7374 results about "Filter system" patented technology

A novel system and method of predicting a user's rating of a new item in a collaborative filtering system is described. The invention incorporates social network information in addition to user ratings to make recommendations. The distance between users in the social network is used to enhance the estimate of user similarities for collaborative filtering. The social network can be constructed explicitly by users or deduced implicitly from observed interaction between users.

A spam filter system and method, for maintaining at least one database of permitted email addresses; automatically communicating with an email server, and selectively downloading and storing email not corresponding to entries in the database; automatically sending a challenge message in response to messages from non-permitted email addresses; if an appropriate response is received to the challenge message, adding the non-permitted email address to the database of permitted email addresses; and automatically restoring downloaded email messages from email addresses which become permitted.

A vehicle-to-vehicle communication filtering system is provided to selectively process broadcast messages between a host vehicle and a remote vehicle. A processing unit evaluates a time-to-collision status between the host vehicle and the remote vehicle sending the message. The time-to-collision status is a function of a relative distance and a relative velocity between the host vehicle and the remote vehicle which are determined from data provided within a first portion of the message received from the remote vehicle. An attentive factor is assigned to each of the remote vehicles based on the time-to-collision with respect to each remote vehicle. The attentive factor identifies a proportion of messages broadcast from the remote vehicle to be targeted for security processing. Security processing of the message is performed based on a second portion of the message unless the attentive factor indicates the message should be ignored.

PCT No. PCT / AU96 / 00144 Sec. 371 Date Jan. 12, 1998 Sec. 102(e) Date Jan. 12, 1998 PCT Filed Mar. 15, 1996 PCT Pub. No. WO96 / 28236 PCT Pub. Date Sep. 19, 1996A method and apparatus for determining the fouling effect of a feedstream on a filter having known characteristics disclosed. The method comprises passing the feedstream through a filter (5) having known characteristics; determining the change in resistance to flow of the feedstream across the filter, either continuously or over a number of time intervals and from this data, calculating a feed fouling index (FFI) representative of the fouling characteristics of the feedstream with respect to the filter. A method and apparatus for monitoring the operation of a filtration system is also disclosed the method comprising sampling system parameter values at selected locations within the filtration system at a predetermined sampling rate; generating a parameter profile characteristic from the sampled parameter values at predetermined intervals of time; and analysing the parameter profile characteristic to determine correct operation of the filtration system. A further method and apparatus of monitoring and controlling a filtering system based on backwash efficiency is also disclosed, the method comprising determining resistance values of filtering elements used in the filtering system at predetermined times during the backwash cycle of the system by monitoring a number of operating parameters of the system; calculating a backwash efficiency value representative of the efficiency of the backwash cycle of the filtering system using the resistance values determined; and controlling the operation of the filtering system in dependence on the value of the backwash efficiency calculated.

A filter, system and method is provided for filtering nanoparticles in a hot gas, namely particles <about 1 micron in a gas >about 200° C. and further particularly >about 450° C. including diesel exhaust. The filter includes filter media material composed of fibrous filter media having a plurality of fibers and granular filter media having a plurality of granules extending from the surfaces of the fibers. The filter is characterized by a permeability >about 3×10−12 m2 and an inertial resistance coefficient <about 1×106 m−1. The filter captures particles in the Most Penetrating Region (MPR). A filter system includes a nanoparticle filter in series with a diesel exhaust treatment element.

A system and method is disclosed for recommending items to individual users using a combination of clustering decision trees and frequency-based term mapping. The system and method of the present invention is configured to receive data based on user action, such as television remote control activity, or computer keyboard entry, and when a new item data is made available from sources such as television program guides, movie databases, deliverers of advertising data, on-line auction web sites, and electronic mail servers, the system and method analytically breaks down the new item data, compares it to ascertained attributes of item data that a user liked in the past, and produces numeric ranking of the new item data dynamically, and without subsequent user input, or data manipulation by item data deliverers, and is tailored to each individual user. A embodiment is disclosed for learning user interests based on user actions and then applying the learned knowledge to rank, recommend, and / or filter items, such as e-mail spam, based on the level of interest to a user. The embodiment may be used for automated personalized information learning, recommendation, and / or filtering systems in applications such as television programming, web-based auctions, targeted advertising, and electronic mail filtering. The embodiment may be structured to generate item descriptions, learn items of interest, learn terms that effectively describe the items, cluster similar items in a compact data structure, and then use the structure to rank new offerings. Embodiments of the present invention include, by way of non-limiting example: allowing the assignment of rank scores to candidate items so one can be recommended over another, building decision trees incrementally using unsupervised learning to cluster examples into categories automatically, consistency with “edge” (thick client) computing whereby certain data structures and most of the processing are localized to the set-top box or local PC, the ability to learn content attributes automatically on-the-fly, and the ability to store user preferences in opaque local data structures and are not easily traceable to individual users.

An intravascular emboli capture and retrieval system for intravascular embolism protection and embolism removal or maceration. Guidewire mounted proximally and distally located multiple opening filters are deployed within the vasculature and used to part, divide and macerate embolic debris and to capture such embolic debris within the confines thereof. A deployable flexible preformed memory shaped capture sleeve is alternatively used to collapse one or more filters and embolic debris therein for subsequent proximal withdrawal from the vasculature.

Systems and methods of the present invention allow filtering out spam and phishing email messages based on the links embedded into the email messages. In a preferred embodiment, an Email Filter extracts links from the email message and obtains desirability values for the links. The Email Filter may route the email message based on desirability values. Such routing includes delivering the email message to a Recipient, delivering the message to a Quarantine Mailbox, or deleting the message.

Aspects of the invention are found in an apparatus for monitoring data on a wireless network. The data is transmitted according to a wireless data network protocol across the network. The apparatus is contained on a portable wireless network analysis device. The portable wireless network analysis device has a wireless network interface that communicatively couples the portable wireless network analysis device to the wireless network. This allows the portable wireless network analysis device to receive data from the wireless network. The portable wireless network analysis device also has a network traffic analyzer. The network traffic analyzer is communicatively coupled to the wireless network interface. The analyzer receives and analyzes the data received from the wireless network. The portable wireless network analysis device is capable of being operated by user at one location and transported to second location. The portable wireless network analysis device is able to continue to monitor data on the wireless network while being transported from the first location to the second location. The apparatus may also have a user interface. Information about the data may be displayed on the user interface. In a specific instance, the user interface is a display screen. The apparatus can have a storage system. The storage system stores the data when initiated by a user. The apparatus can also have a filter system. The filter system filters the data based on a predefined criteria. The apparatus may have an alarm system. The alarm system indicates when a predefined network event has occurred.

A drain filtering system is disclosed, comprising a filter placed within a basket which is suspended from frame positioned underneath a drain grate atop the inlet to a storm drain. The filter is constructed from materials which filter out heavy metals and hydrocarbons from the water passing through. The filter also has overflow outlets to prevent back-up of storm water during periods of heavy rain. The basket is constructed from a corrosion resistant material, preferably high density polyethylene which can withstand the extreme pressures exerted by waste and water collected within the filter.

A method and system for filtering messages where the importance of a message is determined by analyzing the message body in conjunction with message attributes. Message body refers to the text in the body of the message, whereas message attributes convey information about the message. In another embodiment, analysis of the user's current computing environment provides additional input to the filtering system. This allows for preferentially weighting messages of user's current interests. Analysis includes computation of feature vectors and subsequent input to a discriminant function. The discriminant function provides a test statistic which is compared to a threshold. If the test statistic exceeds the threshold, the incoming message is passed by the filtering system and may be displayed to the user. In another embodiment, message body and attributes are used to anticipate significant events in a time series, such as streaming financial data.

The invention provides a constant-temperature, constant-humidity and constant-cleanliness silent indoor air system, belongs to the field of indoor intelligent adjustment, and relates to multiple techniques including indoor air pressure control, indoor air purification, an indoor central dedusting system, supercharging and compensation functions for interlayers of double windows and double doors, an outdoor haze isolating system, an indoor air internal-circulation cleaning method, air heat exchange, air heating, refrigeration, dehumidification and the like. According to the constant-temperature, constant-humidity and constant-cleanliness silent indoor air system, the pressure of fresh air is made positive through the interlayers of the double doors and the double windows, the air pressure in the interlayers of the double doors and the double windows is made higher than outdoor air pressure, and outdoor air is prevented from invading indoor air; a small primary-efficiency, medium-efficiency and high-efficiency filtering system is used for filtration, various types of automatic adjustment and control including heating, refrigerating, dehumidifying and the like are conducted on air, pollutant dust generated indoors is removed through the central dedusting system, and the constant-temperature, constant-humidity and constant-cleanliness silent indoor air system is an omnidirectional intelligent air control system.

Single filter and multi-filter endolumenal methods and systems for filtering fluids within the body. In some embodiments a blood filtering system captures and removes particulates dislodged or generated during a surgical procedure and circulating in a patient's vasculature. In some embodiments a filter system protects the cerebral vasculature during a cardiac valve repair or replacement procedure.

Systems and methods for the design or implementation of statistical filters for use in the spectral shaping of transmissions are disclosed. A desired power spectrum may be mapped to find pole locations that approximate the desired spectrum. These pole locations may then be mapped to the edge or inside of an equilateral polygon lying inside a unit circle, the equilateral polygon having the same number of sides as the order of the statistical filter desired and one vertex mapped to unity, to yield a set of eigenvalues. These eigenvalues may be the eigenvalues of a stochastic matrix the elements of which may be the Markov transition probabilities for use in a statistical filter designed to achieve the desired power spectrum. Use of a statistical filter employing these Markov transition values may be utilized to shape UWB or other signals to achieve the desired power spectrum.

Methods and apparatus implementing a technique for retrieving requested data. In general, in one aspect, the technique includes receiving a request from an application to read a portion of an application file and consulting a filter-system file. The filter-system file contains processed data that corresponds to data in the application file and correspondence information indicating how the set of processed data corresponds to the data in the application file. The technique also includes deriving the requested portion of the application file from the processed data using the correspondence information, and delivering the requested portion of the application file to the application. In another aspect, the technique includes receiving data to be retrieved in response to a request from an application with reference to the application's view of the application file, processing the received data to generate processed data that corresponds to the received data, producing correspondence information indicating how the processed data corresponds to the received data is produced, and storing the processed data and the correspondence information in a filter-system file.

A powered air purifying respirator system for use with at least one filter system includes: a housing including at least one inlet port and at least one outlet port; a motorized air flow system to draw air into the housing via the at least one inlet port; a control system in communicative connection with the motorized air flow system; and a filter system sensor in communicative connection with the control system. The filter system sensor provides information to the control system relating to the type of the at least one filter system upon fluid connection thereof with the housing. The control system can control the motorized air flow system at least in part on the basis of the type of filter system sensed by the filter system sensor. Another powered air purifying respirator system for use with at least one filter system includes: a housing including at least one inlet port and at least one outlet port; a motorized air flow system to draw air into the housing via the at least one inlet port; a control system in communicative connection with the motorized air flow system; and a pressure sensor in communicative connection with the control system to provide information to the control system relating to ambient pressure. The control system can, for example, control the motorized air flow system at least in part on the basis of the information relating to ambient pressure.

An air filter device and an operating method thereof. The air filter device comprises an air filter system and a powder distribution system. The air filter system comprises an air filter chamber (1), a clean air chamber (2), and a high-pressure jet pulse powder cleaning device (3). An entrance of the air filter chamber (1) is in communication with an air inlet pipe (4); an exit of the clean air chamber (2) is in communication with an air outlet pipe (6), and the air outlet pipe (6) is in communication with an exhaust fan (9). A plurality of bag filters or filter cartridges (10) are disposed in the air filter chamber (1). An opening end of each of the bag filters or filter cartridges (10) is in communication with the clean air chamber (2), and high-pressure jet pulse powder cleaning devices (3) are disposed above the opening end of the corresponding bag filters or filter cartridges (10). The powder distribution system includes a powder storage tank (13), which is in communication, via a powder delivery tube (15), with the air inlet pipe (4) of the air filter chamber (1). The operating method comprises a first powder distribution step and a second powder distribution step, which are respectively performed according to pressure detection status of the air filter chamber (1).

A relay provides message filtering services to an e-mail network. The relay monitors incoming communication and intercepts e-mail messages. The relay applies a policy to received messages to determine whether a message should be delayed. The relay applies a policy to delayed messages by reference to a delayed processing event which triggers the delayed processing. The relay updates policy data in accordance by employing an update module. The relay then restricts the delivery of messages having attributes close to those of harmful data as provided by a policy database.

A multi-arm spider fitting including a central hub from which such arms radiate. The arms are adapted at their extremities for coupling with filter modules, so that multiple filter modules can be secured to a single spider fitting, with the filter modules being arranged in a compact array to minimize the volumetric and spatial requirements of the filtration system. The multi-module filter assembly may be mounted on a motive cart, to provide for ready transport of the filter assembly between locations in a process plant.

The present application provides a filtration system for a gas turbine engine. The filtration system may include a holding frame with a positioning element extending therefrom and a filtration unit for mounting within the holding frame. The filtration unit may include a positioning slot therein such that the positioning element extends through the positioning slot when the filtration unit is mounted within the holding frame.

A signal processing system according to various aspects of the present invention includes an excursion signal generator, a scaling system and a filter system. The excursion signal generator identifies a peak portion of a signal that exceeds a threshold and generates a corresponding excursion signal. The scaling system applies a real scale factor to contiguous sets of excursion samples in order to optimize peak-reduction performance. The filter system filters the excursion signal to remove unwanted frequency components from the excursion signal. The filtered excursion signal may then be subtracted from a delayed version of the original signal to reduce the peak. The signal processing system may also control power consumption by adjusting the threshold. The signal processing system may additionally adjust the scale of the excursion signal and / or individual channel signals, such as to meet constraints on channel noise and output spectrum, or to optimize peak reduction. The magnitude threshold, excursion signal and / or individual channel signals may also be adaptively adjusted based on, for example, a channel signal quality such as a noise level specification.

A filter system, comprising an elongate filter body defining a lumen and having a proximal end and a distal end. A valve can be provided defining a lumen and having a reversibly sealable opening for unidirectional flow of a fluid through the lumen. The valve can be adjoined proximal the distal end of the elongate filter body, wherein the elongate filter body filters the unidirectional flow of the fluid passing through the lumen of the valve and the lumen of the elongate filter body.

The present invention discloses a decelerated centrifugal dust removing apparatus for a dust cleaner. It comprises a cylinder, a conical cylinder and a dust collector box connected in the given order from the upper part to the lower part, as well as an air outlet pipe and an air inlet pipe on the cylinder body. The conical cylinder has a small upper end and a large lower end. In the conical cylinder, on the lower part of the air outlet pipe (under the air outlet pipe) there is an umbrella-shaped reflector in the center of which is provided a hole for air returning. Between the periphery of the umbrella reflector and the side wall is provided an annular gap for the falling down of dust. The apparatus features small loss of air flow pressure, good effectiveness of air suction, high quality of dust filtering, and low noise. With the apparatus, the secondary pollution of the cleaned air can be effectively prevented, and it is especially suitable for use in a secondary stage filtering system of the dust cleaner and for separating small and fine dust particles.

Included in the invention are systems and methods of full time recording network traffic to a hierarchical data storage. Also included in the invention are systems and methods of retrieval of recorded network traffic from a hierarchically organized network data repository. Additionally included in the invention are systems and methods of efficiently filtering data in a hierarchically organized network data repository. Systems and method of displaying recorded network data utilizing the retrieval systems are also included in the invention. Further included in the invention are systems and methods of providing sliding time window selection user interfaces. Detailed information on various example embodiments of the inventions are provided in the Detailed Description below, and the inventions are defined by the appended claims.