1805results about How to "Guaranteed effect" patented technology

The invention discloses a neural network model compression method and a neural network model compression device. The neural network model compression method comprises the steps of: determining a model parameter set of each neuron layer for each neuron layer in a neural network model, wherein the model parameter set includes a plurality of model parameters; carrying out first transformation on the plurality of model parameters to generate a plurality of intermediate parameters; quantizing the plurality of intermediate parameters according to a preset quantization step size to obtain a plurality of quantization parameters; selecting a plurality of sampling quantization points from the plurality of quantization parameters according to a preset quantization bit number; generating quantized values of the plurality of model parameters according to values of the plurality of quantization parameters and the plurality of sampling quantization points; and compressing and storing the plurality of model parameters according to the quantized values. The neural network model compression method can better maintain the effect of the model, greatly reduces the size of the neural network model, and reduces the occupation of computing resources, especially memory resources.

Disclosed is a vertical stabilisation mechanism (22) used for supporting a load (10). The vertical stabilisation mechanism (22) comprises parallelogram-shaped frames (221, 222, 223, 224) and an elastic piece (225). The adjacent edges of the frames (221, 222, 223, 224) are pivotally connected in such a way that included angles between the adjacent edges can vary. Two ends of the elastic piece (225) are connected to two of the adjacent edges of the frames (222, 223) respectively. The frames (221, 222, 223, 224) support the load (10) and balance the gravitational force of the load (10) by the elastic force of the elastic piece (225). Further disclosed are a tripod head device (20) and shooting equipment (100).

The invention discloses a multilayer quotation recommendation method based on a literature content mapping knowledge domain, and belongs to the field of information recommendation and intelligent information processing. The method comprises the following steps: firstly, obtaining the query requirement of a user, wherein the query requirement consists of the key words of the title and the digest of a thesis which needs to recommend a quotation thesis or quotation literature; then, on the basis of the literature content mapping knowledge domain, expanding and querying a retrieval word, wherein the mapping knowledge domain consists of the research object word and the research behavior word node of the literature, and edges which express various semantic relations including synonymy, synonym, an up and down position, part-whole, juxtaposition and the like; and finally, constructing the inverted index of the literature in a data set, selecting a candidate quotation, calculating the similarity between the candidate quotation and query, and adopting a gradient progressive regression tree to carry out quotation recommendation. The method carries out multilayer quotation recommendation on the basis of the literature content mapping knowledge domain, enlarges the range of the candidate quotation, accurately expresses the research object and contents of the thesis, improves efficiency for users to obtain a relevant literature and has a wide application prospect.

The invention discloses an epidemic situation predicting and early warning method of infectious diseases, particularly a network early warning system of relevant public health events of infectious diseases in countries, provinces, cities (regions) and districts (counties). The method comprises the steps of integrating adverse reaction information data which are collected by the server side, calculating and determining the early warning threshold of public health events according to the quantities of the symptoms of adverse reactions on the basis of the operation of a time sequence analysis statistic model and automatically carrying out early warning in real time at any time. The method comprises the following specific steps of: (1) integrating information from different channels; (2) executing a path I: analyzing tasks; and (3) executing a path II: predicting and early warning. Once the quantity of monitoring data meets the traditional basic requirements of a tome sequence analysis method for considering the periodicity, the seasonal nature, long term tend and the like of diseases, the conclusion having relative-high value can be obtained to play important roles of early finding epidemic situations, taking measures as soon as possible, preventing the spread of the epidemic situations and preliminarily establishing an epidemic situation monitoring and early warning system and a working mechanism of the province.

The invention discloses a pilotless helicopter, comprising a main rotor system, a swash plate device, a drive system, a starting device, an engine, a body frame, a tail rotor device, a landing device and at least one auxiliary lift, anti-twisting force and cooling functional device, wherein the auxiliary lift, anti-twisting force and cooling functional device comprises ducts and a lift fan, the lift fan is annularly embraced in the ducts, and the ducts are arranged symmetrical about a central axis which is the advancing direction of the pilotless helicopter; the ducts are fixed above the engine, and an air guide passage is designed below the ducts and guides air to a cylinder of the engine; and the swash plate device is a four-channel hybrid control swash plate device. A part of additional lift and anti-twisting force are provided for the pilotless helicopter by using the power of the cooling engine, so that the pilotless helicopter has larger effective load and higher efficiency. Four steering engines of the four-channel hybrid control swash plate device are arranged in a manner of backing up each other, so that the stability is improved.

Disclosed in the present invention a method for calculating channel quality indication information and a terminal thereof. The method involves performing channel measurement by terminal according to received cell state information-reference signal (CSI-RS) or cell reference signal (CRS), determining a channel state information (CSI) reference resource, and determining condition of calculating channel quality indication (CQI), then calculating CQI value corresponding to the CSI reference resource by terminal according to the determined condition and the measured result. The invention makes a reasonable set of the condition of calculating CQI, and ensures performance and effectiveness of the system link self-adaptation.

Provided is a method for moving carried out by a terminal in a wireless communication system. The method comprises estimating mobility status of the terminal, detecting a neighboring cell, calculating an expected dwell time in the neighboring cell which is detected, determining whether to set an adaptive mobility condition on the basis of the expected dwell time, and moving on the basis of the adaptive mobility condition when the adaptive mobility condition is determined to be set.

The invention provides a target tracking method based on Markov chains Monte-Carlo particle filtering, which comprises steps of: 1, obtaining a group of initial particles from initial distribution and setting the initial mean value and variance of the initial particles at initial time; 2, sampling importance; 3, updating a weight number; 4, obtaining a normalized weight number; 5, resampling; 6, introducing an MCMC (Markov Chains Monte-Carlo) movement step; and 7, updating status. By the MCMC movement step, the invention pushes particles to an area with larger prior distribution and posterior distribution, improves the diversity of the particles and inhibits the depletion problem of a sample to some extent. The solvent of the depletion problem of the sample ensures the effect of algorithm resample so as to further enhance the precision of filtering. The MCMC movement step is easy to realize, thereby being capable of combining with other improvement steps to optimize the particle filtering. The MCMC movement step is added to increase the workload of a filtering method and decreases number of particles needed in accurate estimation, thereby enhancing the filtering efficiency.

The invention provides a terminal which comprises a camera shooting unit, a judging unit, a prompt unit and a panoramic image generation unit. The camera shooting unit is used for shooting current images corresponding to current framing positions. The judging unit is used for identifying the current images shot by the camera shooting unit and judging whether the current images are dim or not. The prompt unit is used for prompting a user of the terminal to move the terminal to the current framing positions again so that the camera shooting unit can re-shoot new current images when the judging result of the judging unit shows that the current images are dim. The panoramic image generation unit is used for generating panoramic images according to the new current images and other images relevant to the new current images shot by the camera shooting unit. Correspondingly, the invention further provides an image processing unit. According to the technical scheme, the problems of curving and twisting of objects and other problems can be avoided in the panoramic image shooting process. Consequently, the effect of the panoramic images is guaranteed, and the successful rate of the panoramic image shooting is improved.

The invention relates to a lithium ion battery and especially relates to a functional additive-containing lithium ion battery and a preparation method thereof. The functional additive-containing lithium ion battery comprises an additive-containing electrode and an additive-containing electrolyte. The preparation method of the functional additive-containing lithium ion battery comprises adding one or more additives into an electrolyte in cell electrode homogenization, wherein a mass ratio of each one of the additive to active substances of the electrode is in a range of 0.05-0.5% and a mass ratio of each one of the additive to the electrolyte is in a range of 0.1-2.5%. The preparation method can improve lithium battery performances comprising cell safety performances such as normal temperature and high / low temperature cycle performances, high temperature resistance and overcharge resistance.

The invention relates to a balloon expandable stent with a side-hole channel, which belongs to the technical field of medical devices implantable into the blood vessel of human body. One end of the balloon is communicated with a balloon catheter that can inject and suck out contrast agent; an expandable compression stent is arranged outside the balloon; a main intracavity channel and an intracavity sub-channel are respectively arranged in the balloon and the balloon catheter; one opening of the main intracavity channel is positioned at the side wall of the balloon catheter, and the other opening is positioned at the top of the balloon; one opening of the intracavity sub-channel is positioned at the side wall of the balloon catheter, and the other opening is positioned at the side wall of the balloon; the expandable compression stent is provided with a side hole opposite to the side-wall hole of the balloon. The invention has the characteristics of simple structure, convenient operation and use, time saving and safety; meanwhile, the stent can break through the forbidden zone that the interventional therapy can not proceed due to the bifurcation and lesion of the blood vessel of brain, can simplify the steps of treating the bifurcation and lesion of the coronary artery, lower the operation risk and difficulty of stent-aiding embolism operation for wide-necked aneurysms, enhance interventional embolism / surgical clipping ratio, and alleviate patients' wound and pain.

An improved pipe wrench assembly includes a first and a second arms, a first and a second movable wrench members disposed on the front ends of the first and second arms respectively, a guide plate separately extended from the rear ends of the first and second movable wrench members, a sliding groove disposed on the guide plate, and an insert pin pivotally coupled in the sliding groove; wherein another end of the insert pin of the first movable wrench member is fixed to a second handle and another end of the insert pin of the second movable wrench member is fixed to a first handle. With the insert pin and the sliding groove, the first and second movable wrench members can produce a parallel clamping movement when the pipe wrench is clamped and released.

The invention relates to a preparation method of a petroleum degrading bacteria solid inoculant. The preparation method comprises the following steps: A, screening and domestication of the petroleum degrading bacteria; B, preparation of a seed culture solution; C, fermentation of the solid inoculant; and D, drying, pulverization, measurement and packaging of composted products. The petroleum degrading bacteria solid inoculant has the beneficial effect of improving the petroleum dissolution effect by taking a nonionic surfactantpolysorbate-80 (tween 80) as a solubilizer. The preparation method has the advantages that solid fermentation raw materials are easy to get and the process is relatively simple; and the solid inoculant contains a large amount of carbon and nutrient elements so as to provide more proper matrix for the growth of the bacteria, has strong affinity for the microorganisms, has immobilization efficiency, is capable of improving the competitiveness and degrading efficiency of the added microorganisms and indigenous microorganisms, and is convenient to transport and operate agriculturally and suitable for the large-scale in-situ biological remediation of the petroleum-polluted soil.

The invention discloses a micro-nano fiber grating laser writing method and a micro-nano fiber grating laser writing device. The method comprises the following steps of: tapering normal multi-mode fibers; manufacturing micro-nano fibers; and then taking 193 nm ultraviolet laser as a scribing means. The device comprises a fiber clamp, and an ArF excimer laser, a 45-degree full power reflector, a cylindrical lens and a phase mask plate which are sequentially arranged, wherein the ArF excimer laser is used for emitting 193 nm ultraviolet laser; the tapered fiber is fixed on the fiber clamp; micro-nano fiber regions of the fibers are arranged in front of the phase mask plate in parallel; the 193 nm ultraviolet laser emitted by the ArF excimer laser is reflected through the 45-degree full power reflector and then vertically emitted to the cylindrical lens; and the phase mask plate is arranged in front of the cylindrical lens. According to the method and the device, extra processing for the fibers is not required, the mechanical strength and the toughness of the fibers are kept, the cost is low, the scribing efficiency is high, the bandwidth is narrow, the mode is controllable and the repeatability is high.

An electrical connector for connecting a cable, includes an insulating body and a first terminal group received in the insulating body. The first terminal group includes a ground terminal, a power terminal, and first and second high-speed signal terminals. The first high-speed signal terminal has a first contacting portion, a first bending portion and a first soldering portion from front to rear. The extending direction of the first bending portion is different from that of the first contacting portion. The second high-speed signal terminal has a second contacting portion, a second bending portion, a reverse bending portion and a second soldering portion from front to rear. The second bending portion extends in a bending direction toward the first bending portion. The reverse bending portion reversely bends from the second bending portion. The spacing between the first and second soldering portions and the space for accommodating the cable are enlarged.

The invention discloses an inner barrel structure of a washing machine and a washing machine with the inner barrel. The inner barrel is coaxially arranged in an outer barrel of the washing machine; cleaning particles for cleaning the walls of the barrels are arranged between the inner barrel and the outer barrel; a flange plate is arranged at the bottom part of the inner barrel; the flange plate and a hollow area at the bottom part of the inner barrel form a permeable channel; a baffle cover for preventing the cleaning particles from entering into the inner barrel via the permeable channel is arranged between the bottom part of the inner barrel and the flange plate; a permeable hole is formed on the baffle cover corresponding to the permeable channel; the baffle cover is a hollow annular cover body; and a protruding main body at the centre of the flange plate correspondingly blocks a hollow position of the baffle cover, and the permeable hole is distributed at the position of the annular cover body corresponding to the permeable channel. According to the invention, the structure of the baffle cover is simple; the installation cost is low; the cleaning particles between the inner barrel and the outer barrel can be prevented from entering into the inner barrel, and the problem that the cleaning particles enter into the inner barrel to affect the barrel wall cleaning effect is avoided.

The invention discloses an unmanned aerial vehicle following system and a following flight control method. The unmanned aerial vehicle following system comprises an unmanned aerial vehicle body, a remote control device, a following module and a mobile terminal. The remote control device and the following module wirelessly communicate. The remote control device and the unmanned aerial vehicle body wirelessly communicate. The mobile terminal and the second communication module of the remote control device communicate in a wired or wireless way. The following flight control method comprises the steps that firstly, the unmanned aerial vehicle body is started, the remote control device is started, and the unmanned aerial vehicle body takes off and then suspends in the air; secondly, the following module is started, and a second positioning module can accurately acquire the position signal of the following module of the moment; thirdly, the mobile terminal is started, and a following mode is selected through a human-computer interactive interface; and fourthly, the unmanned aerial vehicle body performs automatic flight according to the selected following mode. With arrangement of the unmanned aerial vehicle following system, the unmanned aerial vehicle body can perform automatic flight by following the moving following module without controlling flight of the unmanned aerial vehicle through the remote control device so that operation is easy.

The invention discloses a route planning method for low-altitude medium- and long-distance ferry flights. The route planning method can plan a flight route with minimum flight cost for an aircraft, and multi-aircraft and multi-route collaborative task planning can be achieved herein. The route planning method is characterized in that a route is divided into a route-entering path P1, a flight path P2 and a route-exiting path P3; the route-entering path P1 and the route-exiting path P3 employ the shortest distances avoiding static threats; the flight on a flight path is a flight performed below a planned civil aviation route, and the shortest flight path is found by utilizing DijKstra algorithm; multiple aircrafts fly in a simulated manner on a digital map according the planned basic route; safety detection and warning are performed according to the current flight states of the aircrafts and the preset environment information on the digital map, and warning information is output; route optimization is finally performed according to the warning information.

The invention discloses an efficient-radiating self-cleaning computer. The efficient-radiating self-cleaning computer comprises a computer case. The lower end of the computer case is provided with two support legs. The right side of the computer case is provided with a sealed high-pressure air tank. The bottom in the computer case is provided with a horizontally arranged high-pressure air pipe. The high-pressure air pipe passes through a cooling water tank and is communicated with the high-pressure air tank. The cooling water tank is fixed on the computer case below the high-pressure air tank. Multiple self-rotating nozzles with upward openings are uniformly distributed on the high-pressure air pipe. The right end of the high-pressure air pipe is provided with a magnetic valve. The right wall in the computer case is provided with a temperature sensor and a dust sensor. The left side outside the computer case is provided with a controller. The design is rational, the structure is simple, the operation is convenient, the heat can be automatically radiated, and the radiating effect is good. While a lot of the dust is accumulated, the dust can be automatically cleaned under the situation without opening the computer case, the dust is conveniently collected and cleaned, the normal safe use of the computer is guaranteed, the service life of the computer is prolonged, and the failure rate and the maintenance cost are reduced.

The invention discloses a hardened optical thin film. A hardened coating with good optical property is uniformly coated on a transparent thin film base material. The hardened coating consists of 10-90 parts of ultraviolet curable resin, 10-30 parts of ultraviolet solid activity diluted resin, 2-15 parts of light initiator, 0-3 parts of flatting agent, and 10-90 parts of solvent. The hardened optical thin film disclosed by the invention has the advantages as follows: 1, the polyester has higher heat resistance, higher melting point and controllable degradation speed; 2, titanium dioxide sediments cannot be formed in a production process since the use amount of catalyst is small, so that the maintenance and replacement period of production equipment can be prolonged; 3, the vertical and transverse tearing intensities of the polyester material are higher; and 4, the structure of the polyester is easy to control, gel is difficult to form in a reaction process, and the processed film material has no crystal points which are formed by the gel.

The invention belongs to the field of electric fluid dynamics spray printing, and discloses a complex surface circuit conformal spray printing method and equipment. The equipment comprises a spherical motor module, a translation module and a conformal spray printing module. The translation module drives the spherical motor module to move in an X-axis direction and a Y-axis direction in a plane; the conformal spray printing module comprises a spray head part and an electric signal part; the spray head part moves up and down so as to realize a freedom degree of a Z-axis direction; the electric signal part applies voltage on an ink fluid and an electrode ring in an ink cartridge; the spherical motor module rotates around the X-axis direction, the Y-axis direction and the Z-axis direction so as to realize six-degree-of-freedom motion of an object to be spray-printed; a curve surface base plate is grounded, so that the electric potential of the object to be sprayed-printed is zero; and the voltage applied in the ink fluid is higher than the voltage applied in the electrode ring, so that a gradient electric potential difference is formed on the ink fluid, the electrode ring and the object to be spray-printed. Through the complex surface circuit conformal spray printing method and the equipment provided by the invention, a conformal patterning electric spray-printing process of a complex surface is realized, an application range of the electric spray-printing process is improved, the manufacturing cost is reduced, and the printing accuracy is improved.

The invention is suitable for the technical field of artificial intelligence, and provides a convolutional neural network model parameter processing method and system. The method comprises the following steps of extracting weight information of each data layer of a first convolutional neural network model; calculating a threshold of each data layer through a threshold calculation method; carrying out zero setting on weights through a zero setting method so as to obtain a second convolutional neural network model, and recording the total number of the zero-set weights; calculating a weight zero-setting rate; training and testing the second convolutional neural network model, and recording a test result; judging whether the second convolutional neural network model satisfies requirements or not according to the test result and the weight zero-setting rate; if the judging result is positive, outputting the second convolutional neural network model; and if the judging result is negative, returning to the former operations. According to the method and system provided by the invention, the convolutional neural network model parameters are sparse, so that the calculated amount of the convolutional neural network models during the application is decreased and the calculation efficiency is improved.

The invention discloses a full-automatic double-ccd (charge-coupled device) photosensitive element digital microscope, which is used for acquiring specimen image information by synchronously using a colored ccd photosensitive element and a black-and-white ccd photosensitive element so as to obtain a multifocal plane holographic three-dimensional image, synchronously outputting a specimen reading result according to nucleus integral optical density acquired by the black-and-white ccd photosensitive element, and finally outputting a specimen picture and text report. Additionally, the full-automatic double-ccd photosensitive element digital microscope comprises a slide uploading and unloading device and a horizontal migration clamping device for automatically changing the specimen slide, and then, the slide is located in three dimensions through a three-dimensional frame, so that the colored ccd photosensitive element and the black-and-white ccd photosensitive element can conveniently acquire the image information of the specimen. Thus, the full-automatic double-ccd photosensitive element digital microscope can be used for not only performing morphological observation on the specimen, but also taking digital images for a dyed tissue section so as to form the multi-focal plane holographic three-dimensional image, so that all the information of the cell can be observed in multiple layers and multiple focal planes, and accuracy of early diagnosis is greatly improved.

The present application discloses an automation testing method and system based on a test case data table. The method comprises: firstly, determining a single table attribute of a corresponding test case data table according to a to-be-tested service logic; next, establishing a corresponding table template according to the determined single table attribute; then, adding specific data into the table template according to a specific testing demand, so as to obtain the corresponding test case data table; and finally, performing an automation test on each to-be-tested service according to the obtained test case data table. Compared with the prior art, the reusability of the table template in the method disclosed by the present invention is strong, and generation and maintenance of the test case data table are simpler and more efficient, so that testing efficiency and testing effects of the automation test can be improved.

The invention relates to an adversarial defense method of an image classification network and a related devices and belongs to the technical field of image classification, and the method comprises thesteps: inputting an original image sample and an adversarial attack sample into a deep neural network, so as to extract the input features of a target layer, higher than a preset number of layers, ofthe deep neural network; generating a loss function of the deep neural network according to the input features to serve as an adversarial defense denoising device; utilizing the adversarial defense denoiser to denoise the adversarial attack sample to obtain a denoised adversarial attack sample; regularizing the loss function of the deep neural network to obtain a regularized deep neural network;and inputting the original image sample and the denoised countermeasure attack sample into the regularized deep neural network to obtain a classification result of the original image. According to thescheme, the defense capability of the image classification deep neural network can be effectively improved.

The invention discloses a neural network model stealing defense method in an AIoT scene. Application to the field of network safety, aIoT scenario, in order to solve the problem of model stealing caused by data leakage possibly occurring when edge end equipment transmits data to a cloud server, the invention realizes defense of model stealing by encrypting an inference data image and a label, an encrypted image part is based on a neural network class activation mapping technology, and an encrypted label part is based on an under-complete auto-encoder technology; the method mainly comprises a training stage and a deployment stage, the training stage is carried out on a server, the deployment stage is carried out after the training stage is completed, data of the training stage is deployed to edge end equipment and a cloud server, and the method can effectively prevent a neural network model in an AIoT scene from being stolen.

The invention relates to a specific target emotion classification task based on a graph neural network. The method comprises the following steps: acquiring a data set and initializing a BERT model; obtaining a one-dimensional feature vector of each target word through a BERT model; inputting the feature vector of the target word into a graph convolutional neural network model; constructing a network topological graph, calculating an adjacency matrix, obtaining three features of nodes in the network topological graph in three modes according to the adjacency matrix, introducing relation classification tasks,wherein the whole model is divided into two stages and two tasks in classification, and the two tasks are emotion polarity classification of target subjects and relation classificationbetween the target subjects respectively. According to the method, the graph neural network is adopted to compose a plurality of subjects appearing in sentences and process a plurality of targets at the same time, so that the cognitive law of judging emotion polarity by human beings is better met, the effect of a model is ensured, meanwhile, a relationship classification task is introduced for auxiliary classification, and the classification accuracy is further improved.

The invention discloses an anti-inflammation and allergy-relieving repair composition and a preparation method and an application thereof. The composition consists of a cactus extract, an oat bran extract, a sophorae flavescentis extract, an ophiopogon japonicus root extract, a peony root extract, a scutellaria baicalensis root extract, butanediol, pentanediol and water. The preparation method comprises the following steps: 1) preparing a sophorae flavescentis extract solution; 2) carrying out super-high pressure homogenization of the cactus extract, the oat bran extract, the ophiopogon japonicus root extract, the peony root extract, the scutellaria baicalensis root extract, butanediol and pentanediol to obtain a plant extract mixed solution; and 3) carrying out mixing, super-high pressurehomogenization and filtration of the plant extract mixed solution and the sophorae flavescentis extract solution. The anti-inflammation and allergy-relieving repair composition has anti-inflammatory,anti-allergic and analgesic effects, can enhance skin barrier function, enhances the skin self-protection ability, effectively repairs inflammatory skin, especially skins suffered from hormone-dependent dermatitis and cannot produce drug resistance, dependence and side effects after being used for a long time.

The invention relates to a calligraphy practicing system, which can compare calligraphy works in terminal equipment and reference fonts in a server. The calligraphy practicing system comprises a selection module used for starting a client of the terminal equipment to select a font to be practised, an acquisition module used for acquiring a picture of a calligraphy work of a practitioner, a recognition module used for recognizing and extracting characters in the picture of the calligraphy work, a searching module used for searching a corresponding reference font from a database according to the recognized characters, and a superposition module used for superposing the characters in the calligraphy work of the practitioner with characters in the reference font to form a superposed comparison picture. The practitioner can conveniently find problem points in the work to facilitate follow-up timely correction, and the calligraphy practicing effect is guaranteed. The invention further relates to a calligraphy practicing method.

The invention relates to a reduced-type polycarboxylic acid water reducer and a preparation method thereof. An esterification method is employed for synthesizing a reduced monomer having a low surfacetension, and the reduced polycarboxylic acid water reducer is prepared through polymerization; acid anhydride or unsaturated carboxylic acid and ethers molecules are subjected to an esterification reaction to prepare the reduced monomer under effect of a catalyst, and then the reduced monomer, nonsaturated polyoxyethylene ether, unsaturated carboxylic acid or a mixture of unsaturated carboxylic acid or its acid anhydride, and a molecular weight conditioning agent are subjected to a free radical copolymerization reaction under effect of an initiator. The method has the advantages of easy control, high yield, low cost, environmental protection, and no pollution. During a polymerization process, a reduced group is introduced, so that the water reducer has low surface tension, an anchoring group is introduced, has good cement slurry-cleaning fluidity under common doping, reduces the surface tension force of a cement aperture solution, and reduces evaporation rate of the solution so as toeffectively reduce the mortar contraction. The obtained water reducer presents good water-reducing and reduction characteristic.