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    • 1. 发明授权
    • Efficient algorithm for pairwise preference learning
    • 用于成对偏好学习的高效算法
    • US08280829B2
    • 2012-10-02
    • US12504460
    • 2009-07-16
    • Olivier ChapelleSathiya Keerthi Selvaraj
    • Olivier ChapelleSathiya Keerthi Selvaraj
    • G06F15/18
    • G06N99/005
    • In one embodiment, training a ranking model comprises: accessing the ranking model and an objective function of the ranking model; accessing one or more preference pairs of objects, wherein for each of the preference pairs of objects comprising a first object and a second object, there is a preference between the first object and the second object with respect to the particular reference, and the first object and the second object each has a feature vector comprising one or more feature values; and training the ranking model by minimizing the objective function using the preference pairs of objects, wherein for each of the preference pairs of objects, a difference between the first feature vector of the first object and the second feature vector of the second object is not calculated.
    • 在一个实施例中,训练排名模型包括:访问排名模型和排名模型的目标函数; 访问一个或多个偏好对对,其中对于包括第一对象和第二对象的对象的每个优选对,在第一对象和第二对象之间存在关于特定引用的偏好,并且第一对象 并且所述第二对象各自具有包括一个或多个特征值的特征向量; 并且通过使用对象的偏好对最小化目标函数来训练排名模型,其中对于每个偏好对的对象,不计算第一对象的第一特征向量与第二对象的第二特征向量之间的差异 。
    • 2. 发明申请
    • System and method for training a multi-class support vector machine to select a common subset of features for classifying objects
    • 用于训练多类支持向量机的系统和方法,以选择用于分类对象的特征的公共子集
    • US20090150309A1
    • 2009-06-11
    • US12001932
    • 2007-12-10
    • Olivier ChapelleSathiya Keerthi Selvaraj
    • Olivier ChapelleSathiya Keerthi Selvaraj
    • G06F15/18
    • G06K9/6249G06K9/6269
    • An improved system and method is provided for training a multi-class support vector machine to select a common subset of features for classifying objects. A multi-class support vector machine generator may be provided for learning classification functions to classify sets of objects into classes and may include a sparse support vector machine modeling engine for training a multi-class support vector machine using scaling factors by simultaneously selecting a common subset of features iteratively for all classes from sets of features representing each of the classes. An objective function using scaling factors to ensure sparsity of features may be iteratively minimized, and features may be retained and added until a small set of features stabilizes. Alternatively, a common subset of features may be found by iteratively removing at least one feature simultaneously for all classes from an active set of features initialized to represent the entire set of training features.
    • 提供了一种改进的系统和方法,用于训练多类支持向量机以选择用于分类对象的特征的公共子集。 可以提供多类支持向量机生成器用于学习分类功能以将对象集合分类到类中,并且可以包括稀疏支持向量机建模引擎,用于使用缩放因子来同时选择公共子集来训练多类支持向量机 的特征迭代地为表示每个类的特征的集合的所有类。 使用缩放因子以确保特征的稀疏性的目标函数可以被迭代地最小化,并且可以保留和添加特征,直到一小组特征稳定。 或者,可以通过从被初始化为表示整套训练特征的活动特征集合中的所有类别同时迭代地去除至少一个特征来发现特征的公共子集。
    • 3. 发明申请
    • EFFICIENT ALGORITHM FOR PAIRWISE PREFERENCE LEARNING
    • 高效优先学习的有效算法
    • US20110016065A1
    • 2011-01-20
    • US12504460
    • 2009-07-16
    • Olivier ChapelleSathiya Keerthi Selvaraj
    • Olivier ChapelleSathiya Keerthi Selvaraj
    • G06F15/18
    • G06N99/005
    • In one embodiment, training a ranking model comprises: accessing the ranking model and an objective function of the ranking model; accessing one or more preference pairs of objects, wherein for each of the preference pairs of objects comprising a first object and a second object, there is a preference between the first object and the second object with respect to the particular reference, and the first object and the second object each has a feature vector comprising one or more feature values; and training the ranking model by minimizing the objective function using the preference pairs of objects, wherein for each of the preference pairs of objects, a difference between the first feature vector of the first object and the second feature vector of the second object is not calculated.
    • 在一个实施例中,训练排名模型包括:访问排名模型和排名模型的目标函数; 访问一个或多个偏好对对,其中对于包括第一对象和第二对象的对象的每个优选对,在第一对象和第二对象之间存在关于特定引用的偏好,并且第一对象 并且所述第二对象各自具有包括一个或多个特征值的特征向量; 并且通过使用对象的偏好对最小化目标函数来训练排名模型,其中对于每个偏好对的对象,不计算第一对象的第一特征向量与第二对象的第二特征向量之间的差异 。
    • 4. 发明授权
    • System and method for training a multi-class support vector machine to select a common subset of features for classifying objects
    • 用于训练多类支持向量机的系统和方法,以选择用于分类对象的特征的公共子集
    • US07836000B2
    • 2010-11-16
    • US12001932
    • 2007-12-10
    • Olivier ChapelleSathiya Keerthi Selvaraj
    • Olivier ChapelleSathiya Keerthi Selvaraj
    • G06F15/18G06E1/00G06E3/00G06G7/00
    • G06K9/6249G06K9/6269
    • An improved system and method is provided for training a multi-class support vector machine to select a common subset of features for classifying objects. A multi-class support vector machine generator may be provided for learning classification functions to classify sets of objects into classes and may include a sparse support vector machine modeling engine for training a multi-class support vector machine using scaling factors by simultaneously selecting a common subset of features iteratively for all classes from sets of features representing each of the classes. An objective function using scaling factors to ensure sparsity of features may be iteratively minimized, and features may be retained and added until a small set of features stabilizes. Alternatively, a common subset of features may be found by iteratively removing at least one feature simultaneously for all classes from an active set of features initialized to represent the entire set of training features.
    • 提供了一种改进的系统和方法,用于训练多类支持向量机以选择用于分类对象的特征的公共子集。 可以提供多类支持向量机生成器用于学习分类功能以将对象集合分类到类中,并且可以包括稀疏支持向量机建模引擎,用于使用缩放因子来同时选择公共子集来训练多类支持向量机 的特征迭代地为表示每个类的特征的集合的所有类。 使用缩放因子以确保特征的稀疏性的目标函数可以被迭代地最小化,并且可以保留和添加特征,直到一小组特征稳定。 或者,可以通过从被初始化为表示整套训练特征的活动特征集合中的所有类别同时迭代地去除至少一个特征来发现特征的公共子集。
    • 9. 发明申请
    • GRADIENT BASED OPTIMIZATION OF A RANKING MEASURE
    • 排名测度的梯度优化
    • US20090089274A1
    • 2009-04-02
    • US11863453
    • 2007-09-28
    • Olivier Chapelle
    • Olivier Chapelle
    • G06F7/00G06F17/15
    • G06F17/30675G06F17/30864
    • Methods, systems, and apparatuses for generating relevance functions for ranking documents obtained in searches are provided. One or more features to be used as predictor variables in the construction of a relevance function are determined. The relevance function is parameterized by one or more coefficients. A query error is defined that measures a difference between a relevance ranking generated by the relevance function and a training set relevance ranking based on a query and a set of scored documents associated with the query. The query error is a continuous function of the coefficients and aims at approximating errors measures commonly used in Information Retrieval. Values for the coefficients of the relevance function are determined that substantially minimize an objective function that depends on the defined query error.
    • 提供了用于产生用于对在搜索中获得的文档进行排序的相关性功能的方法,系统和装置。 确定在构建相关函数中用作预测变量的一个或多个特征。 相关函数由一个或多个系数参数化。 定义了一种查询错误,其测量相关性功能产生的相关性排名与基于查询的一组训练集相关性排序与与该查询相关联的一组计分文档之间的差异。 查询错误是系数的连续函数,旨在近似信息检索中常用的错误度量。 确定相关函数的系数的值,其基本上最小化取决于定义的查询错误的目标函数。