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42results about How to "Reduce digging time" patented technology

Method of item-all-weighted positive or negative association model mining between text terms and mining system applied to method

The invention discloses a method of item-all-weighted positive or negative association model mining between text terms and a mining system applied to the method. The method comprises the following steps of preprocessing by using a Chinese text preprocessing module to establish a text database and a feature word item library; mining item-all-weighted feature word candidate item sets from the text database by utilizing a feature word frequent item set and negative item set mining implementation module, calculating a weight dimension ratio, and cutting out uninteresting item sets by adopting a multi-interestingness threshold value pruning strategy to obtain an interesting item-all-weighted feature work frequent item set and negative item set model; mining an effective item-all-weighted positive or negative association rule model from frequent item sets and negative item sets by utilizing an item-all-weighted positive or negative association rule mining implementation module between terms, and outputting the mined positive or negative association rule model to a user by utilizing an item-all-weighted association model result display module between terms. By applying the method and the system, unnecessary frequent item sets, negative item sets and association rule models can be greatly reduced, Chinese feature word association rule mining efficiency is improved and a high-quality association model between Chinese terms is obtained.
Owner:GUANGXI UNIVERSITY OF FINANCE AND ECONOMICS

Chinese interword weighing positive and negative mode excavation method and system based on relevant coefficients

The invention discloses a Chinese interword weighing positive and negative mode excavation method and a Chinese interword weighing positive and negative mode excavatiom system based on relevant coefficients. The method comprises the steps of preprocessing a Chinese text through a Chinese text information preprocessing module; generating a feature word candidate 1-item set through a Chinese feature word candidate item set generation module, generating a candidate i-item set according to a candidate (i-1)-item set from an i item set (i is greater than or equal to 2), calculating the supporting degree of the candidate i-item set, obtaining a frequency item set and a negative item set, and performing item set cutting according to the association of the item sets to obtain an interesting feature word frequent item set and a negative item set; calculating an association rule interesting degree and a confidence coefficient through a Chinese feature word positive and negative association rule generation and result display module, and displaying an interesting feature word positive and negative association rule mode excavated from the frequent item set and the negative item set to a user. According to the method and the system, appearance of ineffective and uninteresting Chinese feature word association modes can be avoided, and the excavation efficiency is greatly improved; the association rule mode is applied to the field of Chinese text information retrieval, so that inquiry expansion is realized; the information retrieval and inquiry performance is improved.
Owner:GUANGXI UNIVERSITY OF FINANCE AND ECONOMICS

Automatic vulnerability detection plugin generation method and system for industrial control system

The invention discloses an automatic vulnerability detection plugin generation method and system for an industrial control system. A current industrial control system vulnerability mining technology Fuzzing can find vulnerability but can not perform further processing on a vulnerability plugin. The method disclosed by the invention comprises a Fuzzing test link, a vulnerability playback link and avulnerability collecting link, the Fuzzing test link comprises the following sequential steps: constructing data sources and performing data storage; acquiring the data sources, starting to perform Fuzzing scanning, and mining vulnerability; monitoring a mining process; if all the data sources are completely polled and no problem is triggered, finishing the mining process; if a problem is triggered, acquiring node IDs of the data sources, and entering the vulnerability playback link; and the vulnerability playback link comprises the following sequential steps: generating the data sources andacquiring node information; acquiring the data sources, and starting to perform the Fuzzing scanning; and if no problem exists after verification, finishing, and if a problem exists, entering the vulnerability collecting link. The method disclosed by the invention can automatically generate a vulnerability detection plugin, converts unknown vulnerability into known vulnerability and improves vulnerability mining efficiency.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1

Completely-weighted mode mining method for discovering association rules among texts

The invention discloses a completely-weighted mode mining method for discovering association rules among texts. Completely-weighted data to be processed are pre-processed, and a completely-weighted database and an item .library are established; a completely-weighted frequent item set and a negative item set are mined, and an interesting completely-weighted frequent item set and an interesting negative item set are obtained through pruning; the effective completely-weighted positive and negative association rules are mined through a support degree-CPIR model-correlation-interestingness evaluation framework. The completely-weighted mode mining method can overcome the defects of the existing weighing mining technology. Item weights are objectively distributed in the database and integrated with the completely-weighted mode mining method along with the completely-weighted data characteristics of the business record change, and a more actual and reasonable completely-weighted positive and negative association mode can be obtained. An invalid and uninteresting association mode is avoided. The number of mined candidate items, the number of frequent item sets, the number of negative item sets and the number of positive and negative association rule modes are smaller than the number of mined candidate items, the number of frequent item sets, the number of negative item sets and the number of positive and negative association rule modes in the prior art. The mining efficiency is greatly improved, and the completely-weighted mode mining method has good extendibility.
Owner:GUANGXI UNIVERSITY OF FINANCE AND ECONOMICS

Teaching affair data matrix weighted positive and negative pattern mining method and system based on correlation

InactiveCN104239533AReduce diggingImprove the efficiency of mining the positive and negative association rules of subjectsData processing applicationsVisual data miningData MatrixData pre-processing
The invention provides a teaching affair data matrix weighted positive and negative pattern mining method and system based on correlation. The teaching affair data matrix weighted positive and negative pattern mining method comprises the following steps of pre-treating teaching affair data by using a teaching affair data pre-treating module; generating a subject candidate item set by using a subject candidate item set generation module; obtaining a subject negative item set by using a subject frequent item set and a negative item set generation module according to an item set supporting expect and calculating a candidate item set support degree; comparing with a minimum support degree threshold value to obtain a matrix weighted subject frequent item set and a negative item set; generating whole proper subsets of the subject frequent item set and the negative item set by utilizing a subject positive and negative correlation rule generation module, and calculating the comparison and the confidence coefficient of the item sets; comparing with a minimum confidence coefficient threshold value to obtain a matrix subject positive and negative correlation rule pattern; and displaying the subject positive and negative correlation rule pattern to a user by using a subject positive and negative correlation pattern display module. The teaching affair data matrix weighted positive and negative pattern mining method and system can be applied to a teaching affair information management system and can be used for mining the subject correlation rule pattern which is closer to a real pattern; the pattern can provide scientific evidences to educational transformation, teaching affair administration and education decision making.
Owner:GUANGXI COLLEGE OF EDUCATION

Method and system for mining fully weighted positive and negative association patterns between words in text

The invention discloses a method of item-all-weighted positive or negative association model mining between text terms and a mining system applied to the method. The method comprises the following steps of preprocessing by using a Chinese text preprocessing module to establish a text database and a feature word item library; mining item-all-weighted feature word candidate item sets from the text database by utilizing a feature word frequent item set and negative item set mining implementation module, calculating a weight dimension ratio, and cutting out uninteresting item sets by adopting a multi-interestingness threshold value pruning strategy to obtain an interesting item-all-weighted feature work frequent item set and negative item set model; mining an effective item-all-weighted positive or negative association rule model from frequent item sets and negative item sets by utilizing an item-all-weighted positive or negative association rule mining implementation module between terms, and outputting the mined positive or negative association rule model to a user by utilizing an item-all-weighted association model result display module between terms. By applying the method and the system, unnecessary frequent item sets, negative item sets and association rule models can be greatly reduced, Chinese feature word association rule mining efficiency is improved and a high-quality association model between Chinese terms is obtained.
Owner:GUANGXI UNIVERSITY OF FINANCE AND ECONOMICS

Method for setting double-triple soil taking openings by reverse construction method

InactiveCN102733394AImprove unearthed efficiencyUnearthed efficiency shortenedExcavationsWork periodFloor slab
The invention discloses a method for setting double-triple soil taking openings by a reverse construction method. Under the condition without influencing the first-layer vehicle running and the stability of a structure support system in the construction stage of the reverse construction method, the support and force transfer requirements of the reverse construction stage can be met by adopting a framework beam or the combination of the framework beam and a local triangular plate support form bottom to top in the region through the structure checking, on the premise, structures such as secondary beams, floor slabs and the like between two adjacent strides or three adjacent strides adopt post construction, and vacant regions of adjacent two-cabin or three-cabin floor slabs are set as soil taking openings. Through the arrangement of the double-triple soil taking openings, the contradiction between soil taking opening soil accumulation and the soil taking and the problem of vertical earthwork transporting passage are solved, the soil taking and the soil accumulation can be carried out in different hole positions, then, the position exchange regulation is carried out, the three-dimensional crossed construction is avoided, the soil outlet efficiency is improved, the soil digging time is shortened, the work period is saved, and the construction progress is ensured.
Owner:SHANGHAI CONSTRUCTION GROUP +1

Agricultural rapid sowing device

The invention discloses an agricultural rapid sowing device. The agricultural rapid sowing device comprises two walking wheels, a bracket, an earth digging mechanism, a transmission mechanism and a seed falling mechanism, wherein the earth digging mechanism comprises a second rotary shaft, two first supporting plates and an earth digging shovel; the transmission mechanism comprises two second supporting plates, a conveyor belt, two third rotary shafts and two fourth gear discs; the seed falling mechanism comprises a seed storage box, a seed guide box, a first cover body, a second cover body, afixed pulley and a rope body. The agricultural rapid sowing device disclosed by the invention can synchronously realize forward movement, planting groove digging, uniform sowing of seeds and earth covering of the sowing device; the mode of the earth digging work of the earth digging shovel is an intermittent mode; planting grooves are dug in a planting land at intervals, the earth digging workingtime of the earth digging shovel is greatly reduced, the labor intensity of the earth digging shovel is reduced and the service life of the earth digging shovel is prolonged; the agricultural rapid sowing device is simple in structure, strong in operability and low in construction price, and can be vigorously popularized in the market.
Owner:唐晓辉

Thermoelectric refrigeration artificial formation freezer

The invention relates to a thermoelectric refrigeration artificial formation freezer. The thermoelectric refrigeration artificial formation freezer includes a protecting device, a radiator and a solid-state refrigeration device, wherein the protecting device is arranged outside, the radiator is arranged inside, the solid-state refrigeration device is arranged between the protecting device and theradiator and is a semiconductor refrigeration plate, the semiconductor refrigeration plate is provided with a heat absorption end and a heat releasing end, the heat absorption end attaches to the protecting device, the heat releasing end attaches to the radiator, after electrification, the heat absorption end absorbs formation heat, and the heat releasing end takes away the formation heat throughthe radiator; and the semiconductor refrigeration plate controls a circuit, the magnitude of a current, and direction of the solid-state refrigeration device through a control unit. According to the freezer, electrification is refrigeration, a formation can be directly frozen without constructing a freezing station, the project cost and construction period are greatly reduced, the cost is lowered,and the work efficiency is improved; according to the needs of a project, segmenting freezing, directional freezing and forced unfreezing are realized, the refrigeration cost is saved, and the construction period is shortened; and natural water circulation cooling is adopted, and the risk of leakage to pollute the environment is avoided.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Foundation pit excavation method

The invention belongs to the technical field of underground engineering construction, and particularly relates to a foundation pit excavation method. According to the foundation pit excavation method,an open trench is excavated along a construction route by providing an excavator and a heading machine, then the heading machine is placed in the open trench, and a pretreated foundation pit is excavated by the heading machine. In the way, on the one hand, the excavator and the heading machine are excavated simultaneously, the excavation time can be saved, and the excavation efficiency is improved; on the other hand, when the excavator, a bulldozer and other equipment are used for excavating the foundation pit, the bulldozer needs to be reserved for the area where the bulldozer moves forwardand turns in the open ditch as well as muck treatment, thus a large excavation cross section is required, however, the heading machine is placed in the open ditch to excavate the pretreated foundationpit, only the area where the heading machine is lowered and taken out needs to be reserved, and thus the larger excavation cross section is not required to be produced during excavation; and the foundation pit for construction can be formed by collecting and transporting mucks produced during driving of the heading machine and treating the pretreated foundation pit.
Owner:CHINA CONSTR SCI & TECH CO LTD
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