公开(公告)号：US09223877B1

公开(公告)日：2015-12-29

申请号：US14591746

申请日：2015-01-07

Applicant: Google Inc.

Inventor： Pei Cao ,  Nadav Eiron ,  Soham Mazumdar ,  Anna L. Patterson ,  Russell Power ,  Yonatan Zunger

IPC: G06F17/30

CPC classification number: G06F17/30336 ,  G06F17/30011 ,  G06F17/30616 ,  G06F17/30864 ,  Y10S707/99931

Abstract: 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.

公开(公告)号：US10152535B1

公开(公告)日：2018-12-11

申请号：US14057681

申请日：2013-10-18

Applicant: GOOGLE INC.

Inventor： Pei Cao ,  Sohem Mazumdar

IPC: G06F17/30

Abstract: 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.

公开(公告)号：US20180005666A1

公开(公告)日：2018-01-04

申请号：US15199269

申请日：2016-06-30

Applicant: Google Inc.

Inventor： Weilong Yang ,  Min-Hsuan Tsai ,  Zheng Sun ,  Pei Cao ,  Tomas Izo

IPC: G11B27/034 ,  G06T7/20 ,  G11B27/10 ,  H04N17/00

CPC classification number: G11B27/034 ,  G06F16/739 ,  G06F17/241 ,  G06K9/00765 ,  G06T7/20 ,  G06T7/97 ,  G06T2207/10016 ,  G11B27/031 ,  G11B27/105 ,  G11B27/28 ,  G11B27/326 ,  H04N5/225 ,  H04N17/004 ,  H04N21/23418 ,  H04N21/8549

Abstract: A method of generating a moving thumbnail is disclosed. The method includes sampling video frames of a video item. The method further includes determining frame-level quality scores for the sampled video frames. The method also includes determining multiple group-level quality scores for multiple groups of the sampled video frames using the frame-level quality scores of the sampled video frames. The method further includes selecting one of the groups of the sampled video frames based on the multiple group-level quality scores. The method includes creating a moving thumbnail using a subset of the video frames that have timestamps within a range from the start timestamp to the end timestamp.

公开(公告)号：US08943067B1

公开(公告)日：2015-01-27

申请号：US13842731

申请日：2013-03-15

Applicant: Google Inc.

Inventor： Pei Cao ,  Nadav Eiron ,  Soham Mazumdar ,  Anna L. Patterson ,  Russell Power ,  Yonatan Zunger

IPC: G01F7/00 ,  G06F17/30

CPC classification number: G06F17/30336 ,  G06F17/30011 ,  G06F17/30616 ,  G06F17/30864 ,  Y10S707/99931

Abstract: 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.

Abstract translation: 信息检索系统使用短语来索引，检索，组织和描述文档。 短语从文档集中提取。 文件根据所包含的短语索引，使用短语发布列表。 短语发布列表存储在索引服务器的集群中。 短语列表可以分组成分组，并分成分区。 查询中的短语是根据可能的短语来确定的。 从短语中创建基于短语的查询调度，然后进行优化，以减少查询处理和通信成本。 管理查询调度的执行以进一步减少或消除索引服务器中的各个查询处理操作。

公开(公告)号：US10347294B2

公开(公告)日：2019-07-09

申请号：US15199269

申请日：2016-06-30

Applicant: Google Inc.

Inventor： Weilong Yang ,  Min-Hsuan Tsai ,  Zheng Sun ,  Pei Cao ,  Tomas Izo

IPC: G11B27/034 ,  G11B27/031 ,  G11B27/28 ,  G11B27/32 ,  G11B27/10 ,  G06T7/20 ,  G06T7/00 ,  G06F16/738 ,  G06F17/24 ,  G06K9/00 ,  H04N5/14 ,  H04N5/225 ,  H04N21/234 ,  H04N21/8549 ,  H04N17/00

Abstract: A method of generating a moving thumbnail is disclosed. The method includes sampling video frames of a video item. The method further includes determining frame-level quality scores for the sampled video frames. The method also includes determining multiple group-level quality scores for multiple groups of the sampled video frames using the frame-level quality scores of the sampled video frames. The method further includes selecting one of the groups of the sampled video frames based on the multiple group-level quality scores. The method includes creating a moving thumbnail using a subset of the video frames that have timestamps within a range from the start timestamp to the end timestamp.

公开(公告)号：US09652483B1

公开(公告)日：2017-05-16

申请号：US14949194

申请日：2015-11-23

Applicant: Google Inc.

Inventor： Pei Cao ,  Nadav Eiron ,  Soham Mazumdar ,  Anna L. Patterson ,  Russell Power ,  Yonatan Zunger

IPC: G06F17/30

CPC classification number: G06F17/30336 ,  G06F17/30011 ,  G06F17/30616 ,  G06F17/30864 ,  Y10S707/99931

Abstract: 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.