WO2020119173A1

WO2020119173A1 - Information pushing method and apparatus

Info

Publication number: WO2020119173A1
Application number: PCT/CN2019/102283
Authority: WO
Inventors: 李村
Original assignee: 北京字节跳动网络技术有限公司
Priority date: 2018-12-10
Filing date: 2019-08-23
Publication date: 2020-06-18
Also published as: CN109614549B; CN109614549A

Abstract

Disclosed in embodiments of the present application are an information pushing method and apparatus. An exemplary implementation of the method comprises: obtaining a candidate set operation expression set, wherein a candidate set operation expression is used for representing a set operation for at least one preset user identifier set; for a candidate set operation expression in the candidate set operation expression set, in response to receiving a pushing instruction corresponding to the candidate set operation expression, determining whether an operation result set of the candidate set operation expression is an empty set, wherein the pushing instruction is configured to instruct to push target information to a terminal device used by a user indicated by the operation result set of the candidate set operation expression; and in response to determining that the operation result set of the candidate set operation expression is not an empty set, pushing the target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression.

Description

Method and device for pushing information

This application requires the priority of a Chinese patent application filed on December 10, 2018, with the Chinese Patent Office, application number 201811503820.7. The entire contents of this application are incorporated by reference in this application.

Technical field

The embodiments of the present application relate to the field of computer technology, such as a method and an apparatus for pushing information.

Background technique

With the development of Internet technology, pushing various information to users through the Internet is a common way of displaying information. In the selection of push content, users can be divided into different groups according to different user attributes (such as age, gender, hobbies, occupation, etc.), and then different push content can be selected for different groups.

Summary of the invention

The embodiments of the present application provide a method and an apparatus for pushing information.

In a first aspect, an embodiment of the present application provides a method for pushing information. The method includes: obtaining a candidate set operation expression set, where the candidate set operation expression in the candidate set operation expression set is used to indicate at least Set operation of a preset user identification set; for the candidate set operation expression in the candidate set operation expression set, in response to receiving the push instruction corresponding to the candidate set operation expression, the candidate set operation expression is determined Whether the operation result set of the formula is an empty set, wherein the push indication is set to instruct to push target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression; in response to determining the candidate set The operation result set of the operation expression is not an empty set, and the target information is pushed to the terminal device used by the user indicated by the operation result set of the candidate set operation expression.

In a second aspect, an embodiment of the present application provides an apparatus for pushing information, the apparatus includes: an acquiring unit configured to acquire a candidate set operation expression set, wherein the candidate set operation expression in the candidate set operation expression set The expression is used to represent a set operation on at least one preset user identification set; the pushing unit is configured to respond to the candidate set operation expression in the candidate set operation expression set in response to receiving the candidate set operation expression Corresponding to the push instruction, determining whether the operation result set of the candidate set operation expression is an empty set, wherein the push instruction is set to indicate the terminal used by the user indicated to the operation result set of the candidate set operation expression The device pushes target information; in response to determining that the operation result set of the candidate set operation expression is not an empty set, push the target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression.

In a third aspect, an embodiment of the present application provides a server including: at least one processor; a storage device configured to store at least one program; when the at least one program is executed by the at least one processor, the server The at least one processor implements the method as described in any one implementation manner of the first aspect.

According to a fourth aspect, an embodiment of the present application provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a processor, the method described in any one of the implementation manners of the first aspect is implemented.

BRIEF DESCRIPTION

FIG. 1 is an exemplary system architecture diagram to which an embodiment of the present application can be applied;

2 is a flowchart of an embodiment of a method for pushing information according to the present application;

3 is a schematic diagram of an application scenario of a method for pushing information according to an embodiment of the present application;

4 is a flowchart of another embodiment of a method for pushing information according to the present application;

5 is a schematic structural diagram of an embodiment of an apparatus for pushing information according to the present application;

6 is a schematic structural diagram of a computer system suitable for implementing the server of the embodiment of the present application.

detailed description

The application will be described in detail below with reference to the drawings and embodiments. It can be understood that the example embodiments described herein are only used to explain the related invention, but not to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings.

It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other if there is no conflict. The application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

FIG. 1 shows an exemplary architecture 100 of an embodiment of a method for pushing information or an apparatus for pushing information to which the present application can be applied.

As shown in FIG. 1, the system architecture 100 may include

terminal devices

101, 102, 104, 105, a server 103, and a database 106. The

terminal devices

101, 102, 104, 105 and the server 103 can be communicatively connected by various connection methods. The database 106 and the server 103 can be communicatively connected.

The

terminal devices

104 and 105 can receive the information pushed by the server 103. Various client applications may be installed on the

terminal devices

104 and 105. The

terminal devices

101, 102 may send a push instruction to the server 103 to push information to the

terminal devices

104, 105. Various client applications may also be installed on the

terminal devices

101 and 102.

The

terminal devices

101, 102, 104, 105 may be hardware or software. When the

terminal devices

101, 102, 104, 105 are hardware, they can be various electronic devices that support information push, including but not limited to smart phones, tablet computers, e-book readers, laptop portable computers, and desktop computers and many more. When the

terminal devices

101, 102, 104, and 105 are software, they can be installed in the electronic devices listed above. It can be implemented as multiple software or software modules (for example, multiple software or software modules used to provide distributed services), or as a single software or software module. No limitation here.

The server 103 may be a server that provides various services. For example, the server 103 may be a back-end server that supports applications installed on the

terminal devices

101 and 102. At this time, the

terminal devices

101 and 102 may send a push instruction to push information to the

terminal devices

104 and 105 to the server 103 through the application installed thereon. The server 103 may also be a back-end server that provides support for the applications installed on the

terminal devices

104 and 105. At this time, the

terminal devices

104 and 105 can use the applications installed on them to receive the information pushed by the server 103.

The database 106 can provide data support for the server 103. For example, the database 106 may store at least one preset user identification set. When receiving the push instruction sent by the

terminal devices

101 and 102, the server 103 may obtain at least one preset user identification set corresponding to the candidate set operation expression corresponding to the push instruction from the database 106 to execute the push instruction.

It should be noted that the database 106 may also be directly installed in the server 103. At this time, the server 103 may directly obtain the preset user identification set from the local database to complete the push instruction.

It should be noted that the method for pushing information provided by the embodiments of the present application is generally executed by the server 103, and accordingly, the device for pushing information is generally provided in the server 103.

It should be noted that the server 103 may be hardware or software. In the case where the server 103 is hardware, it can be implemented as a distributed server cluster composed of multiple servers or as a single server. When the server 103 is software, it may be implemented as multiple software or software modules (for example, multiple software or software modules for providing distributed services), or may be implemented as a single software or software module. No limitation here.

It should be understood that the numbers of terminal devices, servers, and databases in FIG. 1 are only schematic. According to the implementation needs, there can be any number of terminal devices, networks and servers.

Referring to FIG. 2, it shows a flow 200 of an embodiment of a method for pushing information according to the present application. The method for pushing information includes steps 201 to 202.

In step 201, a candidate set operation expression set is obtained.

In this embodiment, the candidate set operation expression in the candidate set operation expression set is used to represent a set operation on at least one preset user identification set. The user identifiers in the preset user identifier set may be various identifiers that can be used to identify users. It should be understood that, since the user communicates with the above-mentioned executive body through the terminal device used, the user can be identified by using the identification of the terminal device used by the user. Different types of terminal devices can use different identifications.

In an embodiment, the user identification includes but is not limited to: Media Access Control (Media) Control (MAC) address, International Mobile Equipment Identity (International Mobile Equipment Identity (IMEI), advertising identifier (Identifier For Advertising, IDFA), The device's unique identifier (Unique Device Identifier, UDID), universal unique identifier (Universally Unique Identifier, UUID), etc.

In an embodiment, the user identification may also use user-related information. The user identification includes but is not limited to: the user's mailbox, mobile phone number, the account registered by the user in the target application on the terminal device, and so on.

In this embodiment, the users may be divided into different categories according to the attributes of the users in advance, so that the user identifiers of the respective users corresponding to each category may constitute the user identifier set corresponding to each category. The attributes of the user can be various attributes. As an example, the attributes of the user include but are not limited to: age, gender, occupation, hobbies, city, etc.

The preset user identification set may be a user identification set preset by a technician according to actual application requirements.

It should be understood that each preset user identification set may have a corresponding set identification to identify the set. The form of the set operation expression can be various and can be selected according to the actual application scenario.

For example, the set operation expression may be composed of a set identifier and a set operator respectively corresponding to at least one preset user identification set. Of course, the set operation expression may also be a set operation on at least one preset user identification set described in language.

As an example, the set operation expression may be: A∩B. Among them, "A" and "B" respectively represent a preset user identification set. "∩" means intersection. Then the set operation expression A∩B can represent the intersection of calculating the preset user identification set "A" and the preset user identification set "B". The set operation expression can also be described in language: the intersection of the preset user identification set "A" and the preset user identification set "B".

In this embodiment, the executive body of the method for pushing information (the server 103 shown in FIG. 1) may obtain candidates from other terminal devices (the

terminal devices

101 and 102 shown in FIG. 1) by using a wired connection or a wireless connection Set operation expression set.

The candidate set operation expression may be any set operation expression. In practice, the technician may designate at least one set operation expression as a candidate set operation expression. Candidate set operation expressions can also be determined according to actual application scenarios. For example, the set operation expression received by the execution subject within a certain period of time may be determined as a candidate set operation expression.

In an embodiment, the above-mentioned execution subject may send or display information such as the category of the user indicated by each preset user identification set in at least one preset user identification set to other terminal devices. Other terminal devices can construct a set operation expression that meets the actual application requirements according to the actual application requirements, and send them to the above-mentioned execution subject.

Of course, the above-mentioned executor can store it locally after receiving the set operation expression, or the above-mentioned executor can first obtain the relevant information of the actual application requirements of other terminal devices, and then the above-mentioned executors can according to the actual application requirements of other terminal devices Construct a set operation expression that meets actual application requirements. At this time, the above execution subject can directly obtain the set operation expression set from the local.

In step 202, for the candidate set operation expression in the candidate set operation expression set, in response to the push instruction corresponding to the received candidate set operation expression, the following

steps

2021 and 2022 are performed.

In this embodiment, other terminal devices (such as the

terminal devices

101 and 102 shown in FIG. 1) may send a push instruction for the candidate set operation expression to the above-mentioned execution subject. The push instruction may be set to instruct to push the target information to the terminal device (

terminal devices

104 and 105 shown in FIG. 1) used by the user indicated by the operation result set of the candidate set operation expression.

Wherein, since the candidate set operation expression can represent the set operation of at least one preset user identification set, the operation result set of the candidate set operation expression can refer to performing the corresponding set operation in the expression on the at least one preset user identification set The operation result obtained afterwards. Among them, the push instruction can specify target information.

In an embodiment, the execution subject may display each candidate set operation expression in the candidate set operation expression set, and then the user (such as the user corresponding to the terminal device 101, 102) selects the candidate set operation expression. The above-mentioned execution subject may also display the pushable information to the above-mentioned user, and the above-mentioned user may select the information to be pushed. After that, the user may issue a push instruction to the user who is indicated by the operation result set of the selected candidate set operation expression to the execution subject.

In step 2021, it is determined whether the operation result set of the candidate set operation expression is an empty set.

In this embodiment, the execution subject may obtain at least one preset user identification set corresponding to the candidate set operation expression from a local or communication-connected database (database 106 shown in FIG. 1). Of course, the above-mentioned execution subject may also obtain at least one preset user identification set corresponding to the candidate set operation expression from other storage devices.

Then, according to the operation relationship between the at least one preset user identification set represented by the candidate set operation expression, the corresponding set operation can be performed on the acquired at least one preset user identification set to complete the candidate set operation expression The set operation represented by the formula obtains the operation result set of the candidate set budget expression.

After the operation result set is obtained, whether the operation result set is an empty set can be determined by determining whether the number of user IDs included in the operation result set is zero. Based on the judgment result of judging that the number of user identifiers contained in the operation result set is zero, it is determined that the operation result set is an empty set. Based on the judgment result of judging that the number of user identifiers included in the operation result set is not zero, it is determined that the operation result set is not an empty set.

In step 2022, in response to determining that the operation result set of the candidate set operation expression is not an empty set, the target information is pushed to the terminal device used by the user indicated by the operation result set of the candidate set operation expression.

In this embodiment, since the candidate set operation expression is a set operation on at least one user identification set, if the operation result set of the candidate set operation expression is not an empty set, it means that the operation result set contains at least one user Logo. At this time, the target information may be pushed to the terminal device used by the user indicated by the user identifier included in the calculation result set.

In some implementation manners of this embodiment, in response to determining that the operation result set of the candidate set operation expression is an empty set, prompt information for notifying that target information cannot be pushed may be output.

In some implementations of this embodiment, after pushing the target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression, the operation result of the candidate set operation expression obtained before may also be deleted set.

Since the operation result set for storing the candidate set operation expression requires a certain amount of storage resources, and the operation result set for the candidate set operation expression may not be used for a certain period of time after that, based on this, after completing the target information After pushing, you can delete the obtained operation result set to save storage resources.

Referring to FIG. 3, FIG. 3 is a schematic diagram 300 of an application scenario of the method for pushing information according to this embodiment. In the application scenario of FIG. 3, the above-mentioned execution subject may first obtain the candidate set operation expression set 301. As shown in the figure, the candidate set operation expressions included in the candidate set operation expression set include: A∩B, A∩B∪C, D∩E, and so on. Among them, A, B, C, D, E, etc. are preset user identification sets. These user identification sets may be stored in a database 303 that is communicatively connected to the above-mentioned executive body.

The above-mentioned execution subject can show the candidate set operation expression in the candidate set operation expression set 301 to the user. If the user selects the candidate set operation expression among them: A∩B, and sends the user indicated to A∩B to the above-mentioned execution subject Push instruction 302 of push information M. The above-mentioned execution subject may obtain the user identification set A and the user identification set B from the database 303.

As indicated by reference number 304 in the figure, user identification set A includes two user identifications of user 1 and user 2. User ID set B includes two user IDs, user 1 and user 3. It can be determined that the intersection of the user identification set A and the user identification set B is user 1 (as indicated by reference number 305 in the figure).

Then, the information M (reference number 307 in the figure) may be pushed to the terminal device 306 used by the user indicated by the user 1.

The method provided by the above embodiment of the present application determines the push instruction by storing only the candidate set operation expression set and the preset user identification set, and receiving the push instruction corresponding to the candidate set operation expression in the candidate set operation expression set The corresponding candidate set operates on the operation result set of the expression, and if the operation result set is not an empty set, a push instruction is executed to complete the information push. This method does not need to calculate and store the operation result set of each candidate set operation expression in advance, thereby greatly saving storage resources. In addition, since the calculation result set of the candidate set operation expression is calculated only when the push instruction is received, when the preset user identification set is updated, the calculation result set of the calculated candidate set operation expression is naturally the latest The result of the data consistency between the operation result set of the candidate set operation expression and the corresponding preset user identification set is guaranteed.

Referring to FIG. 4, it shows a flow 400 of yet another embodiment of a method for pushing information. The process 400 of the method for pushing information includes steps 401 to 402.

In step 401, a candidate set operation expression set is obtained.

For the execution process of this step 401, reference may be made to the relevant description of step 201 in the embodiment corresponding to FIG. 2, and details are not described herein again.

In step 402, for the candidate set operation expression in the candidate set operation expression set, in response to the push instruction corresponding to the received candidate set operation expression, the following

steps

4021, 4022, and 4023 are performed.

In step 4021, the main disjunctive normal form for propositions indicating that the operation result set of the candidate set operation expression is an empty set is determined.

In this step, various methods of finding the main disjunctive normal form (such as deduction method, truth table method, construction tree method, etc.) in the related art can be used to determine the operation result set used to express the candidate set operation expression as The main disjunctive paradigm of the proposition of the empty set.

In step 4022, it is determined whether the operation result set of the candidate set operation expression is an empty set according to the main disjunctive normal form.

In this step, the main disjunctive paradigm is expressed as the disjunction of multiple minimum terms. Therefore, as long as the operation result set of a minimal item is not an empty set, the operation result set of the candidate set operation expression is not an empty set.

In an embodiment, multiple minimum items may be sorted first. For example, multiple minimum items can be sorted by technicians or randomly. After that, according to the scheduled order, first determine whether the operation result set of the first minimum item is an empty set. Based on the judgment result that the operation result set of the first minimum item is not the empty set, it can be determined that the operation result set of the candidate set operation expression is not the empty set. Based on the judgment result that the operation result set of the first minimum item is an empty set, it is determined whether the operation result set of the second minimum item is an empty set. Based on the judgment result that the operation result set of the second minimum item is not the empty set, it can be determined that the operation result set of the candidate set operation expression is not the empty set. Based on the judgment result that the operation result set of the second minimum item is an empty set, determine whether the operation result set of the third minimum item is an empty set, and so on.

By analyzing the method of the main disjunctive normal form to determine whether the operation result set is an empty set, the operation speed can be greatly improved. In many cases, it is only necessary to judge the operation result set of some minimum items, and then it can be determined that the operation result set is not an empty set. Therefore, in this way, it can be quickly determined whether the push information is executable this time, so that when the push information is executable, the relevant prompt information can be returned to the user quickly, thereby reducing the response delay of the user terminal.

In step 4023, in response to determining that the operation result set of the candidate set operation expression is not an empty set, acquire at least one preset user identification set corresponding to the candidate set operation expression, and use the acquired at least one preset user The identification set completes the set operation represented by the candidate set operation expression to obtain an operation result set of the candidate set operation expression, and pushes target information to the terminal device used by the user indicated by the obtained operation result set.

For the execution process of this step 4023, reference may be made to the relevant description of step 202 in the embodiment corresponding to FIG. 2, and details are not described herein again.

As can be seen from FIG. 4, compared with the embodiment corresponding to FIG. 2, the process 400 of the method for pushing information in this embodiment highlights that the method of seeking the main disjunctive normal form can be used to speed up the operation of determining the candidate set operation expression The speed of whether the result set is an empty set.

Referring to FIG. 5, as an implementation of the method shown in the above figures, the present application provides an embodiment of a device for pushing information. The device embodiment corresponds to the method embodiment shown in FIG. 2, and the device can be applied Used in various electronic devices.

As shown in FIG. 5, the apparatus 500 for pushing information provided in this embodiment includes an obtaining unit 501 and a pushing unit 502. The obtaining unit 501 is configured to obtain a candidate set operation expression set, wherein the candidate set operation expression in the candidate set operation expression set is used to represent a set operation on at least one preset user identification set; the pushing unit 502 is configured For the candidate set operation expression in the candidate set operation expression set, in response to receiving the push instruction corresponding to the candidate set operation expression, it is determined whether the operation result set of the candidate set operation expression is an empty set, wherein, push The instruction is set to instruct to push target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression; in response to determining that the operation result set of the candidate set operation expression is not an empty set, the operation is performed to the candidate set The terminal device used by the user indicated by the operation result set of the expression pushes the target information.

In this embodiment, in the device 500 for pushing information: the processing of the obtaining unit 501 and the pushing unit 502 and the technical effects brought about by them can refer to the relevant descriptions of step 201 and step 202 in the corresponding embodiment of FIG. This will not be repeated here.

In some implementations of this embodiment, the pushing unit 502 is configured to: in response to determining that the operation result set of the candidate set operation expression is an empty set, output prompt information for prompting that the target information cannot be pushed.

In some implementations of this embodiment, the pushing unit 502 is configured to: obtain at least one preset user identification set corresponding to the candidate set operation expression; and use the acquired at least one preset user identification set to complete the candidate set Set operation represented by the operation expression to obtain the operation result set of the candidate set operation expression, and determine whether the obtained operation result set is an empty set.

In some implementations of this embodiment, the pushing unit 502 is configured to: determine the main disjunctive normal form of the proposition indicating that the operation result set of the candidate set arithmetic expression is an empty set; determine the candidate set operation according to the main disjunctive normal form Whether the operation result set of the expression is an empty set.

In some implementations of this embodiment, the pushing unit 502 is configured to: obtain at least one preset user identification set corresponding to the candidate set operation expression; and use the acquired at least one preset user identification set to complete the candidate set The set operation represented by the operation expression is used to obtain an operation result set of the candidate set operation expression, and the target information is pushed to the terminal device used by the user indicated by the obtained operation result set.

In some implementations of this embodiment, the apparatus for pushing information further includes a deletion unit (not shown in the figure) configured to delete the obtained operation result set of the candidate set operation expression.

The apparatus provided in the above embodiments of the present application obtains a candidate set operation expression set through an obtaining unit, wherein the candidate set operation expression set in the candidate set operation expression set is used to represent a set operation on at least one preset user identification set; The push unit determines whether the operation result set of the candidate set operation expression is an empty set in response to receiving the push instruction corresponding to the candidate set operation expression in the candidate set operation expression set, wherein, The push indication is set to instruct to push target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression; in response to determining that the operation result set of the candidate set operation expression is not an empty set, to the candidate set The terminal device used by the user indicated by the operation result set of the operation expression pushes the target information, so that when the push instruction is received, the corresponding candidate set operation expression is operated to determine the push object of the target information, thereby avoiding The situation that all the candidate set operation expressions determine the corresponding operation result set in advance and consume too much storage resources.

6, which shows a schematic structural diagram of a computer system 600 suitable for implementing the server of the embodiment of the present application. The server shown in FIG. 6 is only an example, and should not bring any limitation to the functions and usage scope of the embodiments of the present application.

As shown in FIG. 6, the computer system 600 includes a central processing unit (Central Processing Unit, CPU) 601, which can be loaded into a random unit according to a program stored in a read-only memory (Read-Only Memory, ROM) 602 or from the storage section 608 The program in the memory (Random Access Memory) 603 is accessed to perform various appropriate actions and processes. In the RAM 603, various programs and data necessary for the operation of the system 600 are also stored. The CPU 601, ROM 602, and RAM 603 are connected to each other through a bus 604. An input/output (Input/Output, I/O) interface 605 is also connected to the bus 604.

The following components are connected to the I/O interface 605: input section 606 including keyboard, mouse, etc.; including output section 607 such as cathode ray tube (Cathode Ray Tube, CRT), liquid crystal display (Liquid Crystal Display, LCD), etc. and speakers A storage section 608 including a hard disk, etc.; and a communication section 609 including a network interface card such as a local area network (Local Area Network, LAN) card, modem, etc. The communication section 609 performs communication processing via a network such as the Internet. The driver 610 is also connected to the I/O interface 605 as needed. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like, is installed on the drive 610 as necessary, so that the computer program read out therefrom is installed into the storage section 608 as needed.

In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart may be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product that includes a computer program carried on a computer-readable medium, the computer program containing program code for performing the method shown in the flowchart. In such an embodiment, the computer program may be downloaded and installed from the network through the communication section 609, and/or installed from the removable medium 611. When the computer program is executed by the central processing unit (CPU) 601, the above-mentioned functions defined in the method of the present application are executed.

It should be noted that the computer-readable medium of the present application may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections with at least one wire, portable computer disk, hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable only Read memory (Erasable Programmable Read-Only Memory, EPROM or flash memory), optical fiber, portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), optical storage device, magnetic storage device, or any suitable combination. In this application, the computer-readable storage medium may be any tangible medium that contains or stores a program, and the program may be used by or in combination with an instruction execution system, apparatus, or device. In this application, the computer-readable signal medium may include a data signal that is propagated in a baseband or as part of a carrier wave, in which a computer-readable program code is carried. This propagated data signal can take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. The computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, and the computer-readable medium may send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. . The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the foregoing.

The flowcharts and block diagrams in the drawings illustrate the possible implementation architecture, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and the module, program segment, or part of the code contains at least one Execute instructions. It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks represented in succession may actually be executed in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts, can be implemented with dedicated hardware-based systems that perform specified functions or operations Or, it can be realized by a combination of dedicated hardware and computer instructions.

The units described in the embodiments of the present application may be implemented in software or hardware. The described unit may also be provided in the processor. For example, it may be described as: a processor including an acquisition unit and a deletion unit. Among them, the names of these units do not constitute a limitation on the unit itself under certain circumstances. For example, the acquisition unit can also be described as a unit that acquires a candidate set operation expression set, where the candidate set operation expression set The candidate set operation expression is set to indicate a set operation on at least one preset user identification set".

As another aspect, the present application also provides a computer-readable medium, which may be contained in the server described in the foregoing embodiments; or may exist alone without being assembled into the server. The computer-readable medium carries at least one program, and when the at least one program is executed by the server, the server is caused to obtain a candidate set operation expression set, wherein the candidate set operation expression set in the candidate set operation expression set Yu means set operations on at least one preset user identification set; for the candidate set operation expression in the candidate set operation expression set, in response to receiving the push instruction corresponding to the candidate set operation expression, the candidate set operation expression is judged Whether the operation result set of the formula is an empty set, where the push indication is set to instruct to push target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression; in response to the determination of the candidate set operation expression The operation result set is not an empty set, and the target information is pushed to the terminal device used by the user indicated by the operation result set of the candidate set operation expression.

Claims

A method for pushing information, including:

Acquiring a candidate set operation expression set, wherein the candidate set operation expression in the candidate set operation expression set is used to represent a set operation on at least one preset user identification set;

For the candidate set operation expression in the candidate set operation expression set, in response to receiving the push instruction corresponding to the candidate set operation expression, determine whether the operation result set of the candidate set operation expression is an empty set, Wherein, the push instruction is set to instruct to push target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression; in response to determining that the operation result set of the candidate set operation expression is not empty Set, pushing target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression.
The method of claim 1, further comprising:

In response to determining that the operation result set of the candidate set operation expression is an empty set, output prompt information for prompting that the target information cannot be pushed.
The method according to claim 1, wherein the determining whether the operation result set of the candidate set operation expression is an empty set includes:

Acquiring at least one preset user identification set corresponding to the candidate set operation expression;

Use the acquired at least one preset user identification set to complete the set operation represented by the candidate set operation expression to obtain an operation result set of the candidate set operation expression, and determine whether the obtained operation result set is empty set.
The method according to claim 1, wherein the determining whether the operation result set of the candidate set operation expression is an empty set includes:

Determining the main disjunctive normal form of the proposition for indicating that the operation result set of the candidate set operation expression is an empty set;

According to the main disjunctive normal form, determine whether the operation result set of the candidate set operation expression is an empty set.
The method according to claim 4, wherein the pushing of the target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression includes:

Acquiring at least one preset user identification set corresponding to the candidate set operation expression;

Use the acquired at least one preset user identification set to complete the set operation represented by the candidate set operation expression to obtain an operation result set of the candidate set operation expression, and indicate the user to the obtained operation result set The terminal device used pushes target information.
The method according to claim 3 or 5, after pushing the target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression, further comprising:

Deleting the obtained operation result set of the candidate set operation expression.
A device for pushing information, including:

An acquiring unit configured to acquire a candidate set operation expression set, wherein the candidate set operation expression in the candidate set operation expression set is used to represent a set operation on at least one preset user identification set;

A pushing unit, configured to determine the operation result of the candidate set operation expression in response to receiving a push instruction corresponding to the candidate set operation expression in the candidate set operation expression set Whether the set is an empty set, wherein the push indication is set to instruct to push target information to the terminal device used by the user indicated by the operation result set of the candidate set operation expression; in response to determining that the candidate set operation expression The operation result set is not an empty set, and the target information is pushed to the terminal device used by the user indicated by the operation result set of the candidate set operation expression.
The apparatus according to claim 7, wherein the pushing unit is configured to:

In response to determining that the operation result set of the candidate set operation expression is an empty set, output prompt information for prompting that the target information cannot be pushed.
The apparatus according to claim 7, wherein the pushing unit is configured to:

Acquiring at least one preset user identification set corresponding to the candidate set operation expression;

Use the acquired at least one preset user identification set to complete the set operation represented by the candidate set operation expression to obtain an operation result set of the candidate set operation expression, and determine whether the obtained operation result set is an empty set .
The apparatus according to claim 7, wherein the pushing unit is configured to:

Determining the main disjunctive normal form of the proposition for indicating that the operation result set of the candidate set operation expression is an empty set;

According to the main disjunctive normal form, determine whether the operation result set of the candidate set operation expression is an empty set.
The apparatus according to claim 10, wherein the pushing unit is configured to:

Acquiring at least one preset user identification set corresponding to the candidate set operation expression;

Use the acquired at least one preset user identification set to complete the set operation represented by the candidate set operation expression to obtain an operation result set of the candidate set operation expression, and indicate the user to the obtained operation result set The terminal device used pushes target information.
The device according to claim 9 or 11, further comprising:

The deleting unit is configured to delete the obtained operation result set of the candidate set operation expression.
A server, including:

At least one processor;

A storage device on which at least one program is stored;

When the at least one program is executed by the at least one processor, the at least one processor implements the method according to any one of claims 1-6.
A computer-readable medium on which a computer program is stored, which when executed by a processor implements the method according to any one of claims 1-6.