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    • 1. 发明授权
    • Method and a device for frequency counting
    • 方法和频率计数装置
    • US09280607B2
    • 2016-03-08
    • US10548741
    • 2003-03-07
    • Hannu ToivonenAntti SorvariMarkus Kähäri
    • Hannu ToivonenAntti SorvariMarkus Kähäri
    • G06F15/173G06F17/30
    • G06F17/30884
    • A memory efficient method and electronic device for counting frequencies of various events. The structure for storing frequency data comprises primary (204) and secondary (206) storages which contain frequency data (208, 210, 214) in different levels of detail. The primary storage (204) is a detailed storage comprising both event type and count information units in a fully restorable form. The secondary storage (206) is targeted for more infrequent events with lower level of detail and constructed as an array of count values addressed by a hash function using event type as an input. Another option is to derive a shortened ID from the event type by utilizing a hash function and exploit the ID as an addressing key for the corresponding count. Events are moved between primary (204) and secondary (206) storages depending on the detected event type frequencies. The invention is utilized in a recommendation engine for grading and sorting bookmarks stored in browsers for accessing the Internet.
    • 一种用于计算各种事件的频率的记忆有效方法和电子装置。 用于存储频率数据的结构包括主要(204)和次级(206)存储器,其包含不同细节级别的频率数据(208,210,214)。 主存储器(204)是包括完全可恢复形式的事件类型和计数信息单元的详细存储器。 辅助存储器(206)的目标是具有较低细节级别的更罕见的事件,并被构造为使用事件类型作为输入的散列函数寻址的计数值的数组。 另一个选择是通过利用散列函数从事件类型中导出缩短的ID,并利用该ID作为相应计数的寻址密钥。 根据检测到的事件类型频率,事件在主(204)和次(206)存储之间移动。 本发明用于推荐引擎,用于对存储在浏览器中的用于访问因特网的书签进行分级和分类。