Patents by Inventor Peiji Chen

Peiji Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11969805
    Abstract: A method and device for milling a large-diameter aspheric surface by using a splicing method and a polishing method to solve the problems of large time consumption and serious tool wear in the machining of a meter-scale large-diameter aspheric surface are disclosed. where an aspheric surface is discretized into a series of rings with different radii, and the rings are sequentially machined via generating cutting by using an annular grinding wheel tool with an outer diameter less than ¼ of a diameter of the aspheric surface; the rings are equally spaced, there are a total of N rings, and a width of any ring is jointly determined by the Nth ring, the (N?1)th ring, positioning accuracy and a generatrix equation of the aspheric surface; and the aspheric surface is enveloped by a large number of rings. A contact area between the tool and a workpiece surface is rings.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: April 30, 2024
    Assignee: SOOCHOW UNIVERSITY
    Inventors: Xi Chen, Zhuocheng Dai, Peiji Guo, Yongxiang Zhu, Chenchao Li
  • Publication number: 20200265694
    Abstract: A system to implement an aerial security network utilizing unmanned aerial vehicles (“UAVs”) to provide security surveillance, suspicious activity/target detection and tracking, and deterrence actions for a protected area. The system includes one or more UAVs to capture images or videos of a protected area, a plurality of sensors to provide sensor information, one or more aerial security hubs (ASHs) to receive sensor information from the plurality of sensors, and an aerial security service to detect a suspicious activity in the protected area based on the sensor information. Upon detecting the suspicious activity by the aerial security service, one or more ASHs may instruct one or more UAVs to collect evidence of detected suspicious activity and/or perform defensive actions to deter the suspicious activity. One or more users may be notified of the suspicious activity, may receive a real-time view of the suspicious activity, and may remotely control the UAVs.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 20, 2020
    Inventors: Ryan Guohong Xu, Peiji Chen
  • Publication number: 20150348086
    Abstract: Methods and systems are disclosed which allow shifting inventory to fulfill guaranteed delivery advertisement contracts. Inventory may be allocated from a supply of unallocated inventory to one or more advertisers in accordance with guaranteed delivery agreements. Inventory may be reserved for the one or more advertisers from the remaining supply of unallocated inventory. Inventory may then be allocated to an additional advertiser by using unallocated inventory or shifted inventory, or a combination of unallocated inventory and shifted inventory. The shifted inventory is shifted out of the allocation for the first advertiser and the shifted inventory is replaced by the reserve inventory for the respective advertiser.
    Type: Application
    Filed: August 12, 2015
    Publication date: December 3, 2015
    Applicant: YAHOO! INC.
    Inventors: Erik Vee, Dongni Chen, Peiji Chen, Satyen Kale, Srinath Mandalapu, Chandrashekhar Nagarajan
  • Patent number: 9135632
    Abstract: Methods and systems are disclosed which allow shifting inventory to fulfill guaranteed delivery advertisement contracts. Inventory may be allocated from a supply of unallocated inventory to one or more advertisers in accordance with guaranteed delivery agreements. Inventory may be reserved for the one or more advertisers from the remaining supply of unallocated inventory. Inventory may then be allocated to an additional advertiser by using unallocated inventory or shifted inventory, or a combination of unallocated inventory and shifted inventory. The shifted inventory is shifted out of the allocation for the first advertiser and the shifted inventory is replaced by the reserve inventory for the respective advertiser.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: September 15, 2015
    Assignee: Yahoo! Inc.
    Inventors: Erik Vee, Dongni Chen, Peiji Chen, Satyen Kale, Srinath Mandalapu, Chandrashekhar Nagarajan
  • Publication number: 20140201009
    Abstract: A system and method for dynamic pricing in a guaranteed display market includes: receiving attribute parameters and values for an incoming pricing query for an advertisement; calculating a base price for the advertisement using recent historical information from contracts matching the attribute parameters; calculating a price response by adjusting the base price to reflect market conditions; calculating a non-guaranteed display opportunity cost for the adjusted base price; and calculating a final price as a function of the adjusted base price and the non-guaranteed display opportunity cost, with the non-guaranteed display opportunity cost as a lower bound for the price.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 17, 2014
    Applicant: YAHOO! INC.
    Inventors: Jian Yang, Michael Schwarz, Vijay Bharadwaj, Peiji Chen
  • Publication number: 20140081743
    Abstract: A simulation framework for evaluating revenue that may use a pricing engine that runs at least one pricing algorithm with particular configurations and under particular model market conditions to provide revenue projections.
    Type: Application
    Filed: November 12, 2013
    Publication date: March 20, 2014
    Applicant: Yahoo! Inc.
    Inventors: Amita Gajewar, Jian Yang, Dongni Chen, Peiji Chen
  • Publication number: 20140081696
    Abstract: Systems and methods for automatically forecasting the future availability of one or more resources, such as Internet advertising opportunities, are described herein. In accordance with various embodiments, a forecasting model that accounts for event-driven resource availability is trained based both on historical supply data and calendar information specifying events and event duration. The trained forecasting model is then used to forecast the availability of resources at one or more specified future time periods. In accordance with certain embodiments, the forecasting model comprises a Gaussian process model that has an event-driven kernel as a covariance function.
    Type: Application
    Filed: November 25, 2013
    Publication date: March 20, 2014
    Applicant: Yahoo! Inc.
    Inventors: Konstantin Salomatin, Datong Chen, Qi He, Peiji Chen
  • Publication number: 20140058830
    Abstract: A method for evaluating sell through rate in on-line guaranteed display advertising systems includes steps or acts of: receiving a set of eligible advertisement samples for a selected profile for a contract at different time durations; receiving an allocation plan representative of an allocation of future impressions of currently booked contracts; receiving eligible and available impressions for the selected profile at the specific time duration, using the set of eligible samples and the allocation plan; computing a historical sell through rate of the selected profile for the specific time duration as one minus a quotient of available impressions divided by eligible impressions; and computing a target sell through rate for a future time duration by applying the historical sell through rate to the future time duration.
    Type: Application
    Filed: August 21, 2012
    Publication date: February 27, 2014
    Applicant: YAHOO! INC.
    Inventors: Jimmy Yang, Amita Gajewar, Dongni Chen, Peiji Chen
  • Publication number: 20140019232
    Abstract: Techniques are described herein for using an impression-trend technique to provide a display advertising supply forecast. A display advertising supply forecast is an estimate of a number of impressions, which are to occur in a future time period, that have specified attribute values. For example, the specified attribute values may be descriptive of impressions with respect to which an advertiser wishes to place ads. An impression-trend technique is a forecasting technique that uses trends regarding past impressions to forecast a number of future impressions that have specified attribute values. The past impressions include attribute values that are related to the specified attribute values.
    Type: Application
    Filed: September 19, 2013
    Publication date: January 16, 2014
    Applicant: Yahoo! Inc.
    Inventors: Erik Vee, Jayavel Shanmugasundaram, Long Ji Lin, Peiji Chen, Datong Chen, Qi He
  • Patent number: 8620720
    Abstract: Systems and methods for automatically forecasting the future availability of one or more resources, such as Internet advertising opportunities, are described herein. In accordance with various embodiments, a forecasting model that accounts for event-driven resource availability is trained based both on historical supply data and calendar information specifying events and event duration. The trained forecasting model is then used to forecast the availability of resources at one or more specified future time periods. In accordance with certain embodiments, the forecasting model comprises a Gaussian process model that has an event-driven kernel as a covariance function.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: December 31, 2013
    Assignee: Yahoo! Inc.
    Inventors: Konstantin Salomatin, Datong Chen, Qi He, Peiji Chen
  • Patent number: 8612274
    Abstract: A simulation framework for evaluating revenue that may use a pricing engine that runs at least one pricing algorithm with particular configurations and under particular model market conditions to provide revenue projections.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: December 17, 2013
    Assignee: Yahoo! Inc.
    Inventors: Amita Gajewar, Jian Yang, Dongni Chen, Peiji Chen
  • Publication number: 20130290069
    Abstract: A simulation framework for evaluating revenue that may use a pricing engine that runs at least one pricing algorithm with particular configurations and under particular model market conditions to provide revenue projections.
    Type: Application
    Filed: April 30, 2012
    Publication date: October 31, 2013
    Applicant: YAHOO! INC.
    Inventors: Amita Gajewar, Jian Yang, Dongni Chen, Peiji Chen
  • Patent number: 8554621
    Abstract: Techniques are described herein for using an impression-trend technique to provide a display advertising supply forecast. A display advertising supply forecast is an estimate of a number of impressions, which are to occur in a future time period, that have specified attribute values. For example, the specified attribute values may be descriptive of impressions with respect to which an advertiser wishes to place ads. An impression-trend technique is a forecasting technique that uses trends regarding past impressions to forecast a number of future impressions that have specified attribute values. The past impressions include attribute values that are related to the specified attribute values.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: October 8, 2013
    Assignee: Yahoo! Inc.
    Inventors: Erik Vee, Jayavel Shanmugasundaram, Long Ji Lin, Peiji Chen, Datong Chen, Qi He
  • Publication number: 20130246161
    Abstract: Systems and methods for adjusting online ads delivery pace derive, in a computer system, a current impression delivery for an ads display contract. A plurality of estimation bands are delivered corresponding to over delivery and under delivery for the ads display contract. A relative distance is determined between the current impression delivery and the plurality of estimation bands. An adjustment factor is selected according to the relative distance. The adjustment factor is sent to a database.
    Type: Application
    Filed: March 16, 2012
    Publication date: September 19, 2013
    Applicant: Yahoo! Inc.
    Inventors: Jason Zien, Erik Vee, Sergei Vassilvitskii, Srinath Mandalapu, Marco Manfai Yu, Peiji Chen, Chandrashekhar Nagarajan, Wenjing Ma
  • Publication number: 20130173384
    Abstract: Methods and systems are disclosed which allow shifting inventory to fulfill guaranteed delivery advertisement contracts. Inventory may be allocated from a supply of unallocated inventory to one or more advertisers in accordance with guaranteed delivery agreements. Inventory may be reserved for the one or more advertisers from the remaining supply of unallocated inventory. Inventory may then be allocated to an additional advertiser by using unallocated inventory or shifted inventory, or a combination of unallocated inventory and shifted inventory. The shifted inventory is shifted out of the allocation for the first advertiser and the shifted inventory is replaced by the reserve inventory for the respective advertiser.
    Type: Application
    Filed: December 28, 2011
    Publication date: July 4, 2013
    Applicant: Yahoo! Inc.
    Inventors: Erik Vee, Dongni Chen, Peiji Chen, Satyen Kale, Srinath Mandalapu, Chandrashekhar Nagarajan
  • Publication number: 20130166395
    Abstract: The present application provides systems and corresponding methods for creating a delivery allocation plan in a network-based environment. The methods may include receiving and storing advertising contracts and data related to the advertising contracts; constructing a bipartite graph based on the received contract data; annotating each demand node; and receiving impression data and other eligible contract data. Thereafter, the method may include for each impression, calculating a first supply value and for each contract, calculating a first demand value. The first demand value may be used to calculate a second supply value and a delivery allocation may be calculated using the second supply value and the second demand value for each contract.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 27, 2013
    Inventors: Sergei Vassilvitskii, Chandrashekhar Nagarajan, Peiji Chen, Jian Yang, John Tomlin, Vijay Bharadwaj, Erik Vee, WenJing Ma
  • Patent number: 8311882
    Abstract: An improved system and method for forecasting an inventory of online advertisement impressions for targeting profiles of attributes is provided. An index of advertisement impressions on display advertising properties may be built for a targeting profile of attributes from forecasted impression pools. Impression pools of advertisements sharing the same attributes and trend forecast data for web pages and advertisement placements on the web pages may be integrated to generate the forecasted impression pools. An index of several index tables may be generated from forecasted impression pools. A query may be submitted to obtain an inventory forecast of advertisement impressions for targeting profiles of attributes and the index may be searched to match forecasted impression pools for the targeted profile of attributes. Then the inventory forecast of advertisement impressions on display advertising properties may be returned as query results for the targeting profile of attributes.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: November 13, 2012
    Assignee: Yahoo! Inc.
    Inventors: Deepak K. Agarwal, Peiji Chen, Victor K. Chu, Donald Swanson, Mark Sordo, Long-Ji Lin, Danny Zhang
  • Publication number: 20120278129
    Abstract: Systems and methods for automatically forecasting the future availability of one or more resources, such as Internet advertising opportunities, are described herein. In accordance with various embodiments, a forecasting model that accounts for event-driven resource availability is trained based both on historical supply data and calendar information specifying events and event duration. The trained forecasting model is then used to forecast the availability of resources at one or more specified future time periods. In accordance with certain embodiments, the forecasting model comprises a Gaussian process model that has an event-driven kernel as a covariance function.
    Type: Application
    Filed: April 28, 2011
    Publication date: November 1, 2012
    Applicant: Yahoo! Inc.
    Inventors: Konstantin Salomatin, Datong Chen, Qi He, Peiji Chen
  • Publication number: 20120004957
    Abstract: Methods, systems, and apparatuses for generating supply forecasts for advertisement impressions are provided. Supply forecasts for future advertisement inventory are enabled to be determined that match attribute values received from a requester in a query or “contract.” Such supply forecasts may be determined based on cumulative or non-cumulative supply forecast values, and may be determined based on time series of supply forecast values for individual impressions or for blocks of impressions.
    Type: Application
    Filed: July 2, 2010
    Publication date: January 5, 2012
    Applicant: YAHOO! INC.
    Inventors: Datong Chen, Erik Vee, Jayanth Anandaram, Qi He, Jayavel Shanmugasundaram, Peiji Chen
  • Publication number: 20110231248
    Abstract: Techniques are described herein for using an impression-trend technique to provide a display advertising supply forecast. A display advertising supply forecast is an estimate of a number of impressions, which are to occur in a future time period, that have specified attribute values. For example, the specified attribute values may be descriptive of impressions with respect to which an advertiser wishes to place ads. An impression-trend technique is a forecasting technique that uses trends regarding past impressions to forecast a number of future impressions that have specified attribute values. The past impressions include attribute values that are related to the specified attribute values.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 22, 2011
    Applicant: YAHOO! INC.
    Inventors: Erik Vee, Jayavel Shanmugasundaram, Long Ji Lin, Peiji Chen, Datong Chen, Qi He