KR20160109339A - Method and apparatus for detecting the items of user's implicit interest based on on-device data analysis, and computer program thereof - Google Patents
Method and apparatus for detecting the items of user's implicit interest based on on-device data analysis, and computer program thereof Download PDFInfo
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Abstract
The present invention relates to a method, a device, and a computer program for detecting a user's tentative items of interest, and more particularly, to a method and apparatus for detecting a user's tentative item of interest by analyzing information obtained in a terminal, To an apparatus and method for detecting an implicit item of interest of a user that can effectively detect an implicit item of interest of a user.
The present invention provides a method of detecting an implicit item of interest among a plurality of items provided by a terminal to a user, the method comprising: providing an item to a user; Collecting the user's implicit response data for the item; And an implicit interest item determination step of determining whether the item is an implicit interest item of the user by applying the user's implicit response data to at least one classifier, And the like.
Description
The present invention relates to a method, a device, and a computer program for detecting a user's tentative items of interest, and more particularly, to a method and apparatus for detecting a user's tentative item of interest by analyzing information obtained in a terminal, To an apparatus and method for detecting an implicit item of interest of a user that can effectively detect an implicit item of interest of a user.
With the advent of the information age, users have been able to collect a wide variety of information that is difficult to compare with the past. Therefore, it is necessary to accurately determine whether any of the information is useful information, There is an increasing demand for.
Accordingly, attempts have been made to develop an item of interest having interest of a user to selectively provide information suitable for a user. For example, in Korean Patent Laid-Open Publication No. 10-2013-0039179 (published on March 19, 2013), the user's visit information for each category in the online shopping mall, keyword inquiry information in online shopping mall, purchase information, Discloses a technique for selecting a target item of a user in consideration of user's action information such as category information of a product, and providing target advertisement tailored to the user by using the item of interest.
However, in the case of selecting the items of interest of the user by using only the explicit action information of the user such as the visit information, keyword inquiry information, purchase information, and category information of the product, And missing items that are not explicitly responded to. More specifically, it is known that among the plurality of items provided to the user, the number of items for which the user expressly reacts through an action such as a click is usually considerably small, and the summary information provided with the item alone It is highly possible that the user does not express an explicit response such as checking the specific information by selecting the provided item.
In this way, among the items that do not express an explicit response such as the user selecting the provided item, there may exist an item that the user is interested in, and such an item may be referred to as an implicit item of interest. Such an implicit attention item may be used in conjunction with an item of interest that the user has explicitly responded to, thereby contributing to more accurately and richly deriving the item of interest of the user.
For example, in calculating the effectiveness of an advertisement in a mobile advertisement, a web page advertisement, etc., the effectiveness of the advertisement is determined based on whether the user has explicitly selected the advertisement (for example, whether or not the advertisement is clicked on) It is possible to more accurately analyze the effectiveness of the advertisement by taking into consideration the advertisements that the user has tended to pay attention to even if the user does not express an explicit response to the advertisement provided.
Further, in order to calculate the implicit items of interest of the user, it may be possible to consider calculating or utilizing the user's implicit items of interest by transmitting various information collected at the user's terminal to an external server or the like, A variety of personal information about a user may be used for an unintended purpose or infringe on a user's privacy.
Accordingly, a method and apparatus for detecting a tentative interest item of a user that can effectively calculate a tentative interest item of a user, and can prevent a privacy invasion problem that may be caused when personal information about a user is transmitted to the outside, Although there is a continuing demand for the program, there is still no way to resolve the above problems adequately.
Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a method and apparatus for detecting a tentative interest item of a user that can effectively calculate a tentative interest item of a user in consideration of a user's reaction to the presented item And to provide a computer program therefor.
The present invention also provides a method and apparatus for detecting an implicit item of interest of a user that can effectively avoid the privacy invasion problem that may occur when information about a user is transmitted to the outside and can effectively calculate an implicit item of interest for each user, And to provide a computer program.
According to an aspect of the present invention, there is provided a method of detecting an implicit item of interest of a user, the method comprising: detecting a tentative interest item of a user among items provided to the user by the terminal, Providing step; Collecting the user's implicit response data for the item; And an implicit interest item determination step of applying the user's implicit response data to one or more classifiers to determine whether the item is an implicit item of interest of the user.
Here, in the item providing step, a plurality of items may be provided in a top-down or left-right direction, and the plurality of items may be provided in a manner of scrolling up or down or left or right according to the user's operation.
In the data collecting step, as the implicit response data, a time at which the item stays on the screen of the terminal, whether the item is located in an area where the user looks at the screen of the terminal, A number / distance / speed at which the user wipes the screen of the terminal, a number / distance / speed at which the user wipes the screen of the terminal in the reverse direction, The distance between the user and the terminal at the time when the item is provided, the illuminance of the screen of the terminal at the time when the item is provided, Of the user reaction data collected using the camera of the terminal Can be collected.
In addition, in the step of determining an implicit item of interest, the terminal may determine whether the item is the implicit item of interest of the user, without sending the user's implicit response data to the outside.
In addition, in the step of determining the tentative interest items, only the items that a plurality of classifiers commonly determine as tentative interest items can be determined as tentative interest items for the user.
The method may further include a classifier updating step of re-learning and updating the classifier using the implicit response data for the items explicitly selected by the user as learning data.
A computer program according to another aspect of the present invention is characterized by being a computer program stored in a computer readable recording medium containing contents for executing the respective steps described above in a computer.
A terminal capable of detecting a tentative interest item of a user according to another aspect of the present invention is a terminal capable of detecting a tentative interest item of a user among items provided to a user, A data collection unit for collecting the user's implicit response data for the item; And an implicit interest item determiner for applying the implicit response data of the user to one or more classifiers to determine whether the item is an implicit item of interest of the user.
Here, in the item providing unit, a plurality of items may be provided in a top-down or left-right direction, and the plurality of items may be provided in such a manner that the items are scrolled vertically or horizontally according to the operation of the user.
In the data collection unit, as the implicit response data, a time at which the item stays on the screen of the terminal, whether the item is located in an area where the user looks at the screen of the terminal, A number / distance / speed at which the user wipes the screen of the terminal, a number / distance / speed at which the user wipes the screen of the terminal in the reverse direction, The distance between the user and the terminal at the time when the item is provided, the illuminance of the screen of the terminal at the time when the item is provided, At least one of the user reaction data collected using the camera of the terminal Can be collected.
In addition, the implicit attention item determination unit may determine whether the item is the implicit item of interest of the user, without sending the user's implicit response data to the outside of the terminal.
In addition, in the tentative interest item determination unit, only the items that a plurality of classifiers commonly determine as tentative interest items can be determined as tentative interest items for the user.
The classifier may further include a classifier updating unit for re-learning and updating the classifier using the implicit response data for the items explicitly selected by the user as learning data.
According to the present invention, by analyzing information that can be obtained in a terminal, such as a user's response to the provided item, by using a classifier, a user can easily calculate an implicit item of interest , An apparatus and a computer program therefor.
According to the present invention, data of a user's reaction to an item is collected and processed in the terminal without transmitting the personal information of the user to the outside of the terminal, thereby calculating the implicit items of interest of the user, The present invention has an effect of disclosing a method and apparatus for detecting an implicit item of interest of a user that can prevent the privacy invasion problem that may occur when the user transmits the program.
BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is a block diagram of a system for detecting an implicit item of interest according to an embodiment of the present invention.
2 is an exemplary view of a screen of a mobile terminal in which a plurality of items are scrolled according to an embodiment of the present invention.
3 is an exemplary view of a PC screen in which a plurality of items are scrolled according to an embodiment of the present invention.
4 is a flowchart of a method for detecting a user's implicit items of interest, in accordance with an embodiment of the present invention.
FIG. 5 is a configuration diagram of a user's tentative interest item detection terminal according to an embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments will be described in detail below with reference to the accompanying drawings.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
The terms first, second, etc. may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another Is used.
According to the present invention, when a user generates an item of interest using only an item explicitly responded to through an action such as a click, the user's interest item is missing or the accuracy of a user's item of interest is low It is desirable to effectively transmit a message to a user at a proper time without leakage of information to the outside of the terminal in order to solve such a problem, Such as a response of the user, is analyzed using a classifier, and data such as a user's reaction to the item is collected and processed in the terminal to calculate a tentative interest item of the user, The implicit items of interest The present invention also provides a method and apparatus for detecting an implicit item of interest, which can prevent a privacy invasion problem that may occur when information about a user is transmitted to the outside, and a computer program therefor.
Hereinafter, a message providing method, an apparatus, and a computer program therefor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
First, FIG. 1 illustrates a configuration of a user's implicit items of
At this time, when the
Further, the
Here, the
At this time, the item may include goods information, a news article, a movie, a moving image, a photograph, etc., provided to the user, and a message such as an advertisement or an SNS that can be an object of interest of the user may be widely included .
The
In addition, the
Hereinafter, a method and apparatus for detecting a user's implicit items of interest according to an embodiment of the present invention will be described in more detail.
FIG. 2 illustrates an embodiment in which a plurality of items are provided to the
However, when the user selects a specific item among the plurality of items and uses the selected item, for example, the user selects the first news article in FIG. 2 to read the specific content of the article, In the case of purchasing, there is no particular problem in viewing the item selected and used by the user as an item of interest to which the user is interested. However, even if the user is interested in some item among the plurality of items, And does not show an explicit response, such as selecting an item with the
For example, even if the user is interested in the second news article of FIG. 2, if sufficient information can be obtained from the summary information of the second news article shown in FIG. 2, or if the user has already read a similar news article , The user is more likely to pass the second news article of FIG. 2 without selecting it.
As described above, among the items that do not express an explicit response, such as the user selecting the provided item, there may exist items that the user is interested in, and these items may be referred to as tentative items of interest. The implicit attention item may be used in conjunction with an item of interest that the user has explicitly responded to, thereby having the advantage of being able to derive the item of interest of the user more accurately and abundantly.
Accordingly, in the present invention, when the user uses the
Here, the classifier may be a sequential pattern such as HMM (Hidden Markov Model) (for example, when a user pauses a screen quickly and then quickly moves again, A dynamic classifier capable of effectively classifying the user's likelihood of being an implicit item of interest for the user, a support vector machine (SVM) capable of determining whether the user is an implicit item of interest based on various feature values, A static classifier such as a Decision Tree (DT) may be used.
In addition, the classifier can perform various machine learning such as logistics regression, Bayesian network, AdaBoost, Naive Bayes, and Learning Automata, if the user can calculate the implicit items of interest by applying information collected from the terminal 120, (Machine Learning) technique.
In order for the classifier to operate, feature values for the item provided to the user must be collected, and as features that can be used to determine whether the item provided to the user is an implicit item of interest for the user, A time at which the item stays on the screen of the terminal, whether the item is located in an area of the user's gaze on the screen of the terminal, a time at which the item stays in the area of the user's gaze, A number / distance / speed of flicking the screen, a number / distance / speed of flicking the screen of the terminal in the reverse direction by the user, data on tabs existing on the screen of the terminal, An existing item, a user at the time point when the item is provided, The user's reaction data collected using the camera of the terminal at the time the item is provided, and the like may be used. .
For example, if the user is scrolling through a screen provided with a plurality of items, then stops scrolling, and then strikes an item located in a specific area of the terminal 120 for a considerable time, It is likely that the possibility of corresponding item is considerably high.
Further, in order to protect the user's personal information in determining the implicit items of interest to the user, the user's private information such as the user's tacit response data is not transmitted to the terminal 120, Is an implicit item of interest for the user.
In addition, since learning data is required to generate the classifier, the learning data can be constructed using the item explicitly selected by the user as the learning data. That is, since the item explicitly selected by the user can be regarded as an item of interest to the user, the user can construct the learning data with the item explicitly selected by the user and generate the classifier through predetermined machine learning or the like.
For example, if a user wishes to generate a classifier for a specific item i selected as a feature by using the time the item stays on the screen and the distance scrolled on the screen, the learning data T = (F j , L j ), j = 1, ..., m (where m is the number of training data and F j is a vector of factor values corresponding to jth learning data). More specifically, for example, when the user explicitly selects a specific item i, the time when the specific item i remains on the screen is 3 seconds, and the distance the user scrolls the screen is 3 cm, the learning data T = 3 cm), YES), where YES is the item of interest.
Accordingly, the learning data can be formed by considering the item that the user has explicitly selected as an item of interest, and the learned classifier can be created using the constructed learning data.
Further, the classifier is not maintained in a fixed state but consists of learning data from user's response data for an item continuously provided and re-learns the classifier periodically or irregularly, It is possible to implement a classifier with higher accuracy.
For example, since the re-learning and updating process of the classifier can take a considerable amount of computational resources (such as a CPU usage rate), it is possible to perform a regular period of time such as a nighttime when a user sleeps, You can update the classifier effectively while reducing the size.
In addition, when the tentative interest items for the user are determined using the classifier, it is possible to more accurately determine the tentative items of interest by using a plurality of classifiers. The characteristics of the result calculated according to the type of the plurality of classifiers vary somewhat, so that the disadvantages of the plurality of classifiers can be compensated by considering the judgment results of the plurality of classifiers together.
In particular, by judging only the items that the plurality of classifiers commonly regard as the tentative items of interest as the tentative items of interest for the user, it is possible to greatly increase the precision of the judgment even if the number of tentative items of interest is somewhat reduced You can have an advantage.
3 illustrates a personal computer screen on which a plurality of items such as SNS posts are scrolled. As described above, various terminals such as a personal digital assistant (PC) as well as a PC may be used as an embodiment of the present invention, and the items may be provided to users in various forms.
Next, FIG. 4 illustrates a flowchart of a method for detecting an implicit item of interest of a user according to an embodiment of the present invention. As shown in FIG. 4, the method of detecting a tentative interest item of a user according to an embodiment of the present invention includes an item providing step (S410) of providing an item to a user, a step of providing the user's tentative reaction data (S420), and an implicit interest item determination step (S430) of determining whether the item is an implicit interest item of the user by applying the user's implicit response data to one or more classifiers And a classifier updating step S440 of re-learning and updating the classifier using the implicit response data for the items explicitly selected by the user as learning data.
At this time, in the item providing step S410, a plurality of items are provided in the vertical direction or left and right direction, and the plurality of items may be provided in a manner of scrolling up and down or left and right according to the operation of the user.
In the data collection step (S420), as the implicit response data, a time at which the item stays on the screen of the terminal, whether the item is located in an area staked by the user on the screen of the terminal, Distance / speed at which the user wipes the screen of the terminal, the number / distance / speed at which the user wipes the screen of the terminal in the reverse direction, A distance between the user and the terminal at the time when the item is provided, a roughness of the screen of the terminal at the time when the item is provided, One of the user reaction data collected using the camera of the terminal at the time of providing It can collect the prize.
In addition, in the step of determining an implicit item of interest (S430), the terminal does not transmit the user's implicit response data to the outside, and determines whether or not the item is the implicit item of interest of the user, It is possible to prevent a privacy invasion problem that may occur when the data is transmitted to the outside.
In addition, in the step of determining the implicit items of interest (S430), only the items determined by the plurality of classifiers as the implicit items of interest are determined to be the implicit items of interest for the user, so that the precision of the implicit items of interest ) Can be greatly improved.
In addition, as an embodiment of the present invention, the above-described method of detecting a user's tentative interest items is implemented in the form of a software development kit (SDK) library, and various types of items such as movies, Or may be embedded in a program such as an application that provides the service. Then, the application including the SDK is installed in the
A computer program according to another aspect of the present invention is a computer program stored on a readable recording medium including instructions for executing each step of a method of detecting a tentative interest item of a user according to an embodiment of the present invention, . At this time, the computer program may include not only machine language codes such as those produced by a compiler but also high-level language codes that can be executed in a computer using an interpreter or the like. The computer is not limited to a personal computer (PC), a notebook computer, and the like. The computer may include a central processing unit (CPU) such as a server, a smart phone, a tablet PC, a PDA, Device. Furthermore, the recording medium may include magnetic media such as a hard disk, a floppy disk and a magnetic tape, optical media such as CD-ROM and DVD, magnetic-optical media such as a floppy disk And a hardware device configured to store and execute program instructions such as medium (megneto-optical media) and ROM (ROM), random access memory (RAM), flash memory and the like.
FIG. 5 illustrates a configuration of a terminal 120 that can detect an implicit item of interest of a user according to an embodiment of the present invention. 5, the terminal 120 capable of detecting a user's implicit items of interest according to an embodiment of the present invention includes an
First, the
Then, the
In addition, the implicit
At this time, the implicit attention
In addition, the implicit interest
Finally, the
The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the technical spirit of the present invention but to illustrate the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.
100: User's implicit attention item detection system
110: Server
120, 120a, 120b:
122: Item Offering
124: Data collection unit
126: Implicit attention item judging unit
128:
Claims (13)
An item providing step in which a terminal provides an item to a user;
Collecting the user's implicit response data for the item; And
And an implicit item of interest determination step of applying the implicit response data of the user to one or more classifiers to determine whether the item is an implicit item of interest of the user.
In the item providing step,
A plurality of items are provided in a top-down or left-right direction,
Wherein the plurality of items are provided in such a manner that the items are scrolled vertically or horizontally according to an operation of the user.
In the data collection step,
As the implicit reaction data,
A time at which the item stays on the screen of the terminal, whether the item is located in an area where the user is looking at the screen of the terminal, a time at which the item stays in the area where the user stays, Distance / speed of sweeping the screen of the terminal in the reverse direction, data on a tab existing on the screen of the terminal, presence / absence of data on the screen of the terminal when the terminal is shaken, A distance between the user and the terminal at the time when the item is provided, a roughness of the screen of the terminal at the time when the item is provided, a user reaction to be collected using the camera of the terminal at the time the item is provided, The method comprising collecting one or more of the data How.
In the tentative interest item determination step,
The terminal does not transmit the user's implicit response data to the outside,
Wherein the method further comprises determining whether the item is an implicit item of interest of the user.
In the tentative interest item determination step,
Wherein the method further comprises the step of determining that only the items that are classified by the plurality of classifiers as the implicit items of interest are determined as the implicit items of interest for the user.
Using the implicit response data for the items explicitly selected by the user as learning data,
Further comprising a classifier updating step of re-learning and updating the classifier.
Providing an item to the user;
A data collection unit for collecting the user's implicit response data for the item; And
And an implicit item of interest determination unit for determining whether the item is an implicit item of interest of the user by applying the user's implicit response data to one or more classifiers. The terminal.
In the above item providing service,
A plurality of items are provided in a top-down or left-right direction,
Wherein the plurality of items are provided in such a manner that the plurality of items are scrolled vertically or horizontally according to an operation of the user.
In the data collection unit,
As the implicit reaction data,
A time at which the item stays on the screen of the terminal, whether the item is located in an area where the user is looking at the screen of the terminal, a time at which the item stays in the area where the user stays, Distance / speed of sweeping the screen of the terminal in the reverse direction, data on a tab existing on the screen of the terminal, presence / absence of data on the screen of the terminal when the terminal is shaken, A distance between the user and the terminal at the time when the item is provided, a roughness of the screen of the terminal at the time when the item is provided, a user reaction to be collected using the camera of the terminal at the time the item is provided, And collecting one or more of the data Detectable terminal.
In the tentative interest item determination unit,
Wherein the user does not transmit the implicit response data to the outside of the terminal,
Wherein the terminal is capable of detecting a user's implicit item of interest, wherein the terminal is capable of detecting whether the item is an implicit item of interest of the user.
In the tentative interest item determination unit,
Wherein the tentative item of interest is determined to be a tentative item of interest for the user, the item being determined by the plurality of classifiers as an implicit item of interest.
Using the implicit response data for the items explicitly selected by the user as learning data,
Further comprising: a classifier updating unit for re-learning and updating the classifier.
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KR20100129667A (en) * | 2009-06-01 | 2010-12-09 | 한국전자통신연구원 | The apparatus and method for contextual knowledge extraction based on web mining and the context-aware mobile advertising system |
KR100961783B1 (en) * | 2009-06-29 | 2010-06-07 | 주식회사 모임 | Apparatus and method for presenting personalized goods and vendors based on artificial intelligence, and recording medium thereof |
JP2014067401A (en) * | 2012-09-24 | 2014-04-17 | Nhn Business Platform Corp | Method and system for providing advertisement based on gaze of user |
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KR20200083424A (en) * | 2018-07-16 | 2020-07-08 | 김영곤 | The time count method and devices required to stare each item |
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