Patent application number | Description | Published |
20110144277 | USE OF SILICON-CONTAINING PRECURSOR COMPOUNDS OF AN ORGANIC ACID AS A CATALYST FOR CROSS-LINKING FILLED AND UNFILLED POLYMER COMPOUNDS - The invention relates to the use of a silicon-containing precursor compound of an organic acid, particularly an olefinic silicon-containing precursor compound of an organic acid and/or of a tetracarboxyl silane, for the production of unfilled and/or filled polymer compounds, polymers, or filled plastics, such as granules or finished products, made from thermoplastic base polymers and/or monomers and/or prepolymers of the thermoplastic base polymers. A finished product is an item, such as a molded body, particularly a cable, hose, or pipe. The invention further relates to a master batch comprising the silicon-containing precursor compound. | 06-16-2011 |
20110144278 | SILANOL CONDENSATION CATALYSTS FOR THE CROSS-LINKING OF FILLED AND UNFILLED POLYMER COMPOUNDS - The invention relates to a composition of an organofunctional silane compound, particularly of a mono-unsaturated silane compound, and of an organic acid or a precursor compound which releases said organic acid, and to a method for the production of polymer compounds such as granulates and/or finished products from thermoplastic base polymers and/or monomers and/or prepolymers of the thermoplastic base polymer utilizing the composition, the organic acid, or the precursor compound which releases said organic acid. The invention also relates to the produced polymers, filled plastics such as, for example, granulates, finished products, molded bodies and/or articles such as pipes or cables. In addition, the invention relates to a kit containing the composition. | 06-16-2011 |
20120065302 | METHOD FOR USING SILANES AND SILANE BLENDS IN WOOD-PLASTIC COMPOSITE MANUFACTURING - A composite of a lignocellulosic material and a plastic is obtained by grafting an organosilane to the plastic, to obtain a grafted plastic; and compounding the grafted plastic with the lignocellulosic material, to obtain the composite. | 03-15-2012 |
20120080637 | COMPOSITE MATERIAL COMPRISING POLYETHYLENE AND MAGNETIC PARTICLES - Composite material which is in pellet form and which comprises particles with a core-shell structure, where the core of the particles comprises one or more magnetic materials, and the shell comprises silicon dioxide, and which comprises a polyethylene crosslinkable in the presence of a heat-activatable free-radical initiator and/or polyethylene-containing copolymers. Process for the crosslinking of polyethylenes, by mixing the composite material, one or more heat-activatable free-radical initiator(s) and at least one polyethylene, and heating the mixture inductively. | 04-05-2012 |
20130037744 | CARBOXYL-FUNCTIONALIZED SILICON-CONTAINING PRECURSOR COMPOUND OF VARIOUS ORGANIC CARBOXYLIC ACIDS - The invention relates to a composition of a carboxyl-functionalized silicon-containing precursor compound of at least two different organic acids, said composition having two, three, or four carboxyl groups functionalized with various hydrocarbon groups according to formula I and/or II. Said carboxyl groups can be released as carboxylic acids and can be used as silane hydrolysis catalysts and/or silane condensation catalysts. The invention further relates to methods for producing the composition, to the use of the composition for cross-linking polymers, and to a formulation of the composition in the form of a masterbatch. | 02-14-2013 |
20130253144 | SILANOL CONDENSATION CATALYSTS FOR THE CROSS-LINKING OF FILLED AND UNFILLED POLYMER COMPOUNDS - The invention relates to a composition of an organofunctional silane compound, particularly of a mono-unsaturated silane compound, and of an organic acid or a precursor compound which releases said organic acid, and to a method for the production of polymer compounds such as granulates and/or finished products from thermoplastic base polymers and/or monomers and/or prepolymers of the thermoplastic base polymer utilizing the composition, the organic acid, or the precursor compound which releases said organic acid. The invention also relates to the produced polymers, filled plastics such as, for example, granulates, finished products, molded bodies and/or articles such as pipes or cables. In addition, the invention relates to a kit containing the composition. | 09-26-2013 |
20140309447 | COMPOSITION OF OLEFINICALLY FUNCTIONALISED SILOXANE OLIGOMERS BASED ON ALKOXY SILANES - The invention relates to a composition containing olefinically functionalized siloxane oligomers which are derived from olefinically functionalized alkoxy silanes and optionally alkoxy silanes functionalized with saturated hydrocarbons and optionally a tetra alkoxysilane, at most comprising an olefinic group on the silicon atom and which has a reduced chloride content and a weight average molecular mass (Mw) of more than 315 g/mol. | 10-16-2014 |
Patent application number | Description | Published |
20100148581 | POWER SYSTEM AND METHOD FOR DRIVING AN ELECTROMOTIVE TRACTION SYSTEM AND AUXILIARY EQUIPMENT THROUGH A COMMON POWER BUS - Power system and method for providing electrical power are provided. The system includes a traction system and auxiliary equipment coupled to a power bus. The traction system includes one or more electromotive machines having a first type of stator winding that provides protection relative to voltage spikes expected at the traction stator under a first voltage level appropriate for the traction system. The auxiliary equipment includes one or more electromotive machines having a second type of stator winding that provides protection relative to spikes expected at the auxiliary stator under a second voltage level lower than the first voltage level. Inverter circuitry is coupled to drive the auxiliary equipment, and signal-conditioning circuitry is provided to attenuate voltage spikes produced by the inverter circuitry. The power bus is operated at the first voltage level, and the voltage spike attenuation is sufficient to protect the auxiliary stator. | 06-17-2010 |
20120218027 | System and Methods for Improving Power Handling of an Electronic Device - There is provided an electronic device that includes a heatsink and a set of IGBTs coupled to the heatsink and configured to deliver power to a field exciter and a battery. The electronic device also includes a temperature sensor disposed in the heatsink and a controller. The controller is configured to receive a temperature reading from the temperature sensor and, based on the temperature reading, determine a junction temperature for at least one of the IGBTs of the set of IGBTs. The controller is also configured to de-rate an output power provided by each of the IGBTs based, at least in part, on the junction temperature. | 08-30-2012 |
20120218669 | System and Method for Operating Inverters - There is provided a control system and method related to the use of insulated gate bipolar transistor (IGBT) devices in vehicles. An exemplary control method includes receiving a status signal that indicates a fault condition in the operation of an IGBT device of an affected converter. The exemplary method also includes sending a control signal that turns off all IGBTs of the affected converter. The exemplary method additionally includes receiving a second status signal for each of the IGBTs that indicates whether each of the IGBTs successfully turned off. The exemplary method further includes generating an indication that the fault condition relates to a saturation condition or a power supply being outside a designated range, depending on a duration of the fault signal. | 08-30-2012 |
20120218710 | System and Methods for Improving Power Handling of an Electronic Device - There is provided an electronic device that includes a heatsink, a first dual IGBT coupled to the heatsink and configured to provide electrical power to a field exciter, a second dual IGBT coupled to the heatsink and configured to provide electrical power to a battery, a third dual IGBT coupled to the heatsink and common to the field exciter and the battery. The electronic device also includes a temperature sensor disposed in the heatsink, a cooling unit comprising a plenum and a variable source of air flow, and a controller. The controller is configured to receive a temperature reading from the temperature sensor and, based on the temperature reading, determine a desired level of cooling for at least one of the dual IGBTs, wherein an air flow rate provided by the cooling unit is determined based on the desired level of cooling. | 08-30-2012 |
20120221287 | System and Methods for Improving Power Handling of an Electronic Device - There is provided an electronic device that includes a heatsink, a first dual IGBT coupled to the heatsink and configured to provide electrical power to a field exciter, a second dual IGBT coupled to the heatsink and configured to provide electrical power to a battery, and a third dual IGBT coupled to the heatsink and common to the field exciter and the battery charger. The exemplary electronic device also includes a single temperature sensor disposed in the heatsink, a controller configured to receive a temperature reading from the single temperature sensor and, based on the temperature reading, estimate a junction temperature of at least one of the first, second, or third dual IGBT. | 08-30-2012 |
20120221288 | System and Methods for Improving Power Handling of an Electronic Device - There is provided a method of determining thermal behavior of a double H-bridge. An exemplary method includes applying current to a set of dual IGBTs of the double H-bridge, the dual IGBTs thermally coupled to a heatsink. The method also includes measuring case temperatures of each of the dual IGBTs. The method also includes, based on the measured case temperatures, determining a set of thermal resistance parameters that describe a thermal effect that the current through each dual IGBT has on the case temperatures of each dual IGBT. The method also includes using the thermal resistance parameters to generate a computer model for analyzing heat flow in the double H-bridge. The method also includes using the thermal model to estimate junction temperatures of the double H-bridge during operation of the double H-bridge. | 08-30-2012 |
20120248864 | System and Method for Operating Inverters - There is provided a control system and method related to the use of insulated gate bipolar transistor (IGBT) devices in vehicles. An exemplary control method includes applying a voltage to a gate of an IGBT device to turn the IGBT on, measuring the collector-to-emitter voltage of the IGBT, and comparing the measured collector-to-emitter voltage to a voltage reference. The exemplary method also includes generating a fault condition if the measured collector-to-emitter voltage exceeds the voltage reference. The exemplary method additionally includes initiating a soft turn-off in response to the fault condition by reducing the voltage applied to the gate of the IGBT to a voltage slightly greater than a rated threshold voltage of the IGBT. The exemplary method further includes initiating a hard turn-off after a specified time period beyond the initiation of the soft turn-off, by reducing the voltage applied to the gate of the IGBT below the rated threshold voltage to a negative value, thus providing a negative voltage bias to the IGBT. | 10-04-2012 |
20140012446 | SYSTEM AND METHOD FOR OPERATING A HYBRID VEHICLE SYSTEM - System including a switch control module that is configured to control operation of a first contactor and a second contactor in a vehicle system. The first and second contactors are configured to selectively connect front-end and direct-current (DC) buses, respectively, to an energy storage system of the vehicle system. The front-end bus is configured to receive electrical power from an external power source and provide the electrical power to a converter device. The converter device is configured to supply DC power to the DC bus. The switch control module is configured to close the second contactor when the vehicle system is operably coupled to the external power source so that the energy storage system is charged by the DC power. The switch control module is configured to close one of the first contactor or the second contactor when the vehicle system is operably decoupled to the external power source. | 01-09-2014 |
Patent application number | Description | Published |
20120260165 | RECOMMENDING CONTENT - A method for recommending content items to a user is provided. It includes: (i) receiving one of at least an acceptance input and a rejection input from a user in relation to content presented to the user; (ii) in response to an acceptance input, rendering the presented content, or in response to a rejection input, selecting fresh content for presentation; and, (iii) repeating steps (i) and (ii) until a acceptance input is received. Content is selected in dependence on a associated probability associated with that content. The probability is increased in response to an acceptance input, the increase being determined in part on a measure of a predicted reduction in user satisfaction that would be associated with an additional rejection input. | 10-11-2012 |
20140012956 | REPLICATING DATA - The present invention concerns the replication of data, in particular the replication of data in a peer-to-peer network of mobile devices. Each device stores a plurality of data items. When two devices come into range, a decision as to whether to replicate a data item is made in dependence the extent to which that data item has been requested by other devices, and (b) the extent to which that data item is replicated on other devices. In this way, both the demand and supply of a data item are taken into account. | 01-09-2014 |
20140188974 | SYSTEM AND METHOD FOR ORCHESTRATING MASSIVELY DISTRIBUTED CONTENT DELIVERY NETWORKS - An apparatus and method are provided for tracking and positioning content within a domain including a plurality of devices that provide content data to users. The apparatus and associated method include a communication interface that receives requests for content from respective ones of the plurality of devices. An optimization processor analyzes all requests for each piece of content, and determines at least one of an actual request rate and a target request rate for each piece of content and, in response to the determination of the actual and target request rates, instructs individual devices of the plurality of devices to store respective pieces of content in a memory. | 07-03-2014 |
20140372480 | INTERACTIVE CONTENT SEARCH USING COMPARISONS - In interactive content search through comparisons, a search for a target object in a database is performed by finding the object most similar to the target from a small list of objects. A new object list is then presented based on the earlier selections. This process is repeated until the target is included in the list presented, at which point the search terminates. A solution to the interactive content search problem is provided under the scenario of heterogeneous demand, where target objects are selected from a non-uniform probability distribution. It has been assumed that objects are embedded in a doubling metric space which is fully observable to the search algorithm. Based on these assumptions, an efficient comparison-based search method is provided whose cost in terms of the number of queries can be bounded by the doubling constant of the embedding c, and the entropy of demand distribution, H. More precisely, the present principles show that the average search costs scales C | 12-18-2014 |
20150120762 | COMPARISON-BASED ACTIVE SEARCHING/LEARNING - A method is provided for performing a content search through comparisons, where a user is presented with two candidate objects and reveals which is closer to the user's intended target object. The disclosed principles provide active strategies for finding the user's target with few comparisons. The so-called rank-net strategy for noiseless user feedback is described. For target distributions with a bounded doubling constant, rank-net finds the target in a number of steps close to the entropy of the target distribution and hence of the optimum. The case of noisy user feedback is also considered. In that context a variant of rank-nets is also described, for which performance bounds within a slowly growing function (doubly logarithmic) of the optimum are found. Numerical evaluations on movie datasets show that rank-net matches the search efficiency of generalized binary search while incurring a smaller computational cost. | 04-30-2015 |
20150339493 | PRIVACY PROTECTION AGAINST CURIOUS RECOMMENDERS - A method and apparatus for protecting user privacy in a recommender system are described including determining what information to release to a user for a movie, transmitting the information to the user, accepting obfuscated input from the user and estimating the user's non-private feature vector. Also described are a method and apparatus for protecting user privacy in a recommender system including receiving movie information, accepting a user's movie feedback, accepting user's private information, calculating an obfuscation value and transmitting the obfuscation value. | 11-26-2015 |
20150339596 | Apparatus and Methods of Recommending Multiple Options to a Group of Remote Users and Forming an Agreement - Methods and apparatus for a system providing group recommendations, event scheduling, and forming consensus agreements among a group of disparately located users are provided by the present principles. Communication among the disparately located users may be achieved through social media tools, online polling, chatting, and texting. The methods and apparatus allow a user profile to be constructed based on ratings that a user provides to items in a database. The items may comprise such things as restaurants, movie theaters, or other entertainment and group activities. The items may comprise feature vectors including attributes of the individual items. With user profiles constructed, the methods and apparatus may allow prediction of a rating that an individual with a particular user profile may give to a similar item in a database. The system may be used to predict the best choice for a group activity by considering the ratings of all users within a group. Individual ratings may be weighted to give higher or lower priority to some users. The system may also recommend activities based on the users participating in the group, or allow the users to select other activities to be considered. In one exemplary embodiment, the system selects recommendations for the users, comprising elements such as movie title, theater location, seating, and prices. The system sends notifications to the users, collects preferences from the users, and determines a choice based on the collected preferences. The users are notified of the choice and given an opportunity to purchase tickets electronically. If so, they may receive electronic tickets, coupons, promotions, or offers. | 11-26-2015 |
20160110761 | FINDING THE SPACE SPANNED BY USER PROFILES FROM BINARY FEEDBACK - Finding the space spanned by user profiles of consumed items for making recommendations commences by first estimating a mean and covariance for a set of labeled items associated with a profile. Thereafter, a vector is identified that belongs to a convex cone spanned by the user profiles based on the estimated mean and covariance, the labels and items. The labels are mirrored in a negative space defined by the identified vector. The weighted covariance matrix is computed based on the mirrored labels; and eigenvalues and eigenvectors are computed of the weighted covariance matrix. A first set of eigenvalues share a value and wherein a remainder of the eigenvalues correspond to eigenvectors that span the profile. | 04-21-2016 |
Patent application number | Description | Published |
20120290622 | SENTIMENT AND FACTOR-BASED ANALYSIS IN CONTEXTUALLY-RELEVANT USER-GENERATED DATA MANAGEMENT - Techniques for sentiment and factor-based analysis in contextually-relevant user-generated data management are described, including evaluating data associated with a review displayed on an interface associated with a computing device, the data being retrieved by a crawler before being displayed on the interface, extracting a keyword from the review, performing an analysis of the review to identify one or more factors, and generating a landing page to aggregate content based on the keyword and the analysis of the one or more factors, and a pointer to the landing page, the pointer being configured to include the keyword and the one or more factors. | 11-15-2012 |
20120290908 | RETARGETING CONTEXTUALLY-RELEVANT USER-GENERATED DATA - Techniques for retargeting contextually-relevant user-generated data are described, including detecting an event associated with a widget embedded on a website, and configured to initiate a call to a service to retrieve content contextually relevant to the website, storing a file associated with a browser on a computing device, the file being configured to store the data, generating an identifier to send to the service when the file indicates the browser is configured to display other data associated with another website and being configured to provide a parameter to identify the content, retrieving the content using the identifier, the content being stored in a repository, rendering a display in an interface, and enabling a hyperlink associated with the content and configured to point to a website other than the website or another website, the content being retrieved from the website using a crawler. | 11-15-2012 |
20120290910 | RANKING SENTIMENT-RELATED CONTENT USING SENTIMENT AND FACTOR-BASED ANALYSIS OF CONTEXTUALLY-RELEVANT USER-GENERATED DATA - Techniques for ranking sentiment-related content using sentiment and factor-based analysis of contextually-relevant user-generated data is described, including generating a term, the term associated with a keyword and a factor, grouping user-generated content associated with the term, the user-generated content being retrieved by a crawler and stored in a database, assigning a rank to the term, the rank associated with one or more attributes of the user-generated content, and including a link associated with the term in a list, the list comprising a plurality of links associated with a plurality of terms, each of the plurality of terms having an assigned rank. | 11-15-2012 |
20130031183 | ELECTRONIC MAIL PROCESSING AND PUBLICATION FOR SHARED ENVIRONMENTS - Techniques for electronic mail processing and publication for shared environments are described, including evaluating a data packet indicating receipt of an electronic message at a shared destination, retrieving the electronic message from the shared destination, processing the electronic message to generate a processed message configured to be posted to a shared environment, and posting the processed message to the shared environment. | 01-31-2013 |
20130332251 | SYSTEM, COMPUTER PROGRAM PRODUCT AND COMPUTER IMPLEMENTED METHOD FOR PURCHASING ITEMS FROM A MERCHANT - Embodiments of the invention include systems, computer program products and computer implemented methods for allowing users to purchase one or more products from a merchant. Such embodiments may comprise a mobile device associated with a user, where the mobile device includes a memory having computer instructions that execute the steps of prompting the user to scan the code using the mobile device; translating the code to determine at least a product price and merchant identifier; creating a product purchase prompt on a display associated with the mobile device, and transmitting the product, product price and merchant identifier to a processing server to thereby facilitate an approval of a transaction between the user and the merchant. | 12-12-2013 |
Patent application number | Description | Published |
20140207718 | METHOD AND APPARATUS FOR IDENTIFYING USERS FROM RATING PATTERNS - Disclosed are methods and apparatus for identifying users of content. The methods include identifying contextual information of a group of users, gathering user access data of the users on the basis of the contextual information of the group of users, analyzing temporal information of the user access data, and identifying particular users in the group of users on the basis of the analyzed temporal information and the contextual information. | 07-24-2014 |
20150019469 | METHOD OF RECOMMENDING ITEMS TO A GROUP OF USERS - A method for generating a recommendation item for members of a group includes registering a plurality of users as members of the group, identifying a subgroup of members of the group of users wherein the subgroup requests a recommendation item from a recommendation engine, calculating, using a multi-armed bandit algorithm, a recommendation item for the subgroup of members. The recommendation item is provided to the subgroup members for their evaluation. After evaluating the recommendation item, the individual users rate the recommendation item which updates the recommendation engine with preferences representing the members of the subgroup. | 01-15-2015 |
20150088992 | CONTROLLING PEER SOJOURN TIME IN FILE SHARING SYSTEMS - A method for controlling the average time a peer spends in a swarm of peers in a file sharing system includes first establishing an autonomous mode of operation in the swarm of peers. In the autonomous mode, peers communicate only with other peers in their swarm in order to gain access to pieces of a desired file. If the swarm size meets a threshold size, then the file sharing system switches to a universal mode. In a universal mode, peers from one swarm are permitted to exchange desired file pieces with other peers in other swarms. If the desired file pieces held by peers within a swarm meets a threshold number, then the file sharing system transitions back to the autonomous mode of operation. | 03-26-2015 |
20150095271 | METHOD AND APPARATUS FOR CONTEXTUAL LINEAR BANDITS - A method of selection that maximizes an expected reward in a contextual multi-armed bandit setting gathers rewards from randomly selected items in a database of items, where the items correspond to arms in a contextual multi-armed bandit setting. Initially, an item is selected at random and is transmitted to a user device which generates a reward. The items and resulting rewards are recorded. Subsequently, a context is generated by the user device which causes a learning and selection engine to calculate an estimate for each arm in the specific context, the estimate calculated using the recorded items and resulting rewards. Using the estimate, an item from the database is selected and transferred to the user device. The selected item is chosen to maximize a probability of a reward from the user device. | 04-02-2015 |
20150112812 | METHOD AND APPARATUS FOR INFERRING USER DEMOGRAPHICS - A method to determine demographic information of a new user utilizing only ratings includes training an inference engine informed with a training data set which includes ratings and demographic information from a plurality of other users. The new user inputs ratings, such as movie ratings, and an inference engine determines demographic information of the new user. The demographic information of the new user can then be used to provide recommendations or to provide targeted advertisements to the new user. | 04-23-2015 |
20150324820 | INFERRING USER DEMOGRAPHIC INFORMATION FROM RATINGS - Existing recommendation systems leverage user social and demographic information, e.g., age, gender and political affiliation, to personalize content and make recommendations. However, users do not volunteer this information due to privacy concerns or to the lack of initiative in filling out their profile information. The current methods and apparatus provide principles in which the system may learn the private attribute for those users who do not voluntarily disclose them. In an exemplary embodiment, the system receives ratings for items, such as movies, for example, that may be used by a recommendation system. The inventive arrangements are based on novel usage of Bayesian matrix factorization in an active learning setting. Such a system can be carried out using significantly fewer rated items than previously proposed static inference methods. The system functions effectively without sacrificing the quality of the regular recommendations made to the user. | 11-12-2015 |
20150332705 | METHOD, APPARATUS AND SYSTEM FOR MICROPHONE ARRAY CALIBRATION - A method, apparatus and system for microphone array calibration include recording audio using at least two microphones, which comprise an array of microphones, using a target microphone of the array of microphones, determining an attenuation factor for audio originating from respective locations of other microphones of the array of microphones, using a target microphone of the array of microphones, determining a delay factor for audio originating from respective locations of other microphones of the array of microphones and implementing the determined attenuation factor and delay factor for removing audio originating from respective locations of the other microphones of the array of microphones from an audio signal captured by the target microphone. The method, apparatus and system then further include removing audio originating from respective locations of the other microphones of the array of microphones from an audio signal captured by the target microphone using beam-forming techniques. | 11-19-2015 |
20150339687 | PROPOSING OBJECTS TO A USER TO EFFICIENTLY DISCOVER DEMOGRAPHICS FROM ITEM RATINGS - The current methods and apparatus provide a system that learns a private attribute, such as gender, based on at least one iteration of presenting an item to a user and receiving ratings from the user for this item. In an exemplary embodiment, the system may solicit ratings for strategically selected items, such as movies for example, and then infers the user's gender. Based on the assessed confidence in the demographic selected, the system may repeat the selection, presentation and ratings of another item. The proposed system can strategically select the sequence of items that are presented to the user for a rating. By selecting the next item to be rated based on a maximum posterior probability confidence, a demographic with a certain threshold of confidence can be inferred. The inventive arrangements are based on novel usage of Bayesian matrix factorization in an active learning setting. Such a system is shown to be feasible and can be carried out using significantly fewer rated items than previously proposed static inference methods. | 11-26-2015 |
20150371169 | METHOD AND SYSTEM FOR DESIGNING A DATA MARKET EXPERIMENT - An apparatus and a method for designing a data market experiment given a fixed budget and a set of potential subjects for the experiment are described. An experimenter human subject, or any other kind of experiment through which it collects data, and can incentivize the participation of subjects in the experiment through monetary compensation. The experimenter observes some publicly known information about the subjects, as well as the money each potential subject requests to participate in the experiment. Based on this information, the method determines which users to pay, and how much, to participate in the experiment. The method views experimental design in a strategic setting, by studying mechanism design issues, such as incentivizing users to report a truthful value for their data. The method has the following properties of being budget feasible, computationally tractable, nearly-optimal, and truthful in that the subjects have no incentive to declare desired compensations that are untruthful. | 12-24-2015 |
20150371241 | USER IDENTIFICATION THROUGH SUBSPACE CLUSTERING - A method to detect a number of individual users included in a composite set of movie ratings having ratings from a plurality of individual users includes accessing the composite set of movie ratings and movie profiles and loading the composite set and movie profiles into a rating analysis engine. Processing the composite set along with the movie profiles determines a number of partitions present in the composite set, wherein the number of partitions is determined iteratively using subspace clustering of ratings from the composite set. The determined number of partitions is output and corresponds to the number of individual users included in the composite set of movie ratings. | 12-24-2015 |
20150381349 | PRIVACY-PRESERVING RIDGE REGRESSION USING MASKS - A method and system for privacy-preserving ridge regression using masks is provided. The method includes the steps of requesting a garbled circuit from a crypto service provider, collecting data from multiple users that has been formatted and encrypted using homomorphic encryption, summing the data that has been formatted and encrypted using homomorphic encryption, applying prepared masks to the summed data, receiving garbled inputs corresponding to prepared mask from the crypto service provider using oblivious transfer, and evaluating the garbled circuit from the crypto service provider using the garbled inputs and masked data. | 12-31-2015 |
20160036584 | PRIVACY-PRESERVING RIDGE REGRESSION USING PARTIALLY HOMOMORPHIC ENCRYPTION AND MASKS - A method and system for privacy-preserving ridge regression using partially homomorphic encryption and masks is provided. The method includes the steps of requesting a garbled circuit from a crypto service provider, collecting data from multiple users that has been formatted and encrypted using partially homomorphic encryption, summing the data that has been formatted and encrypted using partially homomorphic encryption, applying a prepared masks to the summed data, receiving garbled inputs corresponding to prepared mask from the crypto service provider using oblivious transfer, and evaluating the garbled circuit from the crypto service provider using the garbled inputs and masked data. | 02-04-2016 |