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53 results about "Not evaluated" patented technology

A not evaluated (NE) species is one which has been categorised under the IUCN Red List of threatened species as not yet having been assessed by the International Union for Conservation of Nature. This conservation category is one of nine IUCN threat assessment categories for species to indicate their risk of global extinction. The categories range from 'extinct' (EX) at one end of the spectrum, to 'not evaluated' (NE) at the other.

Method and Apparatus for Automatic Notification and Response

A disclosed notification and response system enables applications to communicate with recipients using a number of different media. The notification and response system (i) sends requests to one or more recipients, using the medium specified by each individual recipient; (ii) collects and processes responses; and (iii) forwards the responses to their final destination by means of the medium specified by the final destination. Applications frame requests in at least one supported human language and media format, and the request is delivered to the appropriate recipient(s), according to their preferences Communication flow expressions specify the recipients for a given request, and how, when and where each recipient shall receive the request. Requests are dynamically updated, and the parameters of a communication flow expression are not evaluated, until the request is delivered. Communication flow rules specify recipient's communication preferences and tailor communication flows to characteristics of the sender, the topic or scheduling constraints. Communication flow expressions are evaluated using a three-valued logic: notification failure (maybe), response failure (false) and response success (true) Primitives specify simultaneous or sequential contact, and when execution of the sub-expression should terminate by defining a logical combination of success test results
Owner:AVAYA INC

Driver driving economy evaluation system and method

The embodiment of the invention discloses a driver driving economy evaluation system and a driver driving economy evaluation method, which solve the problem that the existing fuel economy evaluation method cannot evaluate the influence of actual operation of a driver on vehicle fuel economy. The system comprises an acquisition unit and a central processing unit. The acquisition unit comprises a first acquisition unit which is used for acquiring fuel consumption value influence information and a second acquisition unit which is used for acquiring an actual instantaneous fuel consumption value. The central processing unit comprises a vehicle condition storage unit, a first calculation unit and a comparison unit, wherein the vehicle condition storage unit is used for storing a corresponding relation among the fuel consumption value influence information, the most economic vehicle state and the most economic instantaneous fuel consumption value, the first calculation unit is used for calculating the most economic instantaneous fuel consumption valve corresponding to the fuel consumption value influence information acquired by the first acquisition unit according to the corresponding relation stored in the vehicle condition storage unit, and the comparison unit is used for comparing the actual instantaneous fuel consumption value with the most economic instantaneous fuel consumption value to obtain the economy level of the current driving.
Owner:WEICHAI POWER CO LTD

Electric power system operation reliability-centered equipment importance evaluation method

The invention relates to an electric power system operation reliability-centered equipment importance evaluation method. The method comprises the following steps of: 1, determining power transmission equipment needing to be evaluated; 2, selecting an element needing to be evaluated; 3, storing system initialization operating environment data; 4, restoring a system initialization operating environment; 5, evaluating an annual electric power system risk; 6, judging whether the number of specified operating times is reached or the calculation precision requirement is met, if the number of specified operating times is reached or the calculation precision requirement is met, entering a step 7, and if the number of specified operating times is not reached or the calculation precision requirement is not met, returning to the step 4; 7, counting system reliability and risk indicators; 8, judging whether all elements needing to be evaluated are evaluated, if all the elements needing to be evaluated are evaluated, entering a step 9, and if all the elements needing to be evaluated are not evaluated, returning to the step 2; and 9, counting element importance indicators, sequencing the element importance indicators, integrating corresponding economic indicators, safety indicators and environment indicators of a system after each equipment is launched, superimposing the economic indicators, the safety indicators and the environment indicators according to certain weight to obtain the corresponding overall indicators of the equipment, and sequencing the overall indicators.
Owner:SHANDONG ELECTRIC POWER RES INST +1

Triggering window conditions by streaming features of an operator graph

In a stream computing application, data may be transmitted between operators using tuples. However, the receiving operator may not evaluate these tuples as they arrive but instead wait to evaluate a group of tuples—i.e., a window. A window is typically triggered when a buffer associated with the receiving operator reaches a maximum window size or when a predetermined time period has expired. Additionally, a window may be triggered by a monitoring a tuple rate—i.e., the rate at which the operator receives the tuples. If the tuple rate exceeds or falls below a threshold, a window may be triggered. Further, the number of exceptions, or the rate at which an operator throws exceptions, may be monitored. If either of these parameters satisfies a threshold, a window may be triggered, thereby instructing an operator to evaluate the tuples contained within the window.
Owner:IBM CORP

Path planning method for robot leaded by global planner

InactiveCN109814557AOvercoming the inability to avoid transparent obstaclesIncrease success ratePosition/course control in two dimensionsRadarNot evaluated
The invention relates to a path planning method for a robot leaded by a global planner. The method comprises the following steps of SLAM, construction of the three-dimensional robot, robot locating, construction of a local raster map, setting of an end point, global path planning, local path planning, updating of global and local raster maps and updating of robot states. Evaluation for global pathplanning is cancelled, although there is the global planner, actually, a path generated by the global planner is not evaluated, an existing local path planner and an existing local path evaluator aremainly improved, and traditional evaluation factors are revised as the number of barriers, the straight-line distance between the path and the nearest barrier, the path curvature and the like, wherein distances between the barriers and the robot are less than some value (depending on the actual environment). According to the method, data of a laser radar and ultrasonic waves is combined, and theproblem that a robot based on the laser radar cannot avoid transparent barriers is solved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Method for testing rut resistance of multi-layered combined structure mixtures of bituminous pavements

InactiveCN102944488AOvercoming the Shortcomings of TrialsPerfect detection workMaterial strength using repeated/pulsating forcesRoad surfaceNot evaluated
The invention discloses a method for testing the rut resistance of multi-layered combined structure mixtures of bituminous pavements. The method utilizes a multi-layered combined structure bitumen mixture rut test mold to mold a rut test specimen in a layered mode, and then utilizes an improved conventional domestic rut instrument to carry out a rut test. According to a relation curve between rut depth and test wheel running time, the rut resistance of a bituminous pavement combined structure is evaluated. The method overcomes the defect that the conventional rut test can only evaluate the high-temperature performance of single-layered fixed-thickness bitumen mixtures and cannot evaluate and analyze the high-temperature performance of bitumen mixtures with different thicknesses and structural combinations, can carry out multi-layered combined structural bitumen mixture rut tests and accurately evaluate the influence of combined structures on the rut resistance of bituminous pavements under the action of vehicle load, and has important practical significance in perfecting the bituminous pavement test and design method of China.
Owner:CHANGAN UNIV

Triggering window conditions using exception handling

In a stream computing application, data may be transmitted between operators using tuples. However, the receiving operator may not evaluate these tuples as they arrive but instead wait to evaluate a group of tuples—i.e., a window. A window is typically triggered when a buffer associated with the receiving operator reaches a maximum window size or when a predetermined time period has expired. Additionally, a window may be triggered by a monitoring a tuple rate—i.e., the rate at which the operator receives the tuples. If the tuple rate exceeds or falls below a threshold, a window may be triggered. Further, the number of exceptions, or the rate at which an operator throws exceptions, may be monitored. If either of these parameters satisfies a threshold, a window may be triggered, thereby instructing an operator to evaluate the tuples contained within the window.
Owner:IBM CORP

Time-delay-evaluating method and device for mobile video service

The embodiment of the invention provides a time-delay-evaluating method and a time-delay-evaluating device for a mobile video service and is used for solving a technical problem that the prior art cannot evaluate distribution of a transmitting time delay of the mobile video service in each network segment or node. The method comprises the following steps of: matching a data packet on a first acquisition point with a data packet on a second acquisition point; dividing a transmission path of the service stream containing the data packet into at least two segments by the first acquisition point and / or the second acquisition point; and if the data packet on the first acquisition point is matched with the data packet on the second acquisition point, computing the time delay of the service stream of the data packet between the first acquisition point and the second acquisition point. Compared with the prior art, the invention has the advantages that: by matching the data packets on the acquisition points (not only a receiving end or a sending end), the time delay distribution of the video service can be evaluated according to the network segment and the network segment or network element with the time delay can be precisely located.
Owner:HUAWEI TECH CO LTD

Fan regulation and control method and device capable of optimizing power

The invention discloses a fan regulation and control method and device capable of optimizing power. The fan regulation and control method and device capable of optimizing power aim at solving the problem that in the prior art, the key point of the fan speed regulation strategy concerns about whether the temperature of a cooling part meets the requirement while the effect of the rotation speed of fans on the whole operation power consumption of a server is not evaluated completely and effectively. The fan regulation and control method capable of optimizing power comprises the steps of determining one or more fans for cooling a cooling part to be cooled down specific to the cooling part to be cooled down in a server; selecting one or more fans from the determined one or more fans for several times, regulating the rotation speed of each selected fan according to one or more fans selected every time, and recording the rotation speed and the power consumption of each selected fan when the temperature of the cooling part meets the preset temperature requirement; taking the fans selected by the time corresponding to the lowest power consumption in the obtained power consumption each time and the corresponding recorded rotation speed as the power consumption regulation and control strategy of the cooling part.
Owner:XFUSION DIGITAL TECH CO LTD

Quadrocopter-based detection device during mine disaster period

The present invention relates to the unmanned aerial vehicle-based environment detection technology and a method thereof during the mine disaster period. During the mine disaster period, such as the period of the gas outburst, the gas explosion, the fire disaster, the water inrush and other accidents in a mine, people cannot get into the mine, and an emergency rescue headquarter cannot evaluate the underground environment. In the prior art, a quadrocopter and an underground wireless positioning system are combined to realize the flight control and the data transmission of an unmanned aerial vehicle. The unmanned aerial vehicle is provided with a miniature infrared camera, a multi-parameter micro gas sensor, a temperature sensor, and a pressure sensor. The monitoring data of the onboard camera and multiple sensors can be recorded in a built-in storage. The unmanned aerial vehicle is provided with a micro self-contained power supply relay unit arranged along the detection line. The relay unit is compatible with an underground communication system and an unmanned aerial vehicle communication system, so that the communication transmission distance of the unmanned aerial vehicle is prolonged. Data stored in the storage are transmitted back to the ground through a wireless communication system. Therefore, disaster-relief basic parameters are provided.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Construction method and device of audit risk management information base

The application discloses a construction method and device of an audit risk management information base. The construction method and device of the audit risk management information base relate to the technical field of audit risk management, and are invented aiming at solving the problems that existing audits cannot evaluate an overall organization, prevent risks and improve operation efficiency. The main method comprises the following steps: obtaining a work draft; building an audit method sub base according to an audit method; building a law and regulation sub base according to a law and regulation system; generating risk points according to an audit problem; calculating risk attribute values of the risk points according to a preset quantitative analysis model; building a risk sub base according to the risk points and the risk attribute values; establishing association relationships between the risk points and the work draft audit method and between the risk points and the law and regulation system; building the audit risk management information base according to the association relationships, wherein the audit risk management information base comprises the work draft, the audit method sub base, the law and regulation sub base and the risk sub base. The method and device are mainly applied in an audit business risk judgment process.
Owner:YUNNAN POWER GRID +1

Aircraft noise monitoring method and device thereof

The invention provides an aircraft noise monitoring method and device. The method comprises the following steps of acquiring flight parameters and actual meteorological data of an aircraft in the monitoring environment, correcting a flight path of the aircraft at an airfield runway, acquiring a random predicted point, calculating a slant range between the aircraft and the random predicted point, calculating and obtaining effective perceived noise levels of the aircraft based on the maximum takeoff weight and the slant range of the aircraft, based on takeoff and landing aircraft times of each type aircraft obtained in advance at each airfield runway in a first period, calculating average values of the effective perceived noise levels of the aircraft, calculating and obtaining weighted equivalent continuous perceive noise levels based on takeoff and landing aircraft times of the aircraft in each second period and the average values of the effective perceived noise levels, a plurality of second periods are obtained in advance in the first period. By adopting the method, the problems that a traditional aircraft program noise monitoring method is accidental and can not evaluate the noise impact caused by aircraft noise objectively and accurately can be alleviated.
Owner:INST OF RADAR & ELECTRONICS CONFRONTATION ARMY AIR FORCE EQUIP RES INST OF PLA +1

Vacuum deposition method and sealed-type evaporation source apparatus for vacuum deposition

A vacuum deposition method is provided. In the vacuum deposition for evaporating a sublimation evaporation material, the gas sealed-type heating container 11 has the blast aperture 14 and an area for evaporating the evaporation material by the radiation heat from the inner surface thereof. The holder 15 holds an evaporation material in a region in which the evaporation material does not evaluate due to the heat transferred from the heating container 11 . Thus, the generated vapor is emitted from the blast aperture 14 into the deposition subject surface outside the container.
Owner:FUTABA CORPORATION

Method for evaluating toxicity and biodegradability of chemical wastewater

InactiveCN107192800AAvoid inherent problemsAccurate methodTesting waterMicroorganismWastewater
The invention discloses a method for evaluating the toxicity and the biodegradability of chemical wastewater and belongs to the field of water pollution control. Relative oxygen consumption is adopted to evaluate the biodegradability and the toxicity of chemical wastewater: (1) if STOD of a water sample to be detected is larger than 1, a matrix in wastewater has no toxicity and is biodegradable, and the larger the STOD value is, the better the biodegradability is; (2) if STOD of the water sample to be detected is equal to 1, the matrix in wastewater has no toxicity but is non-degradable; and (3) if STOD of the water sample to be detected is smaller than 1, the matrix in wastewater has toxicity and is non-degradable, and the smaller the STOD value is, the stronger the toxicity is. A method for measuring the oxygen consumption and the oxygen uptake rate of microbes in real time is adopted, so that errors caused by adopting a dilution multiple method to measure BOD5 are avoided, the problem that BOD5 cannot evaluate the toxicity of wastewater is solved, and the method provided by the invention is convenient and quick and can acquire measurement results within 20 min.
Owner:NANJING UNIV YANCHENG ENVIRONMENTAL PROTECTION TECH & ENG RES INST

Method for acquiring Internet of Vehicles connectivity index in urban road scene

The prior art can only evaluate the network connectivity at the time by means of indexes such as the vehicle density and cannot evaluate the stability and the effective duration of a link, thereby lacking consideration for dynamic changes of vehicles and the network stability. The invention provides a method for acquiring an Internet of Vehicles connectivity index in an urban road scene, which provides the link survival duration to act as a new measuring index for the connectivity of the Internet of Vehicles from the aspects of static connection characteristics and dynamic connection characteristics of the Internet of Vehicles in the urban road scene, thereby providing help for measuring the overall connectivity and the stability of the Internet of Vehicles in urban roads and designing a routing protocol.
Owner:TONGJI UNIV

Coarse-grained last-level caching bypass method

The invention relates to a coarse-grained last-level caching bypass method, which is named Global Bypass, and views the bypass as a policy choice equivalent to replacement instead of supplementation. The method is switched between a bypass mode and a replacement mode; in the bypass mode, all failures are bypast, and the access characteristic of each individual is not evaluated; and in the replacement mode, the Global Bypass uses the basic replacement algorithm of the last-level caching to replace, the basic replacement algorithm can be any existing replacement algorithm, and because the access characteristic of each individual is not needed to be evaluated, the realizing cost of the Global Bypass is low.
Owner:北京北大众志微系统科技有限责任公司

Firearm design scheme evaluation method based on fuzzy decision diagram and gray correlation analysis

The invention relates to a firearm design scheme evaluation method based on a fuzzy decision diagram and a gray correlation analysis. The method comprises the steps that 1, an evaluation index system of a firearm design scheme is created; 2, global weights of evaluation indexes are calculated based on the fuzzy decision diagram; 3, by means of the global weights, gray relational degrees of alternative schemes are calculated, and evaluation on the firearm design scheme is achieved according to the gray relational degrees. According to the method, the global weights of the evaluation indexes are obtained through the fuzzy decision diagram; the gray relational analysis serves as an evaluation subject method, the defects that the fuzzy decision diagram does not provide the scheme evaluation subject method, and the gray relational analysis can not evaluate the mutual effect among the evaluation indexes are overcome, advantage complementation between the fuzzy decision diagram and the gray relational analysis is achieved, and therefore a set of complete firearm design scheme evaluation method which can evaluate evaluation index comprehensive influence relationships is formed.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Fusion search system and method of housing resource information

The invention provides a fusion search system and method of housing resource information. The system comprises a housing resource search client side, a housing resource search server, a popularity analysis server and a group preference server. According to the fusion search system and method of the housing resource information, the abilities of the popularity analysis server and group preferenceserver are combined, a new popularity label and a group preference label are added on the basis of users search conditions, a user is constrained to select a group, and more accurate search results are searched fusionally through the fusion of the search conditions. The popularity label solves the problem that the user is insensitive to the housing resource heat degree information; and the group preference label solves the problems that the user is insensitive to housing resource trend information and the system cannot evaluate individual preference.
Owner:FUJIAN JIANGXIA UNIV

Teaching affair management system

InactiveCN109583752ASatisfy validityImprove the quality of classResourcesTime limitNot evaluated
The invention relates to the technical field of educational administration information management. The invention particularly relates to an educational administration management system. The system comprises a Student terminal, Teacher side and server side, Student terminal comprises an evaluation module, The server comprises a judgment module, Database and pushing module, the evaluation module isused for evaluating the teacher by the student; course evaluation time limit information is stored in the database; the judgment module is used for judging whether the evaluation time of the student exceeds the course evaluation time limit; According to the teaching affair management system, the problem that students in an existing teaching affair management system cannot evaluate the teacher in time and feed back the class quality of the teacher is solved, and the teaching affair management system is mainly used for the teacher to adjust the class mode in time according to the information fedback by the students.
Owner:CHONGQING UNIV OF ARTS & SCI

Portable wireless channel analyzer and wireless channel quality inspection method

ActiveCN103368672ASolve technical problems that cannot evaluate the quality of wireless channelsReduce volumeTransmission monitoringNot evaluatedEnergy intensity
The invention relates to a portable wireless channel analyzer which not only is convenient to carry, but also can be used for the field inspection of wireless channel quality, and a wireless channel quality inspection method. The portable wireless channel analyzer comprises a shell and a battery. A main controller bi-directionally exchanges data with a certain radio-frequency chip of different frequency bands through an analog switch. The main controller also bi-directionally exchanges data with a touch display screen. The portable wireless channel analyzer and the wireless channel quality inspection method have the advantages that the portable wireless channel analyzer can be used for scanning and analyzing the quality of each corresponding communication channel in the air, is suitable for technicians to check the state of the corresponding wireless channel during field installation of wireless equipment, can help the technicians to arrange the wireless equipment in the field and can realize interaction with users through an intelligent man-machine interaction interface; the technical problem that the technicians cannot evaluate the wireless channel quality in the field is solved, the size is small, the weight is light and the analyzer is convenient to carry; and through experiments, the energy intensity of each working channel in the current environment can be scanned through the radio-frequency chip and the goal of analyzing the channel quality is achieved.
Owner:LIERDA SCI & TECH GRP

Regional evaluation system for tuberculosis

InactiveCN105095685AImprove reliabilityAddressing the inability to effectively assess tuberculosis conditions in high-traffic healthcare settingsSpecial data processing applicationsNot evaluatedEngineering
The invention provides a regional evaluation system for tuberculosis and aims to overcome the defect that the conventional syndromic surveillance system cannot evaluate tuberculosis information of people floatable at any time in certain region. The regional evaluation system comprises a plurality of tuberculosis pre-evaluation modules, a plurality of audio acquisition modules distributed in a tuberculosis region, a plurality of orientable infrared temperature acquisition modules, a plurality of orientable ventilation modules, a temperature adjusting module, a humidity adjusting module and a plurality of tuberculosis re-evaluation modules. The regional evaluation system can monitor tuberculosis symptoms and acquire and evaluate information of the tuberculosis symptoms effectively on the basis of an induction mechanism, solves the problem that the tuberculosis symptoms in a medical location with larger mobility cannot be evaluated effectively in the prior art, and improves the reliability of regional evaluation of the medical location.
Owner:CHENGDU XINDAHE TECH

Deep soil mass load deformation test standard penetrometer and operation method thereof

InactiveCN107607405ASolve the problem of inability to evaluate the law of load and deformation of underground soilSolve the shortcomings of static parametersMaterial strength using tensile/compressive forcesQuality controlNot evaluated
The invention discloses a deep soil mass load deformation test standard penetrometer successively including from top to bottom a guide rod, a hammer cushion, a sounding rod and a hydraulic penetrationsystem, a displacement sensor is arranged in the hydraulic penetration system, the guide rod is sheathed with a pilereing hammer, the telescopic end of the hydraulic penetration system is connected with a standard penetrometer body, and the invention also discloses an operation method of the deep soil mass load deformation test standard penetrometer. The deep soil mass load deformation test standard penetrometer and the operation method thereof solve the shortcomings that domestic standard penetration test systems cannot evaluate underground soil mass load deformation rules and static parameters, has the advantages of simple structure, good quality control, convenient operation, fast detection speed, high measurement efficiency, detection result accuracy and reliability, and good repeatability, and provides a powerful testing tool for civil engineering exploration and practice.
Owner:SOUTHEAST UNIV

Method for evaluating reheat crack sensitivity of coarse grained region of welding heat affected zone

The invention relates to a method for evaluating reheat crack sensitivity of a coarse grained region of a welding heat affected zone. The method comprises the steps that firstly, different kinds of welding heat input are adopted for manufacturing a welding test plate; secondly, during C ring sampling, the arcing position and the tail end of the test plate need to be cut by at least 50 mm, and thesampling method has two schemes; thirdly, a bolt is used for applying stress to a C ring; fourthly, the test sample is put into a heating furnace to be subjected to simulated heat treatment; fifthly,whether reheat cracks are generated on the root of the gap of the C ring or not is observed; sixthly, critical stress under the different kinds of welding heat input is determined; and seventhly, in combination with the Gleeble hot simulation test, the index is evaluated, and the evaluation criteria of the gap C ring is set. The test operation is simple, the method can be applied and popularized in the actual engineering, and the condition that an existing evaluating method cannot evaluate the reheat crack sensitivity of the coarse grained region of the welding heat affected zone can be overcome.
Owner:EAST CHINA UNIV OF SCI & TECH

Problem determination rules processing

A context-sensitive pre-evaluation analysis of a set of rules is performed based on the circumstance or the current state of a rule clause directed to an infrequently changing condition. A group of multiple-clause rules are identified which each have a clause defining an infrequently changing condition for evaluating a state of a resource. The current state of the resource is monitored. If the identified group of multiple-clause rules, which cannot evaluate as TRUE under the context of the current state the resource, the identified group of multiple-clause rules are excluded from consideration by the rules engine. The rules engine will then encounter fewer rules to evaluate for a solution. The identified group of multiple-clause rules is further analyzed in the context of the infrequently changing condition for the current resource state. State metrics that are defined by clauses of the identified multiple-clause rules, those that cannot evaluate as TRUE, are identified. Those metrics are then also excluded from consideration by the rules engine. Thus, the rules engine will encounter fewer rules and / or event states that cannot be evaluated to a solution. The context-sensitive pre-evaluation analysis of the rules is performed out-of-band as the rules engine traverses the rule.
Owner:INT BUSINESS MASCH CORP

Triggering window conditions by streaming features of an operator graph

In a stream computing application, data may be transmitted between operators using tuples. However, the receiving operator may not evaluate these tuples as they arrive but instead wait to evaluate a group of tuples—i.e., a window. A window is typically triggered when a buffer associated with the receiving operator reaches a maximum window size or when a predetermined time period has expired. Additionally, a window may be triggered by a monitoring a tuple rate—i.e., the rate at which the operator receives the tuples. If the tuple rate exceeds or falls below a threshold, a window may be triggered. Further, the number of exceptions, or the rate at which an operator throws exceptions, may be monitored. If either of these parameters satisfies a threshold, a window may be triggered, thereby instructing an operator to evaluate the tuples contained within the window.
Owner:INT BUSINESS MASCH CORP

Method for estimating dust exposure concentration for operating personnel of thermal power enterprise

The invention discloses a method for estimating the dust exposure concentration for operating personnel of a thermal power enterprise. The method comprises the following steps: determining the number of days for continuous measurement according to the working time, a duty situation and a working schedule of a station; detecting the dust exposure concentration of each crew by a dust detector, and calculating a periodic dust exposure concentration average value of the station; comparing the periodic dust exposure concentration average value with an adjusted national standard to judge whether the dust exposure concentration for the operating personnel meets the stipulations of the national hygienic standard or not. According to the method, the problem that the conventional detection evaluation method cannot evaluate the dust exposure concentration for the type of operating personnel is solved, and the concentration level of dust exposure for a worker is really reflected to the maximum extent.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1

Calculation method for user availability in collaborative filtering recommendation system

The invention relates to a calculation method for user availability in a collaborative filtering recommendation system. The calculation method includes the following steps that a user-item rating matrix is established; the similarity among users is calculated through a Pearson similarity calculation method; availability coefficients of all the users for a target user are calculated, wherein the calculation method includes the following steps that when the similarity value between one certain user and the target user is smaller than 0 or items evaluated by the target user contain all the items evaluated by the user, the availability coefficient of the user for the target user is defined as 0, and when the similarity value between one certain user and the target user is not smaller than 0 or the items evaluated by the user contain items not evaluated by the target user, the availability coefficient of the user for the target user is defined as the ratio of the number of items, with grades larger than values in the rating interval, in common rating items of the two users to the number of the items rated by the target user; the availability of all the users for the target user is calculated; recommendation is carried out. The accuracy of recommendation can be improved.
Owner:TIANJIN UNIV

A method for obtaining the connectivity index of the Internet of Vehicles in the urban road scene

The prior art can only evaluate the network connectivity at the time by means of indexes such as the vehicle density and cannot evaluate the stability and the effective duration of a link, thereby lacking consideration for dynamic changes of vehicles and the network stability. The invention provides a method for acquiring an Internet of Vehicles connectivity index in an urban road scene, which provides the link survival duration to act as a new measuring index for the connectivity of the Internet of Vehicles from the aspects of static connection characteristics and dynamic connection characteristics of the Internet of Vehicles in the urban road scene, thereby providing help for measuring the overall connectivity and the stability of the Internet of Vehicles in urban roads and designing a routing protocol.
Owner:TONGJI UNIV
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