Methods and systems for anomaly detection in small datasets
    1.
    发明申请
    Methods and systems for anomaly detection in small datasets 有权
    小数据集异常检测方法与系统

    公开(公告)号:US20060031150A1

    公开(公告)日:2006-02-09

    申请号:US11022402

    申请日:2004-12-27

    IPC分类号: G06Q40/00

    摘要: A technique for detecting anomalous values in a small set of financial metrics makes use of context data that is determined based upon the characteristics of the target company being evaluated. Context data is selected to represent the historical values of the financial metric for the target company or the simultaneous performance of peer companies. Using the context data, an anomaly score for the financial metric is calculated representing the degree to which the value of the financial metric is an outlier among the context data. This can be done using an exceptional statistical technique. The anomaly score can be used to evaluate the risks associated with business transactions related to the target company.

    摘要翻译: 用于检测一小组财务指标中的异常值的技术利用根据正在评估的目标公司的特征确定的上下文数据。 选择上下文数据以表示目标公司的财务指标的历史值或同业公司的同时表现。 使用上下文数据,计算财务度量的异常分数,其表示在上下文数据中财务度量的值是异常值的程度。 这可以使用特殊的统计技术来完成。 异常分数可用于评估与目标公司相关的业务交易相关风险。

    METHODS AND SYSTEMS FOR GENERATING TRANSITION PROBABILITY MATRICES THROUGH AN OPTIMIZATION FRAMEWORK
    2.
    发明申请
    METHODS AND SYSTEMS FOR GENERATING TRANSITION PROBABILITY MATRICES THROUGH AN OPTIMIZATION FRAMEWORK 有权
    通过优化框架生成过渡可行性矩阵的方法和系统

    公开(公告)号:US20110246386A9

    公开(公告)日:2011-10-06

    申请号:US12336360

    申请日:2008-12-16

    IPC分类号: G06Q40/00 G06N5/02 G06F15/18

    摘要: A method for generating an optimized transition probability matrix (OTPM) is provided. The method is performed using a computer system coupled to a database. The method includes storing in the database financial data including obligor credit ratings, generating multi-period empirical transition probability matrices (ETPMs) for a selected time horizon using the financial data stored within the database, generating a mathematical expression to minimize a difference between target ETPM values and candidate OTPM values, and calculating the OTPM from the generated mathematical expression and the financial data stored within the database, wherein the calculated OTPM includes a first set of optimized transition probability values for predicting a likelihood that a credit rating of an obligor will migrate from one credit state to another credit state during a first time interval in the future.

    摘要翻译: 提供了一种用于生成优化的转移概率矩阵(OTPM)的方法。 该方法使用耦合到数据库的计算机系统来执行。 该方法包括在数据库中存储财务数据,包括义务人信用评级,使用存储在数据库内的财务数据为所选择的时间范围生成多期经验转移概率矩阵(ETPM),生成数学表达式以最小化目标ETPM之间的差异 值和候选OTPM值,以及从生成的数学表达式和存储在数据库中的财务数据计算OTPM,其中所计算的OTPM包括用于预测义务人的信用评级将迁移的可能性的优化转移概率值的第一组 在未来的第一个时间间隔内从一个信用状态到另一个信用状态。

    METHODS AND SYSTEMS FOR GENERATING TRANSITION PROBABILITY MATRICES THROUGH AN OPTIMIZATION FRAMEWORK
    3.
    发明申请
    METHODS AND SYSTEMS FOR GENERATING TRANSITION PROBABILITY MATRICES THROUGH AN OPTIMIZATION FRAMEWORK 有权
    通过优化框架生成过渡可行性矩阵的方法和系统

    公开(公告)号:US20100153299A1

    公开(公告)日:2010-06-17

    申请号:US12336360

    申请日:2008-12-16

    IPC分类号: G06Q40/00 G06N5/02 G06F15/18

    摘要: A method for generating an optimized transition probability matrix (OTPM) is provided. The method is performed using a computer system coupled to a database. The method includes storing in the database financial data including obligor credit ratings, generating multi-period empirical transition probability matrices (ETPMs) for a selected time horizon using the financial data stored within the database, generating a mathematical expression to minimize a difference between target ETPM values and candidate OTPM values, and calculating the OTPM from the generated mathematical expression and the financial data stored within the database, wherein the calculated OTPM includes a first set of optimized transition probability values for predicting a likelihood that a credit rating of an obligor will migrate from one credit state to another credit state during a first time interval in the future.

    摘要翻译: 提供了一种用于生成优化的转移概率矩阵(OTPM)的方法。 该方法使用耦合到数据库的计算机系统来执行。 该方法包括在数据库中存储财务数据,包括义务人信用评级,使用存储在数据库内的财务数据为所选择的时间范围生成多期经验转移概率矩阵(ETPM),生成数学表达式以最小化目标ETPM之间的差异 值和候选OTPM值,以及从生成的数学表达式和存储在数据库中的财务数据计算OTPM,其中所计算的OTPM包括用于预测义务人的信用评级将迁移的可能性的优化转移概率值的第一组 在未来的第一个时间间隔内从一个信用状态到另一个信用状态。

    Methods and systems for visualizing financial anomalies
    5.
    发明申请
    Methods and systems for visualizing financial anomalies 审中-公开
    可视化财务异常的方法和系统

    公开(公告)号:US20060059063A1

    公开(公告)日:2006-03-16

    申请号:US11028685

    申请日:2005-01-05

    IPC分类号: G06Q40/00

    CPC分类号: G06Q30/02 G06Q40/00

    摘要: A visualization technique for directing the attention of analysts to anomalous values of performance measures associated with a target entity is described. A grid of cells is created where each row represents a particular performance metric, and each column a particular time period. For each cell, an anomaly score is calculated associated with the performance metric and time period corresponding to the row and column of the cell. The anomaly score is based on the value of the performance metric for that particular entity for that time period, as well as context data. The context data is selected to represent the historical values of the performance metric for the target entity or the simultaneous performance of peer entities. The anomaly score is calculated using an exceptional statistical technique, and a display characteristic is associated with the value of the anomaly score based upon the range into which the anomaly score falls. The display characteristic is displayed within the cell on the grid, forming an anomaly map that allows identification of patterns among the performance metrics.

    摘要翻译: 描述了一种用于将分析者的关注引导到与目标实体相关联的性能测量的异常值的可视化技术。 创建单元格网格,其中每行表示特定的性能指标,每列表示特定的时间段。 对于每个单元,计算与对应于单元格的行和列的性能度量和时间段相关联的异常分数。 异常分数基于该时间段内该特定实体的绩效指标值以及上下文数据。 选择上下文数据以表示目标实体的性能度量的历史值或对等实体的同时执行。 使用异常统计技术计算异常得分,并且显示特征与异常评分落入异常得分的范围相关联。 显示特性显示在网格上的单元格内,形成允许在性能度量中识别图案的异常图。