RU2644329C1 - Method of correction of distribution of time to representation of visual training information - Google Patents

Abstract

FIELD: pedagogics.

SUBSTANCE: invention relates to the field of pedagogy, in particular to methods for correcting the distribution of time for the presentation of visual training information on the basis of contactless monitoring of psychophysical characteristics of students during the educational process. Result is achieved by forming several independent semantic blocks from visual information, presenting them on the demonstration screen, registering the positions of the eyes, movements, trajectory of movement and duration of fixations. Method is characterized in that it is technically equipped with an auditorium by means of remote determination of parameters of trainees, data collection and processing, set the value of the coefficient – K_backside, characterizing the proportion of students whose position of view corresponds to the position of the element of the semantic block at the time of attracting attention, marking on the demonstration screen of a 2-dimensional grid, construct the circumscribed circle around the graphic image of each element of the semantic block, consistently show on the demonstration screen a group of students pre-formed independent blocks of visual training information, register the positions of the eyes, movements, the trajectory of motion and the duration of fixations of the sight of each i-th trainee for each j-th semantic block, calculate R described around each element of the semantic block of the circle to fix the area of the zone of attracting attention, calculate L_i – the distance from the center of the circle described around the element of the semantic block, to the coordinates of the point of view of each i-th trainee, calculating K_{the fact that ti} – the actual coefficient for each element of the semantic block, characterizing the proportion of students, The position of the view at the time of attraction of attention satisfies the condition Li≤R, the values of K_{the fact that ti}, compare K_{the fact that ti} and K_backside, in the case when the value of K_{the fact that ti}= K_backside, then the distribution of the a priori heuristically given time for demonstration and perception of the element of the semantic block of visual training information is left unchanged, when the value of K_{the fact that ti} > K_backside, increase the a priori heuristically given time for drawing attention to the element of the semantic block in proportion to the change in K_{the fact that ti}, when, when the value of K_{the fact that ti} < K_backside, reduce the aprioristic heuristically given time for drawing attention to the element of the semantic block in proportion to the change in K_{the fact that ti}, write the corrected time values in the database to represent the visual training information.

EFFECT: technical result consists in correcting the distribution of time for the presentation of visual training information on the basis of the formation of a database of objective statistical information on the dynamics of attracting the attention of students to the displayed semantic blocks of visual learning information.

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Description

The present invention relates to the field of pedagogy, in particular to methods for correcting the distribution of time for the presentation of visual educational information based on non-contact monitoring of the psychophysical characteristics of students during the educational process.

In modern educational approaches to learning, information technologies are increasingly being used, and the achievements of neurolinguistic programming, covering representative human systems, are being actively introduced. Each system is a collection of elements that allow the presentation of information. By the nature of the dominant modality of the presentation of information, representative systems are divided into visual - in which vision dominates; auditory - hearing dominates; kinesthetic - motor sensations dominate; polymodal - generalized ideas and thought processes predominate. Through the visual organs, visual information enters the human brain, which makes up about 70% of all perceived information, therefore the visual representative system is dominant in humans.

The visual components of the training information materials include: demonstration screens, light projectors, computers, video monitors, digital images, animation effects, color, light, etc. Elements of visual information carriers have a great psychological effect on students, and the time taken for the intellectual assimilation of training information from visual information carriers significantly affects the overall level of teaching and performance.

Studies show that well-performing students in the learning process actively own, in addition to the leading visual system, other information processing and storage systems, while poorly-performing students do not use additional systems. Therefore, if the method of transferring knowledge does not correspond to the individual representative visual system of the student, then he needs additional time to “translate” the information received into the familiar form using the visual organs. Such temporary pauses for effective visual perception of information in the real educational process are not adapted to individual psychophysical characteristics of students.

Thus, in this situation, it is necessary to be able to carry out the correction of the distribution of time for the presentation of visual training information based on the collected objective data on the psychophysical state of students. Such actions will increase the objectivity of determining the correct time for the presentation of training information.

One of the most important elements in controlling the presentation of educational materials and increasing the level of perception is the correction of the distribution of time for the presentation of educational information, taking into account the psychophysical characteristics of students.

According to GOST R ISO 5492-2005 (approved by Order of the Russian Technical Regulation of December 29, 2005 N491-ст), psychophysics ( English psychophysics) is a science that studies the relationship between stimuli and sensory responses. In other words, psychophysics is a science that studies the interaction between objectively measurable physical processes and subjective mental experiences.

The methods of psychophysical research include: analysis of eye movements (Eye-tracking), electroencephalography (EEG), assessment of the emotional state by facial expressions, content linguistic and cognitive psychological analysis of texts, measurement of heart rate variability. All these methods help in studying the quality of perception of educational information by students. Their further study and use will contribute to a new impetus for the development of educational technologies in the field of education and pedagogy.

A known method of determining learning time, estimating the time of perception of visual information according to patent RU 2405409 C1 [АВВ 3/10, 12/10/2010, Bull. No. 34]. The method consists in the fact that the subject is presented with a sequence of two light pulses of a given duration, separated by a predetermined pause, repeated at a constant time interval, the measurement continues until the subject determines the moment of subjective fusion of two light pulses into one. At each subsequent measurement step, the speed of the pause duration between two light pulses decreases, a graph of the dependence of the time of perception of visual information is constructed, which allows one to determine the learning time from the number of measurements performed during the transient process.

The disadvantages of the method are:

- the subject is presented with a sequence of 2 light pulses, which are primitive types of visual information that do not imply additional intellectual processing of the visual information presented to the subjects, necessary for the learning process;

- the method involves testing on one subject, i.e. does not take into account data on the perception of information by a group;

- the method is based on taking measurements until the subject himself determines the moment of confluence of the pulses, i.e. the method does not take into account the objective psychophysical parameters of the subjects, which can intentionally distort the results.

A known method for diagnosing the intellectual potency of a learner (group of trainees) and the subsequent correction of the learning effect [RU 2523132 C2, A61B 5/00, 07/20/2014]. The method consists in the fact that the group of trainees is presented with educational information with a maximum and minimum level of complexity, then consciously physiological parameters are monitored for both levels of complexity and the current generalized group indicators of physiological parameters are determined from the obtained values. If these parameter values go beyond the boundaries of the reference corridor, the training effect is corrected by selecting one of the information complexity levels.

The described method has the following disadvantages:

- does not allow to allocate time for demonstration and perception of educational information based on the psychophysical characteristics of students;

- does not take into account the change in the psychophysical parameters of students controlled consciously during the learning process - the movement of students' views on the semantic blocks of visual educational information;

- is time consuming, as individual sensors are installed to measure the physiological parameters of each student, which is unacceptable in the process of group training.

A known method of monitoring information security of automated systems [RU 2481620 C1, G06F 15/00, 05/10/2013]. The method consists in preliminarily setting a plurality of controlled parameters characterizing the psychophysiological state of the operator after exposure to the operator using test information-psychological effects, measuring the values of the controlled parameters in a given time interval, comparing the measured values of the controlled parameters with the reference ones, and according to the comparison results form a report.

The method is time-consuming, since it involves the installation of individual monitoring systems to control the status parameters of each operator, which is unacceptable in the process of group training.

The closest in technical essence to the proposed method is a method for assessing the perception of information [RU 2529482 C2, A61B 5/16, 09/27/2014, Bull. No. 27]. In this prototype method, several independent semantic blocks are formed from visual information, at the same time they are presented to the test subject on the demonstration screen of the eye movement recording device, eye positions, the trajectory of movement and the duration of fixations are recorded, the obtained data are analyzed, and physiological parameters are evaluated by deviating from the background values, after which the elements of visual information are distributed according to the specified parameters.

The disadvantages of the prototype method include the following:

- the possibility of simultaneously obtaining data on the perception of visual information by a group of subjects is not realized;

- there is no possibility, as a result of the assessment, to appropriately allocate time for the demonstration of visual information, taking into account the psychophysical state of a given proportion of students;

- it is not supposed to enter the collected information into the database (hereinafter referred to as the DB), which increases the time for manual entry and reduces the reliability and timeliness of data processing;

- the complexity in connection with the use of a polygraph and contact sensors for measuring physiological parameters, which is unacceptable in the process of group training.

The technical result achieved by the application of the method is the correction of the distribution of time for the presentation of visual training information based on the formation of a database of objective statistical information on the dynamics of attracting students' attention to the demonstrated semantic blocks of visual training information.

The specified technical result is achieved by the fact that in the known method, which consists in the formation of several independent semantic blocks from visual information, present them on a demo screen, register the position of the eyes, movements, trajectory and duration of fixations, characterized in that they are previously technically equipped Audience premises remote means of determining the parameters enrolled, data collection and processing, set the value of the coefficient - K _ass characterizing d For students whose gaze position corresponds to the position of an element of a semantic block at the moment of attracting attention, they mark out a 2-dimensional coordinate grid on the demonstration screen, construct the circumscribed circle around the graphic image of each element of a semantic block, and consistently show pre-formed independent blocks of visual training information, register the position of the eyes, movement, trajectory and duration fixations each i-th learning for each j-th semantic unit, calculate R circumscribed around each item of semantic unit circle for fixing the area to attract attention area calculated L _i - distance from the center of the circle circumscribing the sense block element, to coordinate gaze point each i-th student, calculated to the _{fact ti} - the actual value for each element of the semantic unit, describing the share of students, the situation of view at the time of attracting attention which satisfies the condition of Li R, is recorded in the database values K _{fact ti,} compared to the _{fact ti} and K _ass, in the case where the value of K _{fact ti} = K _ass, the a priori heuristically predetermined timing to the demonstration and the perception element semantic unit visual training information is left unchanged, in the case when the value of K _{fact ti} > K _ass , increase the a priori heuristically specified time to draw attention to the element of the semantic block in proportion to the change in K _{fact ti} , in the case when the value of K _{fact ti} <K _ass , reduce the a priori heuristic time In order to attract attention to the element of the semantic block in proportion to the change in K _{fact ti} , the corrected time values for the presentation of visual training information are recorded in the database.

The claimed method is illustrated by drawings, which show:

FIG. 1 is an algorithm for a method of correcting time for the presentation of visual training information;

FIG. 2 - illustration for example - the first semantic block of visual training information, consisting of 2 elements;

FIG. 3 - illustration for example - calculation of the radius of a circle described around an element of a semantic block;

FIG. 4 - illustration for example - the second semantic block of visual training information, consisting of 2 elements;

FIG. 5 - an example of a database containing information (conditional number of the student, the coordinates of the gaze of each i-student, the time of demonstration of visual information, etc.);

FIG. 6 is an example of dividing semantic blocks of visual training information into elements whose data are entered into the database;

FIG. 7 is an example of the distribution of time in a database formed after n-conducted lessons.

The claimed method can be implemented using an algorithm, a block diagram of which is presented in FIG. 1. The actions of the method are carried out in any classroom designed for the training process using technical equipment.

1. Form several independent semantic blocks from visual information (bl. 2, Fig. 1).

2. Technically equip the classroom intended for conducting the learning process with the means of remote determination of the students' parameters, data collection and processing, namely, they are installed (bl. 3, Fig. 1):

- at least 2 rotary cameras, sequentially recording the view of each i-th student during the educational process;

- 1 video camera, which initially identifies students at the entrance to and exit from the audience by any external parameter recorded using television means (for example, eye characteristics);

- a video server with control functions for rotary devices of video cameras, software for creating, maintaining and accessing a database that receives objective data on fixing the positions of students' views while attracting attention, which are used in the future for correct distribution of time for demonstration of semantic blocks of visual training information;

- an infrared emitter, contrasting data on the movement of the directivity of the gaze of students on the semantic blocks of visual educational information on a demo screen;

- input devices (mouse, keyboard) and output devices (display for the teacher) connected to the video server;

- a video projector and a demonstration screen for displaying semantic blocks of visual training information, data on which are entered into the database.

An example of the separation of semantic blocks of visual training information into elements, data about which are entered into the database, is presented in FIG. 6.

3. Set the value of the coefficient - K _back , characterizing the proportion of students whose position of gaze corresponds to the position of an element of the semantic block of educational visual information at the time of attracting attention (bl. 1, Fig. 1).

In this method, K _ass equal to 70% is sufficient.

4. Mark up on the demo screen of the 2-dimensional coordinate grid (bl. 4, Fig. 1);

5. Build the circumscribed circle around the graphic image of each element of the semantic block according to the rule of the circumscribed circle around the polygon [Vygodsky, M.Ya. Handbook of elementary mathematics inscribed and described polygons / Vygodsky M.Ya. - M .: Nauka, 1966 - 298-299 s] (Bl. 5, Fig. 1).

6. Consistently present independent semantic blocks from visual information to students on the demo screen during a priori heuristically specified time intervals for the demonstration of each semantic block (bl. 6, Fig. 1);

7. Register the position of the eyes, movements, the trajectory of movement and the duration of fixation of the gaze of each i- th student on each j- th semantic block (bl. 7, Fig. 1). The definition and registration in the database of consistently collected information about the direction and duration of time of fixing the gaze of each i- th student requires a more detailed explanation of the actions.

The mechanisms of perception and active processing of visual information are widely studied in the framework of applied cognitive sciences. Known systems that track the dynamics and direction of eye movement ETS (Eye Tracking Systems). Known ETS-systems can be divided into the following main classes, depending on the nature of the tasks solved with their help:

- laboratory stationary instrumental systems;

- portable devices for games and virtual reality systems;

- Embedded systems for the human-machine interface.

In the proposed method, the action to determine the trajectory of the student’s gaze can be implemented in accordance with the well-known technical solution - RF patent No. 2444275 [А61В 3/00, А61В 3/113, 03/10/2012] "Method and device for determining the spatial position of the eyes to calculate the line of sight "Consisting in setting the relative position of the time-synchronized detecting images of an object in space.

The method for determining the spatial position of the eyes for calculating the line of sight consists in setting the relative position of more than one detecting image of an object in space synchronized with each other in time, means, obtaining images of object segments from different angles, each of which corresponds to a certain spatial position of the detecting image object means, evaluate, record the spatial position, the orientation of the segments of the object, reproduce from the received images of object segments, the image of the object as a whole, during playback, the image of the object is transferred to a visually perceptible medium, and each detecting image of the object is oriented autonomously onto a given segment of the object, incoming images are processed for those whose parameters satisfy predefined segments and form a coordinate system tied directly to the means detecting the image, determine and record the coordinates of the location region with The object’s segments in space relative to the generated coordinate system, the image of the object as a whole is reproduced in at least three different images of the given segments, while

- detectable object - images of the eyes of students;

- object segments - images of the pupil’s eye area of students;

- object segments - images of the area of the iris of students;

- as segments of the object, images of the eyeball region of the student’s eyes are set;

- when reproducing the obtained images of the students' eyes, the position of the iris and pupil area relative to the optical axis of the lens of each of the detecting image means is distinguished and the line of sight is determined.

8. Calculate the R described around each element of the semantic block of the circle to fix the area of the zone of attracting the attention of each i-th student to each j-th semantic block (bl. 8, Fig. 1).

The correspondence of 2 signs — the orientation and duration of fixing the views of students and the moment of drawing attention to the training information — is determined by calculating the radius equation described around the graphic image of each element of the semantic block of the circle according to the Pythagorean theorem (1) [M. Vygodsky Handbook of Higher Mathematics. / Vygodsky M.Ya. - M .: Nauka, 1977 - p. 53], calculating the distance between two points: the center of the circumscribed circle and the point of fixation of the gaze of the i- th student (2) [Vygodsky M.Ya. Handbook of Higher Mathematics. (12th ed.) / Vygodsky M.Ya. - M .: Nauka, 1977 - p. 23], determining the location of the coordinates of the point of fixation of the gaze of the i- th student to the circumscribed circle around the zone of attention:

x is the value of any point on the circle along the x coordinate;

x ₀ is the value of the point of the center of the circle along the x coordinate;

y is the value of any point on the circle along the y coordinate;

y ₀ is the value of the point of the center of the circle along the coordinate y;

R ² is the value of the square of the radius of the circumscribed circle;

R is the radius value of the circumscribed circle.

x is the value of the point of fixation of the gaze of the i- th student along the x coordinate;

x ₀ is the value of the point of the center of the circle along the x coordinate;

y is the value of the point of fixation of the gaze of the i- th student in the coordinate y;

y ₀ is the value of the point of the center of the circle along the coordinate y;

L is the distance between the center of the circumscribed circle and the point of fixation of the gaze of the i-th student.

The value of the radius for the zone of attracting attention, i.e. for the semantic block of visual training information, it is calculated along the circle described around the graphic image of the element of the semantic block to which attention is drawn. The circle can be described around any triangle and a regular convex polygon [Vygodsky, M.Ya. Handbook of elementary mathematics inscribed and described polygons / Vygodsky M.Ya. - M .: Nauka, 1966 - p. 298-299].

9. Calculate L _i - the distance from the center of the circle described around the element of the semantic block, to the coordinates of the point of view of each i- th student (bl. 9, Fig. 1).

The correspondence of the views of learners to the attention-grabbing zone is determined by determining the coordinates of the point of fixation of the gaze of the i- th student to the circumscribed circle around each element of the semantic block (3) [GlavSprav. Glossary. Algebra and geometry [Electronic resource]. - Access mode: http://edu.glavsprav.ru/info/okruzhnost. - (Date of treatment: 01/18/2017).].

R is the value of the radius of the circumscribed circle;

Li is the distance from the coordinates of fixing the gaze of the i-th student to the center of the circumscribed circle.

If Li≥R, - the view of the i- th student belongs to the element of the semantic block. Otherwise, the view does not belong to the element of the semantic block.

The duration of fixing the views on the element of the semantic block of visual educational information per unit time is determined by observing the condition: the duration of fixing the views of all students per unit time should be less than the time of presentation of the training material per each semantic block of visual educational information.

The coordinates of the gaze point are made relative to the center of the circumscribed circle and calculated by the formula (4) [Vygodsky M.Ya. Handbook of Higher Mathematics. (12th ed.) / Vygodsky M.Ya. - M .: Nauka, 1977 - p. 53].

Вх - coordinate of the point of fixation of the student’s gaze along the abscissa axis;

Ah is the coordinate of the center of the circle along the abscissa;

By - coordinate of the student’s gaze fixation point along the ordinate axis;

Au is the coordinate of the center of the circle along the ordinate axis.

The method allows to obtain N fixations of views and the number of students, the orientation and duration of the look of which corresponds to the moment of drawing attention to the element of the semantic block of visual educational information, and based on this, it is corrected to allocate time for the presentation of each element of the semantic block.

10. K _{fact ti} is calculated - the actual coefficient for each element of the semantic block characterizing the proportion of students whose position of sight at the moment of attention attracting satisfies the condition Li≤R (5) (bl. 10, Fig. 1).

m - the number of students, the position of the gaze at the time of attracting attention which satisfies the condition Li≤R;

n is the total number of students.

The total number of students n is fixed in the database as a result of sequential identification of students at the entrance to the audience and exit from it according to any external parameter using a video camera.

11. Write to the database the values of K _{fact ti} - objective information about the correspondence of the views of the students with the position of the elements of semantic blocks at the time of attracting attention (bl. 11, Fig. 1).

12. Compare the _{fact of ti} and K _ass (bl. 12, Fig. 1).

The goal is to determine the time intervals allocated for the demonstration of the training information of each element of the semantic block, taking into account the psychophysical characteristics of the students.

13. In the case where the value of K _{fach ti} = K _ass , then the distribution of the a priori heuristically specified time for demonstration and perception of the element of the semantic block of visual training information is left unchanged (bl. 13, Fig. 1), the time value for the training presentation is recorded in the database of information

14. In the case when the value of K _{fact tj} > K _ass , increase the a priori heuristically specified time to draw attention to the element of the semantic block for the adjusted time in proportion to the change in K _{fact ti} (bl. 15, Fig. 1) according to formula (6):

t a _priori - a priori heuristically given time for n semantic element;

To _ass - a coefficient characterizing the proportion of students whose look corresponds to the element of the semantic block of visual training information at the time of attention,%.

15. In the case when the value of K _{fact ti} <K _ass , reduce the a priori heuristically specified time to draw attention to the element of the semantic block for the adjusted time is proportional to the change in K _{fact ti} (bl. 16, Fig. 1) by the formula (7):

t a _priori - a priori heuristically given time for an n-semantic element;

To _ass - a coefficient characterizing the proportion of students whose look corresponds to the element of the semantic block of visual training information at the time of attention,%.

16. The corrected time values for the presentation of visual training information are recorded in the database (bl. 13, Fig. 1).

The reliability of the data on the adjusted distribution of time for the demonstration of semantic blocks can be improved by conducting n similar training sessions (an example is presented in Fig. 7).

An example implementation of the proposed method

The duration of one training process is 90 minutes. In one process, 10 students visited the audience. Educational visual information consists of 10 semantic blocks, the educator independently distributed the time for demonstration of semantic blocks evenly - 9 minutes per block. Each semantic block contains semantic elements, the teacher independently allocates time to attract the attention of students to each semantic element. On the 1 semantic block, the teacher determined that the time to attract the attention of students to 1 semantic element is 2 minutes, to 2 - 7 minutes.

In FIG. 2 presents the first semantic block of visual information, consisting of 2 elements. In this example, it is considered when a student draws the attention of students to a semantic element

1. Cameras at a speed of 1 time / min alternately measure the area of fixation of the gaze of each student. The fixing location is indicated in FIG.

2.2 points a1-a10 (first minute); b1-b10 (second minute).

A circle of radius R described around a semantic element is constructed on the coordinate plane. The center of the circle is point A with coordinates (x = 18.75; y = 7.75), point B is an arbitrary point on the circle with coordinates (x = 10; y = 10.75).

The radius of the circle is the hypotenuse in a right-angled triangle with legs equal to Bx - Ax and By - Ay (Fig. 3).

The system calculates the radius of the circle squared by the Pythagorean theorem (4):

According to this formula, the system calculates the distance from the center of the circle circumscribed around the semantic block to each point of fixing the gaze of each student and compares the results.

If the distance from the center of the circle to the point of fixation of the gaze of each student is ≤R, the student looks into the circumscribed circle.

If the distance from the center of the circle to the point of fixation of the gaze of each student is> R, the student does not look into the circumscribed circle.

Calculation relative to the area given by the described circle around the semantic element 1:

The learner’s view is concentrated on the semantic block in coordination with space and time with the learner:

Point a1 (x = 11; y = 6.5)

Point a2 (x = 12.5; y = 8)

Point a3 (x = 12.25; y = 11.25)

Point a4 (x = 15; y = 11)

Point a5 (x = 16.5 =; y = 6.5)

Point a6 (x = 12.75; y = 5.25)

Point a7 (x = 11.25; y = 8)

Point a8 (x = 16; y = 10)

Point a9 (x = 13.25; y = 11)

Point a10 (x = 14.25; y = 4.75)

Point b1 (x = 11; y = 10)

Point b2 (x = 13; y = 10)

Point b3 (x = 13; y = 6.5)

Point b4 (x = 15; y = 5.75)

Point b5 (x = 16; y = 5)

Point b7 (x = 11.5; y = 5)

The student’s view is not concentrated on the semantic block in a coordinated area and time with the student:

Point b6 (x = 7.5; y = 5)

Point b8 - the direction of the learner’s gaze goes beyond the boundaries of the semantic block.

Point b9 - the direction of the learner’s gaze goes beyond the boundaries of the semantic block.

Point b10 (x = 16.5; y = 13)

In 2 minutes, 16 out of 20 measurements of students' gaze fell into the field of attracting attention to students. (80%) => the student does not need to change the pace (Fig. 5).

In FIG. 4 presents a similar 2nd semantic block.

Cameras with a speed of 1 time / min alternately measure the area of fixation of the gaze of each student. The fixation point is indicated in the figure by dots a1-a10 (first minute); b1-b10 (second minute).

Calculation relative to the area given by the described circle around the semantic element 1:

The learner’s view is concentrated on the semantic block in coordination with space and time with the learner:

Point a1 (x = 11; y = 6.5)

Point a2 (x = 12.5; y = 8)

Point a3 (x = 12.25; y = 11.25)

Point a4 (x = 15; y = 11)

Point a5 (x = 16.5 =; y = 6.5)

Point a6 (x = 12.75; y = 5.25)

Point a7 (x = 11.25; y = 8)

Point a8 (x = 16; y = 10)

Point a9 (x = 13.25; y = 11)

Point a10 (x = 14.25; y = 4.75)

Point b1 (x = 15.75; y = 5)

The learner’s view is not concentrated on the semantic block in coordination with space and time with the learner:

Point b2 (x = 25.5; y = 13.5)

Point b3 (x = 8.5; y = 5)

Point b4 (x = 5.5; y = 8.25)

Point b5 (x = 20.5; y = 7.25)

Point b6 - the direction of the learner’s gaze goes beyond the boundaries of the semantic block.

Point b7 - the direction of the learner’s gaze goes beyond the boundaries of the semantic block.

Point b8 (x = 13; y = 14)

Point b9 - the direction of the learner’s gaze goes beyond the boundaries of the semantic block.

Point b10 (x = 20; y = 4.75)

For 2 minutes, 11 out of 20 measurements of students' gaze fell into the field of attracting attention to students. (55%) => 55% <70% => the student needs to reduce the a priori heuristically given time by this element of the semantic block.

According to the formula (5): 2 - ((1-0.55) * 2) = 2 - 0.9 = 1.1 => the student needs to reduce the time to attract students to the semantic element 1 by 0.9 minutes.

The actions of the method from p. 5 to p. 11 are repeated identically for each element of the semantic block.

Thus, the claimed technical result is achieved — the correction of the distribution of time for the presentation of visual training information based on the formation of a database of objective statistical information on the dynamics of the nature of attracting students' attention to the demonstrated semantic blocks of visual training information.

Claims (1)

A method for correcting the distribution of time for the presentation of visual training information, which consists in the fact that they form several independent semantic blocks from visual information, present them on a demo screen, register the positions of the eyes, movements, the trajectory of movement and the duration of fixations, characterized in that they are technically equipped with classroom information means room enrolled remote determination parameters, data collection and processing, set the value of the coefficient - K _ass ha characterizing the proportion of students whose gaze position corresponds to the position of the element of the semantic block at the time of attracting attention, carry out marking on the demonstration screen of a 2-dimensional coordinate grid, construct the circumscribed circle around the graphic image of each element of the semantic block, consistently show pre-formed independent blocks on the demo screen visual training information, register the position of the eyes, displacements, the trajectory of movement, and the duration of the fixations of the gaze of each i-th student to each j-th semantic block, calculate R described around each element of the semantic block of the circle to fix the area of the zone of attention, calculate L _i - the distance from the center of the circle described around the element of the semantic block to the coordinates of the point each i-th student’s gaze, K _{fact ti} is calculated - the actual coefficient for each element of the semantic block, characterizing the proportion of students whose gaze position is satisfactory breaks the condition Li≤R, writes the K _{fact ti} values to the database (DB), compares the K _{fact ti} and K _ass , in the case when the K value is _ti = K _ass , then the distribution of the a priori heuristically specified time for demonstration and perception of the semantic element block visual training information is left unchanged, in the case when the value of K _{fact ti} > K _ass , increase the a priori heuristic time to draw attention to the element of the semantic block in proportion to the change in K _{fact ti} , in the case when the value of K _{fact ti} <K _ass , reduce a priori The new heuristically specified time for drawing attention to the element of the semantic block is proportional to the change in K _{fact ti} , the corrected time values for the presentation of visual training information are recorded in the database.

Images