98results about How to "Reliable classification" patented technology

A system and method are provided for psychographically profiling a target population of individuals, programmably implemented in a server apparatus. The psychographic segmentation portion includes a questionnaire processing part, a segment solution part, and a typing tool part. The questionnaire processing part acquires a plurality of responses to a predetermined set of questionnaire questions by an initial pool of target population members. The questionnaire processing part uses a combination of weighted statistical methodologies to arrive at a rule-based decision on whether the question would serve as a good wedge variable. Optionally, the rule based decision is then compared to an expert's opinion and the weights and threshold parameters of the weighted statistical combination are adjusted accordingly to more accurately match the expert's decision. The identified wedge variables are used for effectively segregating the target population into groups of homogenous individuals. The typing tool part selectively generates an abbreviated set of questions from the predetermined set of questionnaire questions for profiling an individual respondent to at least one of the segments.

A character reading technique recognizes character strings in grayscale images where characters within such strings have poor contrast, are variable in position or rotation with respect to other characters in the string, or where portions of characters in the string are partially obscured. The method improves classification accuracy by improving the robustness of the underlying correlation operation. Characters are divided into regions before performing correlations. Based upon the relative individual region results, region results are combined into a whole character result. Using the characters that are read, a running checksum is computed and, based upon the checksum result, characters are replaced to produce a valid result.

A digital image is automatically combined with text data by automatically classifying the image according to a predetermined set of categories, and automatically selecting text data from a repository, wherein the selected text data match the category of the image according to a predetermined criterion.

The invention provides a multi-label classification method of electronic medical record based on symptom extraction and feature representation. Considering the influence of disease and symptom and thecorrelation between symptoms on the multi-classification problem of disease label of electronic medical record, two different symptom representation methods are adopted: using TF-IDF builds symptom vectors and learns symptom vectors using word2vec. The two symptom vector sequences extracted from the electronic medical record are respectively used as input sequences of the two two-way LSTM models,and the two-way LSTM models are trained. For the electronic medical records of unknown disease tags, two symptom vectors corresponding to the symptoms are extracted to form two symptom vector sequences, and two trained bi-directional LSTM models are input respectively to obtain two probability vectors. The weighted combination of the two probability vectors is used to obtain the final classification vector. This method has good classification effect and applicability.

The invention is an a document classification and marking engine/method that functions in a real-time compatible mode with off-the-shelf word processors, e-mail programs and presentation or other document development software applications. The software engine is used for the security classification of sensitive or national security classified information in electronic format and is enhanced by methods and processes that ensure that the software classification engine considers all document informational elements regardless of attributes assigned to the text that may hide text from the user. The software engine provides a complete and reliable document classification determination interface method based on user selections and uniquely codes the full text classification determination in a persistent manner within the electronic shell of the document in real-time and dynamically displays the text based full classification determination in the banner of the host document development application. The unique codes of the full classification embedded in the electronic shell of the document enable effective and reliable software processes and methods that establish controls for access, movement, storage etc. for electronic documents, as well as virtual electronic security perimeters, on a computer, networks of computers and/or among computer networks and domains of networks. The full or complete and persistent classification codes embedded in the document shell also enables reliable software processes and methods that immediately warn or alert security personnel of a beach of a physical security perimeter between or among computers networks or domains of networks established to protect the information contained in electronic document format.

The invention relates to a power system transient state voltage stability evaluating method based on misclassification cost classified learning, which belongs to the power system stability analyzing and evaluating field. Based on dynamic measurement datum of a synchronous phasor measuring unit, a key subsequence closely related to the power system state is extracted from a time sequence constituted of a large amount of dynamic measurement datum; by setting different misclassification costs of stable power system and unstable state, a weight coefficient is introduced into a learning sample; a decision-making tree algorithm infused with the sample weight coefficient is used to perform classified learning so as to acquire a decision-making tree model; and the decision-making tree is used for online monitoring to implement evaluation to the power system transient state voltage stable situation.

The invention relates to a system (100) arranged to delineate the acute intracerebral haematoma in non-contrasted CT images in two stages. The first stage, performed by the extraction unit (110), employs an analysis of gray values of the image data in order to extract the candidate region. The candidate region may comprise both an acute haematoma and other regions having similar gray values, e.g., regions resulting from partial volume effects at the interface of the bony structures of the skull and the brain. The novel second stage, performed by the classification unit (120), analyzes spatial features of the candidate region such as, for example, the size, shape, and connectedness to the skull bone of the candidate region. Using spatial features of the candidate region improves the correctness of classification of the candidate region as a true or false acute haematoma.

A method for operating e.g. a robot. The method includes the steps: acquiring a sequence of images of a space surrounding the robot within which a potential object is situated; ascertaining, using a first machine learning system, a respective first variable characterizing the potential object as a function of each of the images; ascertaining, using a second machine learning system, at least one second variable that characterizes the potential object as a function of a plurality of the first variables characterizing the potential object; controlling the robot as a function of the second variable characterizing the potential object. A computer program, a device for carrying out the method, and a machine-readable storage element on which the computer program is stored, are also described.

The present invention relates to a device, system and method for pulsatility detection. The proposed device comprises an input interface (30) for obtaining image data of a scene, said image data comprising a time sequence of image frames, an extraction unit (31) for extracting a time-varying signal indicative of a periodic physiological phenomenon from a region of interest of said image data, a transformation unit (32) for transforming said time-varying signal into a spectral signal, a partitioning unit (33) for partitioning the spectral signal into at least an in-band sub-signal covering a first frequency range of said spectral signal and an out-band sub-signal covering a second frequency range of said spectral signal, wherein said first frequency range comprises at least a frequency range of the periodic physiological phenomenon, an analysis unit (34) for separately deriving an in-band measure from the in-band sub-signal and an out-band measure from the out-band sub-signal, the in-band measure and the out-band measure representing a descriptor, and a classifier (35) for classifying said region of interest as a pulsatile region of a living being or as a non-pulsatile region based on the descriptor.

The invention provides a visual classifier construction method with the consideration of characteristic reliability. The method includes the steps that video characteristics of each video sample in a video sample set are extracted to obtain a video characteristic set; a label is endowed to each video sample to indicate that the video sample belongs to a first category or a second category; reliability assessment is carried out on each video sample to obtain a reliable factor of each video sample; based on the video characteristic set, the label of each video sample and the reliable factor of each video sample, a weighted support vector machine algorithm is utilized to obtain a visual classifier. The visual classifier construction method can be applied to services of internet harmful video filtration, video supervision and the like to maintain safety of contents of the internet.

The invention discloses a fruit sugar degree nondestructive detection device and method based on a silicon-based multispectral chip, and relates to the technical field of apple sugar degree nondestructive testing. A fruit bracket is arranged above the detection device; a fruit sample to be detected can be placed; a light source, a multispectral camera adopting a silicon-based multispectral chip and a detection module are arranged in the detection device; the multispectral camera is connected with the detection module and forms an included angle with the light source, the multispectral camera collects scattered multispectral image data of the fruit sample to be detected and inputs the scattered multispectral image data into the detection module, and the detection module detects the sugar degree of the fruit sample to be detected according to the received multispectral image data. The adopted silicon-based multispectral chip is made of silicon-based wafers and has the advantages of smallsize, light weight, simple structure, low cost and the like, and the sugar degree detection device is more convenient to operate and higher in detection speed. According to the fruit sugar degree detection method, the sugar degree of the fruit can be graded relatively reliably without a complex mathematical model and long-time operation.

There is provided an implantable cardiac pacing system or other cardiac monitoring system having an enhanced capability to classify intracardiac signals through a combination of DSP techniques and software algorithms. The implantable device has one or more DSP channels corresponding to different signals which are being monitored. Each DSP channel most preferably amplifies the incoming signal, converts the signal from analog to digital form, digitally filters the converted signals to provide a filtered signal, operates on the filtered signal to provide a slope signal, determines from the filtered and slope signals when an intracardiac event has been detected, signal processes the filtered and slope signals for a predetermined analysis interval after threshold crossing, and generates a plurality of wave parameters corresponding to the signal. The generated wave parameters are further operated on by a programmable algorithm to classify the detected event based upon DSP-generated parameters, and then monitor or detect the onset, development or presence of an undesired heart condition in a patient. The system may further provide for the delivery of treatment, storage of intracardiac data, or provision of a warning to a patient or physician in response to the detection of such a heart condition.