CN113496350A - Block chain-based multi-task publisher-oriented crowdsourcing implementation method - Google Patents
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Abstract
The invention discloses a block chain-based multi-task publisher-oriented crowdsourcing implementation method, and belongs to the technical field of block chains. The technical scheme of the invention is as follows: configuring a user registration contract, a crowd-sourced task creation intelligent contract, a task selection contract, a worker selection contract and a quality evaluation intelligent contract on the blockchain platform, and realizing crowd-sourced publishing for multitaskers, confirmation of participating workers and evaluation of task completion conditions and rewards thereof based on a plurality of configured intelligent contracts. The invention provides a crowd-sourcing method facing multitaskers based on a block chain technology, aiming at the problems that a traditional crowd-sourcing platform is lack of transparency, high cost is needed for participating in a crowd-sourcing process and the like, so that reasonable selection of workers on crowd-sourcing tasks is realized, reasonable issuing of reward of the crowd-sourcing tasks is guaranteed, and the risk brought to a crowd-sourcing task execution process by a traditional centralized platform is avoided.
Description
Technical Field
The invention belongs to the technical field of block chains, and particularly relates to a block chain-based multi-task publisher-oriented crowdsourcing implementation method.
Background
With the rapid popularization of wireless sensor devices, the internet of things technology further deepens the understanding and comprehension of the physical world. As an important component of the conventional internet of things, the use of a fixed-location sensing manner similar to a wireless sensor network has become a main method for collecting data. However, such conventional data collection methods have difficulty meeting the diversity of data sensing requirements in most real-world situations. There is a pressing need to develop a new method that is different from the traditional data collection method. In recent years, a series of mobile terminal devices, such as smart phones and tablets, have become an indispensable part of people's daily life. These terminal devices have certain sensing, computing and storage functions and can replace traditional fixed iot (internet of things) sensors to collect more sensing data in real scenarios.
At present, a plurality of relatively mature centralized crowdsourcing methods are generated at home and abroad, but the crowdsourcing methods are extremely dependent on a third-party trusted platform, so that the following two problems are caused: (1) the platform lacks transparency to perform tasks assignment, reward distribution, etc.; (2) platform maintenance and maintenance requires high costs, where service fees need to be charged to users, which reduces the interest of users to participate in the crowdsourcing process.
Disclosure of Invention
The invention provides a block chain-based multi-task publisher oriented crowdsourcing implementation method aiming at the problems that a traditional crowdsourcing platform lacks transparency, high cost is needed for participating in a crowdsourcing process and the like, so that reasonable selection of workers on crowdsourcing tasks is achieved, reasonable issuing of reward of the crowdsourcing tasks is guaranteed, and the risk brought to a crowdsourcing task execution process by a traditional centralized platform is avoided.
The technical scheme adopted by the invention is as follows:
a block chain-based multi-task publisher-oriented crowdsourcing implementation method comprises the following steps:
configuring intelligent contracts such as user registration contracts, crowd-sourced task creation intelligent contracts, task selection contracts, worker selection contracts and quality evaluation intelligent contracts on a block chain platform;
the system comprises a user registration contract, a user identification contract and a user identification contract, wherein the user registration contract is used for user registration, identity authentication and login;
the crowdsourcing tasks create intelligent contracts for publishing crowdsourcing tasks in a blockchain network, and the published content includes: task content, worker requirements, assessment criteria of task results, and reward budget of tasks;
the task selection contract is used for discovering crowdsourcing tasks issued in the block chain network, pushing the crowdsourcing tasks to corresponding nodes in the block chain network and confirming receiving nodes;
the worker selection contract is used for selecting a worker node for executing the currently issued crowdsourcing task based on a preset selection strategy;
the quality evaluation intelligent contract is used for evaluating and grading the task result and distributing the task reward based on a preset evaluation strategy;
each node of the block chain network executes task issuing processing by adopting the following steps:
step S1: a node where a task publisher is located calls a user registration contract, if the node is an unregistered user, login is carried out after login based on the user registration contract, and if the node is a registered user, login is carried out based on the user registration contract;
step S2: the node where the task publisher is located calls a crowdsourcing task to create an intelligent contract to publish the task, and the publishing content comprises the following steps: task content, worker requirements, assessment criteria of task results and reward budget of tasks;
step S3: when a task selection contract discovers a crowdsourcing task issued in a block chain network, the task selection contract completes the task based on the history of each node in the block chain network, determines a recommendation node of the current crowdsourcing task and pushes the current crowdsourcing task to the recommendation node;
or the nodes in the block chain network actively call a task selection contract to obtain the currently issued crowdsourcing task;
step S4: a node receiving or acquiring the currently issued crowdsourcing task calls a task selection contract to confirm that the crowdsourcing task is accepted;
step S5: after each node sends a task receiving confirmation message, a worker selects a contract to select a worker node executing the current crowdsourcing task and informs the corresponding worker node;
step S6: the worker nodes participating in the task upload the task results to the block chain network, and after the task reaches the deadline, a quality evaluation intelligent contract is automatically triggered to evaluate and grade the task results uploaded by the worker nodes, so that the task reward is distributed;
step S7: the verifier node packs the transaction information of the current crowdsourcing task in the blockchain network into blocks, and issues the block chain network after reaching blockchain consensus, wherein the transaction information of the current crowdsourcing task comprises: task workers, task results, assessment ratings, and task rewards.
The technical scheme provided by the invention at least has the following beneficial effects: the invention realizes the reasonable selection of the crowdsourcing tasks by the workers, ensures the reasonable distribution of the reward of the crowdsourcing tasks, and avoids the risk brought to the execution process of the crowdsourcing tasks by the traditional centralized platform.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic processing procedure diagram of a block chain-based multi-task publisher-oriented crowdsourcing implementation method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The blockchain refers to a distributed account book which is composed of data blocks in a chain data structure in a sequential connection mode and is cryptographically guaranteed to be not falsifiable and counterfeitable, and the blockchain is a decentralized database and needs to be maintained by all processing nodes in a blockchain network. The data block stores two portions of data: at least one Block chain information and Block Header data (Block Header). Wherein, each blockchain information includes details of a transaction (e.g. transaction amount, account information or signature), the blockhead data includes information such as Root Hash (PrevHash) of the last data block, Root Hash (Root Hash) of the current data block, and the like. Since the data blocks are stored in a chain structure, once the blockchain information of a certain data block is changed, the Root Hash of the data block is changed, and the Root Hash of the data block is inconsistent with the Prev Hash of the next data block. Based on this, through the verification of the Prev Hash, the block chain information stored in the data block is ensured to be not falsifiable. Therefore, the blockchain system can be considered as a system which maintains a set of traceable and non-falsifiable chained data together through a consensus rule by computers which are not completely trusted with each other on a distributed network. Since the data and platform are not unilaterally controlled by any authority, the blockchain system can be regarded as a highly secure, highly reliable, trusted decentralized basic computing framework.
An intelligent contract is a program that is event driven, stateful, runs on a replicated, shared ledger, and can manage data on the ledger. The intelligent contract looks like a common computer-executed program, the code content of the intelligent contract specifies the rules and logic of transaction, and the user signs and calls the intelligent contract to mean that the contract content is executed and the execution result is written into an account book.
Referring to fig. 1, an embodiment of the present invention provides a block chain-based method for implementing crowdsourcing for a multitask publisher, including:
configuring intelligent contracts such as user registration contracts, crowd-sourced task creation intelligent contracts, task selection contracts, worker selection contracts and quality evaluation intelligent contracts on a block chain platform;
the system comprises a user registration contract, a user identification contract and a user identification contract, wherein the user registration contract is used for user registration, identity authentication and login;
the crowdsourcing tasks create intelligent contracts for publishing crowdsourcing tasks in a blockchain network, and the published content includes: task content, worker requirements, assessment criteria of task results, and reward budget of tasks;
the task selection contract is used for discovering crowdsourcing tasks issued in the block chain network, pushing the crowdsourcing tasks to corresponding nodes in the block chain network and confirming receiving nodes;
the worker selection contract is used for selecting a worker node for executing the currently issued crowdsourcing task based on a preset selection strategy;
the quality evaluation intelligent contract is used for evaluating and grading the task result and distributing the task reward based on a preset evaluation strategy;
each node of the block chain network executes task issuing processing by adopting the following steps:
step S1: a node (such as a node A) where a task publisher is located calls a user registration contract, if the node is an unregistered user, login is performed after login based on the user registration contract, and if the node is a registered user, login is performed based on the user registration contract;
step S2: the node A calls a crowdsourcing task to create an intelligent contract to issue the task, and the issuing content comprises the following steps: task content, worker requirements, assessment criteria for task results, and reward budget for tasks, among others;
step S3: when a task selection contract discovers a crowdsourcing task issued in a block chain network, the task is completed based on the history of each node in the block chain network, a recommendation node of the current crowdsourcing task is determined, and the current crowdsourcing task is pushed to the recommendation node, wherein the determination mode of the recommendation node can adopt any conventional recommendation mode, and the embodiment of the invention does not limit the mode;
or the nodes in the block chain network actively call a task selection contract to obtain the currently issued crowdsourcing task;
step S4: a node receiving or acquiring the currently issued crowdsourcing task calls a task selection contract to confirm that the crowdsourcing task is accepted;
that is, after a crowd-sourced task is published into a blockchain network, crowd-sourced task worker nodes interested in the task and nodes with knowledge of the task background are enabled to select to accept the task based on a task selection contract;
step S5: after each node sends a task receiving confirmation message, a worker selects a contract to select a worker node executing the current crowdsourcing task and informs the corresponding worker node;
step S6: before the deadline date of the task, worker nodes participating in the task upload task results to a block chain network, and automatically trigger a quality evaluation intelligent contract to evaluate and grade the task results uploaded by the worker nodes after the task reaches the deadline date, so as to distribute task rewards;
step S7: the verifier node packs the transaction information of the current crowdsourcing task in the blockchain network into blocks, and issues the block chain network after reaching blockchain consensus, wherein the transaction information of the current crowdsourcing task comprises: task workers, task results, assessment ratings, and task rewards.
In one possible implementation, the user registration contract specifically includes the following information: node basic information (optionally disclosing identity information), node address information, and node type information. The user registration contract can inquire about the task completion degree condition related to the node, the contract is published in the block chain platform, and all other nodes can inquire. Only the nodes which have performed the user registration contract can perform task issuing and receiving work in the blockchain network.
In one possible implementation, for a multi-task publisher, a work selection mechanism and a reputation score incentive mechanism are applied to achieve a two-way selection of task publisher-task worker. When the node selects the crowdsourcing task, the block chain network automatically calls a task selection contract, and recommends some tasks to the node based on the historical task completion information of the node. Meanwhile, the node can also query dependent tasks by querying keywords, and after knowing the content requirements of the tasks, the node can select a bidding contract.
In a possible implementation manner, when a worker selects a contract to select a node, the worker calls a node personal information contract to check whether the node meets the working standard set by the task publisher, and screens out the nodes meeting the requirement. The node personal information contract comprises historical information of the node for completing tasks, credit points of the node and personal basic information of the node.
In one possible implementation manner, the quality assessment contract is mainly responsible for summarizing task result data uploaded by the nodes, assessing task results, issuing task rewards and updating reputation scores. The updating of the credit score is based on the final status of the pass task and the quality of the solution by the staff. If the task is finally completed and is not cancelled, the credit score of the task publisher is improved; the solution submitted by the worker is evaluated by quality, and the credit score of the worker is improved. Based on the credit point excitation mechanism, bidirectional selection between the worker nodes and the task publisher nodes is realized, and the higher the credit point of the task publisher is, the more likely the published task is accepted by the worker; the higher the reputation score of a worker, the more likely it is that the execution conditions of the task are satisfied.
The embodiment of the invention can be used for issuing and executing management processing of information investigation tasks, such as investigating the main distribution condition of a certain epidemic disease patient population and the curative effect of medicines related to treating the disease. Referring to fig. 1, the specific implementation process is as follows:
the node (such as node A) where the task publisher is located firstly calls a user registration contract to perform identity authentication, if the node is a registered user, login authentication is performed, if the node is a non-registered user, registration is performed, and registration information is stored in a user identity data block. Then the node A calls a task creation contract to issue a crowdsourcing execution task; after a crowdsourced task is published into a blockchain network, crowdsourced task worker nodes (such as various medical institutions) interested in the task and nodes with knowledge of the task background are enabled to select to accept the task based on a task selection contract; for all nodes receiving the work tasks, screening nodes meeting the conditions based on a worker selection contract to serve as worker nodes (all medical institutions) participating in the tasks, and feeding back screening results to the worker nodes; after the task is completed, worker nodes participating in the task upload task results to the block chain network, when the task reaches a deadline, a quality evaluation contract is triggered to distribute rewards to the uploaded task results, and finally, verification nodes (appointed) in the block chain network package task transaction information (task workers, task results, evaluation grading and task rewards) are issued to the block chain network.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (3)
1. A block chain-based multi-task publisher-oriented crowdsourcing implementation method is characterized by comprising the following steps:
configuring a user registration contract, a crowd-sourced task creation intelligent contract, a task selection contract, a worker selection contract and a quality evaluation intelligent contract on a blockchain platform;
the system comprises a user registration contract, a user identification contract and a user identification contract, wherein the user registration contract is used for user registration, identity authentication and login;
the crowdsourcing tasks create intelligent contracts for publishing crowdsourcing tasks in a blockchain network, and the published content includes: task content, worker requirements, assessment criteria of task results, and reward budget of tasks;
the task selection contract is used for discovering crowdsourcing tasks issued in the block chain network, pushing the crowdsourcing tasks to corresponding nodes in the block chain network and confirming receiving nodes;
the worker selection contract is used for selecting a worker node for executing the currently issued crowdsourcing task based on a preset selection strategy;
the quality evaluation intelligent contract is used for evaluating and grading the task result and distributing the task reward based on a preset evaluation strategy;
each node of the block chain network executes task issuing processing by adopting the following steps:
step S1: a node where a task publisher is located calls a user registration contract, if the node is an unregistered user, login is carried out after login based on the user registration contract, and if the node is a registered user, login is carried out based on the user registration contract;
step S2: the node where the task publisher is located calls a crowdsourcing task to create an intelligent contract to publish the task, and the publishing content comprises the following steps: task content, worker requirements, assessment criteria of task results and reward budget of tasks;
step S3: when a task selection contract discovers a crowdsourcing task issued in a block chain network, the task selection contract completes the task based on the history of each node in the block chain network, determines a recommendation node of the current crowdsourcing task and pushes the current crowdsourcing task to the recommendation node;
or the nodes in the block chain network actively call a task selection contract to obtain the currently issued crowdsourcing task;
step S4: a node receiving or acquiring the currently issued crowdsourcing task calls a task selection contract to confirm that the crowdsourcing task is accepted;
step S5: after each node sends a task receiving confirmation message, a worker selects a contract to select a worker node executing the current crowdsourcing task and informs the corresponding worker node;
step S6: the worker nodes participating in the task upload the task results to the block chain network, and after the task reaches the deadline, a quality evaluation intelligent contract is automatically triggered to evaluate and grade the task results uploaded by the worker nodes, so that the task reward is distributed;
step S7: the verifier node packs the transaction information of the current crowdsourcing task in the blockchain network into blocks, and issues the block chain network after reaching blockchain consensus, wherein the transaction information of the current crowdsourcing task comprises: task workers, task results, assessment ratings, and task rewards.
2. The method of claim 1, wherein the user registration contract further comprises the following information: node basic information, node address information and node type information; and the task completion condition of the node can be inquired through the user registration contract.
3. The method of claim 1, wherein the quality assessment contract is used for aggregation of task result data, assessment of task results, issuance of task rewards, and updating of reputation points.
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