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295 results about "Product analysis" patented technology

Document-level sentiment analysis method based on specific domain sentiment words

ActiveCN108804417AMake up for the lack of domain specific wordsVersatilitySemantic analysisCharacter and pattern recognitionData setAlgorithm
The invention provides a document-level sentiment analysis method based on specific domain sentiment words. The method is implemented by the following steps of collecting a document data set, traininga set of prototype words by using a Skip-gram word vector model to obtain a word vector corresponding to each prototype word, recombining the word vectors by utilizing an attention mechanism, and capturing a relation between non-continuous words in the word vectors; synthesizing the words and sentences by using an asymmetric convolutional neural network and a bidirectional gate recurrent neural network based on the attention mechanism respectively, thereby forming document vector characteristics; generating sentiment eigenvectors by utilizing a domain sentiment dictionary of the Skip-gram word vector model; and finally, combining the document vector characteristics and the sentiment eigenvectors by utilizing a linear combination layer to form document characteristics beneficial to document classification. The sentiment analysis is widely applied to the product analysis, the commodity recommendation, the stock price trend prediction and the like; and the method provided by the invention can accurately and efficiently carry out sentiment analysis on documents, and has great commercial values.
Owner:SHANDONG UNIV OF SCI & TECH

Partial discharge charged detection comprehensive diagnosis method of GIS (Gas Insulated Switchgear) for electric power

The invention relates to a partial discharge charged detection comprehensive diagnosis method of GIS (Gas Insulated Switchgear) for electric power, which comprises the following steps of: quickly surveying whether the insulation performance of the running GIS is normal or not by adopting a transient voltage-to-ground test method and in combination with a high-frequency CT (Computed Tomography) matched with a high-speed oscilloscope background noise test method; accurately measuring the abnormal GIS through a ultra-high frequency sensor matched with a high-speed oscilloscope or a portable frequency spectrometer to confirm whether a partial discharge signal of the running equipment exists; diagnosing the discharge part and the discharge defect type of the running equipment by applying an ultrasound partial discharge and ultra-high frequency partial discharge test method; and further confirming the discharge defect of the running equipment by adopting a SF6 decomposition product analysis method for a suspected defect gas chamber and adopting an X-ray perspective irradiation method for a suspected defect part. The partial discharge charged detection comprehensive diagnosis method of the GIS has the advantages of various means, highly-efficient test, definite diagnosis and the like.
Owner:YUN NAN ELECTRIC TEST & RES INST GRP CO LTD ELECTRIC INST

Instrument for analyzing quality of sulfur hexafluoride gas in electric equipment

The invention relates to an instrument for analyzing the quality of sulfur hexafluoride gas in electric equipment. The instrument comprises an analysis mechanism of a purification device, wherein the analysis mechanism is composed of a sample inlet, a temperature detection branch, a decomposed product detection branch and a purity detection branch; and the outlet end of the sample inlet is respectively communicated with the temperature detection branch, the decomposed product detection branch and the purity detection branch via a first four-way pipe. In the invention, a test is only conductedonce so that the detection of important items in three related standards namely brackish water detection, decomposed product analysis and purity analysis of SF6 equipment can be satisfied; and the gas using amount of the test is saved by reducing the detection test times of equipment, thereby being energy-saving, environmentally-friendly and effectively protecting the detection equipment. Meanwhile, the instrument can be used as a portable instrument for on-site electrified detection of working flows to avoid the influence caused by outage overhaul and the instrument can also be used as a labinstrument for off-line test analysis.
Owner:ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER +1

Early stage rapid molecular detection method for rape sclerotinia rot

The invention belongs to the plant diseases molecular detection field and relates to the early rapid molecular detection method of sclerotinia rot of colza. The invention is characterized by comprising the collection of weazen rapeseed petals, extraction of total DNA of rapeseed petals, nest-PCR, PCR amplification product analysis, agarose gel electrophoresis and result judgement. If sclerotinia sclerotiorum exists in a sample, a 292bp purpose bank may appear in the agarose gel under ultraviolet light, or else, the sclerotinia sclerotiorum does not exist. The primers of the invention can not only distinguish common plant leaf pathogenic fungi of distance relationship and different categories, such as alternaria genus alternaria sp, fusarium genus fusarium graminearum and coniothyrium genus sclerotinia sclerotiorum sclerotia coniothyrium parasitic fungi, but also can distinguish various fungi of common plant leaf fungal pathogen botrytis also belonging to ascomycotina, discomycete and helotiales with the sclerotinia species; the invention has high sensitivity, can detect the sclerotinia sclerotiorum DNA with the limit of 1fg/Mul, is rapid, and can obtain accurate detection result within 7 hours, however, at least two days or more than 1 week is needed for obtaining the detection result by using the traditional microbiology method.
Owner:HUAZHONG AGRI UNIV

Mechanism modeling method and device

The invention discloses a mechanism modeling method and a mechanism modeling device. The method comprises the following steps of: finishing assembly simulation of a product model under a virtual assembly environment to form a product part linked list; acquiring constraint information during an assembly process and establishing a moving pair object to form a moving pair linked list; identifying a mechanical object and acquiring part information of the mechanism from the product part linked list to form a mechanical member linked list, and acquiring moving pair information of the mechanism from the moving pair linked list to form a mechanism moving pair linked list; loading corresponding data information in the mechanism object and establishing a mechanical information model under the virtual assembly environment; and calling a mathematical expression model of a corresponding moving pair by the mechanism object according to the moving pair information in the moving pair linked list to establish a mechanism generalized mathematical expression model. A modeling process of the mechanism is realized by a mixed expression method of information model and mathematical model under the virtual assembly environment, so that the method and the device can serve assembly product analysis and mechanism performance analysis better.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Gas station oil product analysis method and system

The invention relates to the technical field of oil product analysis, in particular to a gas station oil product analysis method and a gas station oil product analysis system. The gas station oil product analysis method comprises the steps S1, obtaining mileage information, in-vehicle electric appliance information and geographic information of a vehicle, and detecting the oil quantity change condition of the vehicle in real time; S2, if the proportion of the new oil is greater than a preset proportion, obtaining the nearest gas station information, and starting an oil product analysis period;S21, calculating the oil consumption per hundred kilometers; S22, recording current driving habit data, and analyzing a driving style; S23, judging the influence of the driving style on the fuel consumption, and analyzing the current fuel quality under the same driving style. The gas station oil product analysis system comprises an acquisition module, a processing module, a positioning module, abackground cloud and a communication module. According to the method, driving style analysis and fuel consumption after refueling are combined. The quantitative scoring is carried out on the fuel. Theobjective fuel reference is provided for a vehicle owner, and adverse effects of bad fuel on economic expenditure of the vehicle owner and the vehicle are avoided.
Owner:广东好帮手安与科技有限公司
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