in each entry column.

  Next, the management server 20 causes the control unit 27 to generate a response image and transmit it to the teacher terminal 30 (step S15). Specifically, the control unit 27 combines the image data of the answer sheet stored in the test information DB 24 with the image data of the answer entered by the student or the stroke data extracted by the stroke extracting unit 22 to answer the answer. Create an image. Then, the control unit 27 combines the number of entries determined in step S13, the correction result by the correction unit 26, and the like on the response image, generates a response image, and transmits the generated response image to the teacher terminal 30. This allows the teacher to display the answer image on the teacher terminal 30. Thus, the correction support processing ends.

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

[Line segment detection process]
Next, a description will be given of a process of detecting oblique lines and lines (hereinafter, collectively referred to as “line segments”) written on the answer sheet. In the answer sheet, a line segment having a specific meaning may be written, and when the student's intention is clear, it is convenient to detect the line segment and reflect the intention. Normally, line segments written on the answer sheet are assumed to be strike-through lines and association lines.

(Cancel line)
The cancellation line is a line intended to cancel (cancel) the already entered information. FIG. 7 shows an example in which a strike-through line is entered on the answer sheet. A strike-through line 53 is entered in an area 54 extending between the entry columns B2 and C2. As illustrated in FIG. 7, a strike-through line is generally entered diagonally from upper left to lower right over substantially the entire region to be canceled. Therefore, for example, a strike-through line can be detected by a combination of the following conditions 1 and 2 or a combination of the conditions 1 to 3.
Condition 1: The entered line segment has a length corresponding to a diagonal line of one entry column or a plurality of adjacent entry columns.
Condition 2: The entered line segment has an angle corresponding to a diagonal of one entry box or a plurality of adjacent entry boxes.
Condition 3: The entered line segment passes near a diagonal position of a rectangular area constituted by one entry box or a plurality of adjacent entry boxes.

  Since the position coordinates of each entry field provided on the answer sheet are stored in the test information DB 24 as answer sheet information, the control unit 27 may determine the above condition with reference to the information. If the control unit 27 determines that the line segment included in the entry data D1 corresponds to the strike-through line, the control unit 27 invalidates the entry contents in the entry column designated by the strike-through line. As a result, the student can efficiently cancel part of the items already entered in units of entry columns. In this case, the control unit 27 is an example of the deleting unit of the present invention.

(Association line)
The association line is a line indicating that items entered in a plurality of entry columns are mutually related. FIG. 8 shows an example in which an association line is entered on the answer sheet. An association line 55 is entered so as to connect the entry in the entry field B1 and the entry in the entry field C1 indicated by the broken line 56. As illustrated in FIG. 8, the association line is generally entered over a plurality of entry columns. In addition, an association line to be entered between adjacent entry columns is usually characterized by being shorter than the size of the entry column. In an answer sheet in which a plurality of entry columns are provided side by side as in the example of FIG. In the answer sheets provided side by side in the directions, the association line is often written in a diagonal direction close to the direct or vertical direction. Therefore, for example, a strike-through can be detected by the following condition 4 or a combination of the conditions 4 and 5.
Condition 4: The line segment extends over a plurality of adjacent entry columns, and the length of the line segment is shorter than the size (vertical or horizontal length) of the entry column.
Condition 5: The direction of the line segment is close to the direction in which a plurality of entry columns are arranged on the answer sheet.

  When determining that the line segment included in the entry data D1 corresponds to the association line, the control unit 27 may determine that the entry items entered near both ends of the association line are associated. Thus, for example, if a score is assigned to the association between specific entry items, the score can be automatically calculated based on the presence or absence of the association line. In this case, the control unit 27 is an example of the association determination unit of the present invention.

[Modification]
(Modification 1)
In the above-described embodiment, the number of entry items is determined based on the blank period detected by the blank period detection unit 23. In addition, the correction unit 26 corrects based on the detected blank period. Or advice may be provided. For example, if the blank period is too long, the evaluation may be lowered. Further, in the case of an exercise in a class instead of a formal test, 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)
In the above embodiment, the management server 20 and the teacher terminal 30 are provided independently. However, the function of the management server 20 may be included in the teacher terminal 30 instead. FIG. 9 shows a configuration example of the remote lesson system 100x in this case. As shown in the figure, the configuration on the student side is the same as that of FIG. 1, but the connection device 12 transmits the entry data D1 directly to the teacher terminal 30 via the network 5. A test information DB 34 and a test result DB 38 are connected to the teacher terminal 30, and the teacher terminal 30 may perform the processing performed by the management server 20 in the above embodiment instead. In this case, the teacher terminal 30 is an example of the receiving unit, the non-entry period detecting unit, the entry item number determining unit, the deleting unit, and the association determining unit of the present invention.

Reference Signs List 5 network 10 writing device 11a digital pen 11b tablet 11c touch pen 12 connecting device 20 management server 30 teacher terminal 50 answer sheet 100, 100x remote lesson system

Claims (10)

Receiving means for receiving entry data indicating the entry content entered by the entry device on the entry medium;
No entry period detecting means for detecting a non entry period in the entry data,
Based on the no entry period, entry item number determination means for determining the number of entries included in the entry content,
An entry analysis device, comprising:   2. The entry content analyzer according to claim 1, wherein the entry item number determination unit determines the number of entry items by referring to a positional relationship before and after the non-entry period. The entry medium is provided with a plurality of entry fields,
3. The entry content analyzer according to claim 1, wherein the entry item number determination means determines the number of entry items for each of the entry columns.   4. The method according to claim 1, wherein the number-of-entry determination unit detects a portion of a non-entry period longer than a reference time as a break of the entry and determines the number of the entry. 5. An entry analyzer for the contents described.   The entry content analyzer according to claim 4, wherein the entry item number determination unit uses a different reference time for each entry column.   The entry content analyzer according to claim 4, wherein the entry item number determination unit uses a different reference time for each user. The entry medium is a medium in which the answer to the question is entered,
The entry content analyzer according to claim 4, wherein the entry item number determination unit uses a different reference time according to the difficulty of the question. The entry medium is provided with a plurality of entry fields,
When the length, angle, and position of a line segment included in the entry data satisfy predetermined conditions, a deletion unit that deletes entry data in an entry column overlapping the line segment is provided. An entry content analyzer according to any one of claims 1 to 7. The entry medium is provided with a plurality of entry fields,
When the line segment included in the entry data extends over a plurality of entry columns and at least one of the length, angle, and position of the line segment satisfies a predetermined condition, the positions of both ends of the line segment The entry analysis device according to any one of claims 1 to 8, further comprising an association determination unit that determines that the entry described in (1) is associated. A program executed by an entry analysis device having a computer,
Receiving means for receiving entry data indicating the entry content entered by the entry device on the entry medium;
No entry period detecting means for detecting a non entry period in the entry data,
Based on the no entry period, entry item number determination means for determining the number of entry items included in the entry content,
A program for causing the computer to function as a computer.