公开(公告)号：US09942220B2

公开(公告)日：2018-04-10

申请号：US15069820

申请日：2016-03-14

Applicant: Facebook, Inc.

Inventor： Andrei Bajenov ,  Jonathan H. Frank ,  Matthew Knight Jones ,  Alok Menghrajani ,  Christopher William Palow ,  Allan Stewart

IPC: H04L29/06 ,  G06F21/00 ,  G06F21/31 ,  G06F21/55

CPC classification number: H04L63/083 ,  G06F21/00 ,  G06F21/31 ,  G06F21/55

Abstract: User login information submitted as part of an attempt to log into a computer system is evaluated for unauthorized or illegitimate use based on indicators of suspicious behavior. Example indicators of suspicious behavior include whether the login information is known to have been compromised, whether the login attempt originates from a network source or a physical source that has previously originated an attempt to log in using login information known to have been compromised, and whether multiple login attempts using the login information from multiple users has originated from the source. A suspicion index can be calculated based on the presence of the indicators of suspicious behavior. The system can require enhanced authentication based on the measurement of suspicious behavior.

公开(公告)号：US09679078B2

公开(公告)日：2017-06-13

申请号：US14284318

申请日：2014-05-21

Applicant: Facebook, Inc.

Inventor： Abhinav Vora ,  Allan Stewart

IPC: G06F17/30

CPC classification number: G06F17/30528 ,  G06F17/3053 ,  G06F17/30554 ,  G06F17/30864 ,  G06F17/30958 ,  G06F17/3097

Abstract: In one embodiment, a method includes accessing a social graph comprising nodes and a edges connecting the nodes, receiving from a first user a query inputted at a search client, the search client being associated with context data from a page associated with the search client, such that the context data identifies one or more nodes associated with the page, generating search results corresponding to the query, wherein each of the search results corresponds to a node, and scoring the search results based at least in part on the context data associated with the search client. The context data may identify a social context of the page, which can include tags, comments, likes, commenters, and the like.

公开(公告)号：US20140317732A1

公开(公告)日：2014-10-23

申请号：US13867529

申请日：2013-04-22

Applicant: Facebook, Inc.

Inventor： Marion Beaufrere ,  Jan Smole ,  Rasit Onur Coskunseda ,  Ziad B. Traboulsi ,  Nasser Ahmed Al-Sherif ,  Allan Stewart

IPC: H04L29/06

CPC classification number: G06F17/30876 ,  G06Q10/10 ,  G06Q50/01 ,  H04L63/1441

Abstract: When a social networking system receives a report of malicious activity, the social networking system calculates disabled connectivity score for a user reporting the activity or identified by the report. The disabled connectivity score indicates how strongly the user is associated with other objects that have been disabled by the social networking system. Hence, the disabled connectivity score provides a measure of the user's trustworthiness that is used to determine a type of action to be taken in response to the report. Examples of actions that may be taken when a report is received include ignoring the report, further reviewing the report, or taking remedial action by disabling or deleting an object maintained by the social networking system that is the subject of the report.

Abstract translation: 当社交网络系统接收到恶意活动的报告时，社交网络系统计算报告活动或由报告识别的用户的残障连接分数。 禁用的连接分数表示用户与社交网络系统已被禁用的其他对象相关联的强度。 因此，残疾人连接分数提供了用户确定为响应报告而采取的行动类型的可信度的度量。 收到报告时可能采取的行动的例子包括忽略报告，进一步审查报告，或通过禁用或删除作为报告主题的社交网络系统维护的对象采取补救措施。

公开(公告)号：US09613153B2

公开(公告)日：2017-04-04

申请号：US14605603

申请日：2015-01-26

Applicant: Facebook, Inc.

Inventor： Marion Beaufrere ,  Jan Smole ,  Rasit Onur Coskunseda ,  Ziad B. Traboulsi ,  Nasser Ahmed Al-Sherif ,  Allan Stewart

IPC: G06F11/00 ,  G06F17/30 ,  H04L29/06 ,  G06Q50/00 ,  G06Q10/10

CPC classification number: G06F17/30876 ,  G06Q10/10 ,  G06Q50/01 ,  H04L63/1441

Abstract: When a social networking system receives a report of malicious activity, the social networking system calculates disabled connectivity score for a user reporting the activity or identified by the report. The disabled connectivity score indicates how strongly the user is associated with other objects that have been disabled by the social networking system. Hence, the disabled connectivity score provides a measure of the user's trustworthiness that is used to determine a type of action to be taken in response to the report. Examples of actions that may be taken when a report is received include ignoring the report, further reviewing the report, or taking remedial action by disabling or deleting an object maintained by the social networking system that is the subject of the report.

公开(公告)号：US09378465B2

公开(公告)日：2016-06-28

申请号：US13872811

申请日：2013-04-29

Applicant: Facebook, Inc.

Inventor： Allan Stewart ,  Eugene Zarakhovsky ,  Christopher Palow ,  Chetan Gowda ,  Brent Dorman

IPC: G06N5/02 ,  G06N99/00

CPC classification number: G06N99/005

Abstract: A method of operation of a URL spam detection system includes: identifying a feature dimension of a user action on a social networking system to detect anomalies; extracting URL chunks from a content associated with the user action; aggregating a non-content feature of the user action along the feature dimension into a URL distribution store to produce a feature distribution for each of the URL chunks; determining whether the feature distribution of a particular URL chunk within the URL chunks exceeds an expectation threshold for the feature dimension; and classifying the particular URL chunk as an illegitimate URL when the feature distribution exceeds the expectation threshold to restrict access to a particular URL chunk on a social networking system.

Abstract translation: URL垃圾邮件检测系统的操作方法包括：识别社交网络系统上的用户动作的特征维度以检测异常; 从与用户操作相关联的内容中提取URL块; 将沿着所述特征维度的所述用户动作的非内容特征聚合到URL分发存储器中，以为每个所述URL块生成特征分布; 确定所述URL块内的特定URL块的特征分布是否超过所述特征维度的期望阈值; 并且当特征分布超过期望阈值以限制对社交网络系统上的特定URL块的访问时，将特定URL块分类为非法URL。

公开(公告)号：US20160162491A1

公开(公告)日：2016-06-09

申请号：US15040853

申请日：2016-02-10

Applicant: Facebook, Inc.

Inventor： Allan Stewart

IPC: G06F17/30

CPC classification number: G06F17/3053 ,  G06F17/30554 ,  G06F17/30867 ,  G06F17/30958

Abstract: In one embodiment, a method includes accessing a data set comprising a list of objects matching a query, a pre-determined static-rank for each object calculated based on a static-scoring algorithm, and a final-rank for each object calculated based on a final-scoring algorithm, and revising the static-scoring algorithm based on a comparison of the static-ranks and the final-ranks of each object listed in the data set, where the static-scoring algorithm is revised in order to reduce a difference between the static-ranks and final-ranks of the objects listed in the data set.

Abstract translation: 在一个实施例中，一种方法包括访问包括与查询匹配的对象的列表的数据集，基于静态评分算法计算的每个对象的预定静态等级以及基于静态评分算法计算的每个对象的最终等级 最终计分算法，并且基于静态排序和数据集中列出的每个对象的最终排列的比较来修改静态评分算法，其中修改静态评分算法以减少差异 在数据集中列出的对象的静态排名和最终排名之间。

公开(公告)号：US09317614B2

公开(公告)日：2016-04-19

申请号：US13954695

申请日：2013-07-30

Applicant: Facebook, Inc.

Inventor： Allan Stewart

IPC: G06F17/30

CPC classification number: G06F17/3053 ,  G06F17/30554 ,  G06F17/30867 ,  G06F17/30958

Abstract: In one embodiment, a method includes accessing a set of queries of an online social network received from one or more users of the online social network, retrieving for each query a number of objects that match at least a portion of the query from one or more data stores associated with the online social network, where each object is associated with a pre-determined static-score based on a static-scoring algorithm, calculating a final-score for each retrieved object based on a final-scoring algorithm, and determining one or more revised static-scores for one or more of the retrieved objects based on a comparison of the final-scores and the static-scores of the retrieved objects.

Abstract translation: 在一个实施例中，一种方法包括访问从在线社交网络的一个或多个用户接收的在线社交网络的一组查询，为每个查询检索匹配来自一个或多个查询的至少一部分的一些对象 与在线社交网络相关联的数据存储，其中每个对象基于静态评分算法与预定的静态评分相关联，基于最终得分算法计算每个检索到的对象的最终得分，并且确定一个 基于最终得分和所检索对象的静态分数的比较，对于一个或多个检索到的对象，修改或更多修正的静态分数。

公开(公告)号：US10592511B2

公开(公告)日：2020-03-17

申请号：US15499720

申请日：2017-04-27

Applicant: Facebook, Inc.

Inventor： Abhinav Vora ,  Allan Stewart

IPC: G06F16/2457 ,  G06F16/248 ,  G06F16/951 ,  G06F16/901 ,  G06F16/9032

Abstract: In one embodiment, a method includes receiving, from a client system, a query inputted by a first user at a search client, the search client being associated with context data from a page associated with the search client. The context data identifies: a type of the page associated with the search client, a social context of the page associated with the search client, and a threshold number of search results for display. The method includes identifying one or more entities matching the query and ranking each of the identified entities based at least in part on the social context and the type of the page associated with the search client. The method includes sending, to the client system, instructions for presenting a search-results interface including the threshold number of search results corresponding to the threshold number of top ranking identified entities.

公开(公告)号：US10324928B2

公开(公告)日：2019-06-18

申请号：US15337452

申请日：2016-10-28

Applicant: Facebook, Inc.

Inventor： Rajat Raina ,  Allan Stewart ,  Li-Tal Mashiach

IPC: G06F16/00 ,  G06F16/9535 ,  G06F16/2453 ,  G06F16/901

Abstract: In one embodiment, a method includes accessing a data set including a list of objects matching a query command and a score for each of the listed objects, where the query command is generated by parsing a query using a parsing algorithm, and where the score for each of the listed objects is calculated based on a scoring algorithm. The method also includes generating multiple subsets of the data set, each subset including one or more of the listed objects, and calculating, for each subset, a measure of score-quality associated with the scores of the objects in the subset and a measure of CPU-power associated with an amount of processing power required for retrieving the objects in the subset. The method also includes revising the parsing algorithm based on a comparison of the measures of score-quality and the measures of CPU-power associated with one or more of the subsets.

公开(公告)号：US10255331B2

公开(公告)日：2019-04-09

申请号：US15653351

申请日：2017-07-18

Applicant: Facebook, Inc.

Inventor： Allan Stewart

IPC: G06F17/30

Abstract: In one embodiment, a method includes receiving an indication that a first user has interacted with a first object within a newsfeed of an online social network, the first object including one or more n-grams, and identifying a list of second objects from one or more data stores, each second object matching one or more of the n-grams from the first object and being identified based at least in part on a predetermined static-rank of the second object. The method also includes calculating a final-rank for each of the identified second objects and determining one or more revised static-ranks for one or more of the identified second objects based on a comparison of the final-ranks and the static-ranks of the identified second objects.