Patents by Inventor Pei Cao
Pei Cao 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).
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Patent number: 9652483Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: GrantFiled: November 23, 2015Date of Patent: May 16, 2017Assignee: Google Inc.Inventors: Pei Cao, Nadav Eiron, Soham Mazumdar, Anna L. Patterson, Russell Power, Yonatan Zunger
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Patent number: 9223877Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: GrantFiled: January 7, 2015Date of Patent: December 29, 2015Assignee: Google Inc.Inventors: Pei Cao, Nadav Eiron, Soham Mazumdar, Anna L. Patterson, Russell Power, Yonatan Zunger
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Patent number: 8943067Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: GrantFiled: March 15, 2013Date of Patent: January 27, 2015Assignee: Google Inc.Inventors: Pei Cao, Nadav Eiron, Soham Mazumdar, Anna L. Patterson, Russell Power, Yonatan Zunger
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Patent number: 8682901Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: GrantFiled: December 20, 2011Date of Patent: March 25, 2014Assignee: Google Inc.Inventors: Pei Cao, Nadav Eiron, Soham Mazumdar, Anna L. Patterson, Russell Power, Yonatan Zunger
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Patent number: 8600975Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: GrantFiled: April 9, 2012Date of Patent: December 3, 2013Assignee: Google Inc.Inventors: Pei Cao, Soham Mazumdar
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Patent number: 8572081Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for identifying non-compositional compounds. In one aspect, a method includes the actions of receiving a collection of phrases, each phrase including two or more words; for each phrase, determining if the phrase is a non-compositional compound, a non-compositional compound being a phrase of two or more words where the words composing the phrase have different meanings in a compound than their conventional meanings individual, the determining including: identifying a similar term for a term of the phrase, substituting the similar term for the term of the phrase to generate a substitute phrase, calculating a similarity between the phrase and the substitute phrase, and identifying the phrase as a non-compositional compound when the calculated similarity is less than a specified threshold value.Type: GrantFiled: January 30, 2012Date of Patent: October 29, 2013Assignee: Google Inc.Inventors: Stewart Yang, Fang Liu, Pei Cao
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Patent number: 8166021Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: GrantFiled: March 30, 2007Date of Patent: April 24, 2012Assignee: Google Inc.Inventors: Pei Cao, Soham Mazumdar
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Patent number: 8108391Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for identifying non-compositional compounds. In one aspect, a method includes the actions of receiving a collection of phrases, each phrase including two or more words; for each phrase, determining if the phrase is a non-compositional compound, a non-compositional compound being a phrase of two or more words where the words composing the phrase have different meanings in a compound than their conventional meanings individual, the determining including: identifying a similar term for a term of the phrase, substituting the similar term for the term of the phrase to generate a substitute phrase, calculating a similarity between the phrase and the substitute phrase, and identifying the phrase as a non-compositional compound when the calculated similarity is less than a specified threshold value.Type: GrantFiled: March 12, 2009Date of Patent: January 31, 2012Assignee: Google Inc.Inventors: Stewart Yang, Fang Liu, Pei Cao
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Patent number: 8090723Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: GrantFiled: March 2, 2010Date of Patent: January 3, 2012Assignee: Google Inc.Inventors: Pei Cao, Nadav Eiron, Soham Mazumdar, Anna L. Patterson, Russell Power, Yonatan Zunger
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Patent number: 8086594Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: GrantFiled: March 30, 2007Date of Patent: December 27, 2011Assignee: Google Inc.Inventors: Pei Cao, Soham Mazumdar, Vaibhav Mehta, Yonatan Zunger
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Publication number: 20100161617Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: ApplicationFiled: March 2, 2010Publication date: June 24, 2010Applicant: GOOGLE INC.Inventors: Pei Cao, Nadav Eiron, Soham Mazumdar, Anna L. Patterson, Russell Power, Yonatan Zunger
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Patent number: 7693813Abstract: An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are extracted from the document collection. Documents are the indexed according to their included phrases, using phrase posting lists. The phrase posting lists are stored in an cluster of index servers. The phrase posting lists can be tiered into groups, and sharded into partitions. Phrases in a query are identified based on possible phrasifications. A query schedule based on the phrases is created from the phrases, and then optimized to reduce query processing and communication costs. The execution of the query schedule is managed to further reduce or eliminate query processing operations at various ones of the index servers.Type: GrantFiled: March 30, 2007Date of Patent: April 6, 2010Assignee: Google Inc.Inventors: Pei Cao, Nadav Eiron, Soham Mazumdar, Anna Patterson, Russell Power, Yonatan Zunger
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Publication number: 20070016054Abstract: The present invention generally relates to medical devices, and more particularly to an improved medical imaging device. In one embodiment, an imaging device includes a drive shaft having proximal and distal ends received within the lumen; an imaging transducer coupled to the distal end of the drive shaft and positioned at the distal portion of the elongate member; and a flow detector coupled to the imaging transducer. The flow detector may include a forward facing ultrasound transducer configured to emit energy in the direction of the longitudinal axis of the imaging device and detect a Doppler shift in the received echoes. In the case where the imaging device is located in a vessel having blood flow, such information may be used to calculate the velocity of the blood flow. The imaging device may be configured to be located in a catheter or guidewire.Type: ApplicationFiled: July 1, 2005Publication date: January 18, 2007Inventors: Pei Cao, Jian Yuan, Richard Romley
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Publication number: 20070016055Abstract: The present invention generally relates to medical devices, and more particularly to an improved intravascular device. In one embodiment, an intravascular device includes a catheter having proximal and distal portions, and a phased array of imaging elements, having edge elements each having angles of emission, located in the distal portion of the catheter, wherein the phased array is concaved having a radius of curvature such that when the phased array is steered in a maximal azimuthal direction, the angles of emission of the edge elements are substantially similar.Type: ApplicationFiled: July 1, 2005Publication date: January 18, 2007Inventors: Pei Cao, Jian Yuan, Michael Tierney
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Publication number: 20060276711Abstract: The systems and methods described herein provide for a medical device insertable into the body of a living being having an imaging device with a layout that is adjustable from an undeployed layout, where the imaging device is insertable into the inner lumen of a medical device, to a larger deployed layout, where the imaging device preferably has a larger imaging aperture. The medical device can also include a flexible membrane coupled with or located on the distal end of the medical device. The flexible membrane can be expanded or inflated to create a spatial operating region for the deployed imaging device.Type: ApplicationFiled: June 3, 2005Publication date: December 7, 2006Inventors: Jian Yuan, Pei Cao, Richard Romley
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Publication number: 20060173350Abstract: The systems and methods described herein allow for three dimensional imaging with a medical ultrasound imaging system having an orientation adjustable imaging device. The imaging device can include a transducer array configured to image an imaging field in two dimensions. The imaging device can also include an orientation adjustment unit configured to adjust the orientation of the array in a third dimension. The array can be configured to image the two dimensional imaging field at multiple different orientations. An image processing system can be communicatively coupled with the array and configured to assemble the image data collected across each imaging field at multiple orientations of the array. The assembled data can then be displayed as a three dimensional image.Type: ApplicationFiled: January 11, 2005Publication date: August 3, 2006Inventors: Jian Yuan, Pei Cao, Richard Romley
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Publication number: 20060100522Abstract: The embodiments described herein provide for an ultrasound imaging device having a piezocomposite transducer. The imaging device is preferably insertable within a living being and configured to image the interior of the living being. The piezocomposite transducer can be formed from piezoceramic and polymeric materials. The piezocomposite transducer can be configured as a single element transducer or as a transducer array having one or more elements. Also provided is a method of manufacturing a piezocomposite transducer and a method of imaging with a piezocomposite transducer.Type: ApplicationFiled: November 8, 2004Publication date: May 11, 2006Inventors: Jian Yuan, Pei Cao, Richard Romley
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Patent number: D785877Type: GrantFiled: October 27, 2015Date of Patent: May 2, 2017Assignees: JIANGSU MIDEA CLEANING APPLIANCES CO., LTD, MIDEA GROUP CO., LTDInventors: Pei Cao, Yang Gu
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Patent number: D786517Type: GrantFiled: October 27, 2015Date of Patent: May 9, 2017Assignees: JIANGSU MIDEA CLEANING APPLIANCES CO., LTD, MIDEA GROUP CO., LTDInventors: Pei Cao, Yang Gu