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Point of interest (POI) data redundancy detection method and device

A technology of data redundancy and detection method, applied in the field of geographic information, can solve the problems of inability to realize redundant detection, inaccurate longitude and latitude information, etc.

Active Publication Date: 2014-09-17
ALIBABA GRP HLDG LTD
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Problems solved by technology

However, in practical applications, it is found that the latitude and longitude information contained in many POI data is not accurate, or even does not contain latitude and longitude information. For this type of data, the above scheme cannot achieve effective redundant detection.

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  • Point of interest (POI) data redundancy detection method and device
  • Point of interest (POI) data redundancy detection method and device
  • Point of interest (POI) data redundancy detection method and device

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Embodiment Construction

[0026] For a piece of POI data, it must contain at least two basic information of "name" and "location", and some POI data will further include auxiliary information such as "category", "contact number", and "data source". Among them, the "location" information generally includes two description forms: one is to describe the location of the POI by latitude and longitude, and the other is to describe the location of the POI by address text. A piece of POI data can contain latitude and longitude information and address description information at the same time. If the latitude and longitude information in the POI data is accurate enough, this POI data is called standard POI data; if the POI data does not contain latitude and longitude information, or the latitude and longitude information is not accurate enough, this POI data is called non-standard POI data.

[0027] Traditional POI data is collected by a professional map data provider, and its data format is standard, including ...

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Abstract

The invention discloses a point of interest (POI) data redundancy detection method and device. The POI data redundancy detection method comprises the following steps: determining the geographic area of a POI according to the position information of POI data; extracting name feature words from the name information of the POI data; partitioning the POI data which are in the same geographic area and have the same name feature words into the same redundant data candidate set; calculating the similarity of any two POI data in the redundant data candidate set, and if the similarity meets a preset requirement, judging that the two POI data are redundant data of each other. According to the technical scheme of the invention, the geographical area with high granularity is partitioned roughly on the aspect of space independent of accurate longitude and latitude information, and redundancy detection is performed in combination with other information of the POI data. According to the entire scheme, the calculation complexity can be well controlled, and the method and the device can be effectively applied to the application scene of large-scale POI data redundancy detection.

Description

technical field [0001] The present application relates to the technical field of geographic information, in particular to a method and device for detecting data redundancy of points of interest. Background technique [0002] Point of Interest (POI) refers to geographic object data that people are interested in, and a POI represents a location entity, such as restaurants, parks, shopping malls, and so on. POI data is an important element in geographic information systems, and it is also the content that people pay most attention to when using geographic information services. [0003] In existing geographical information-based services, POI data redundancy is a relatively common phenomenon. The so-called POI data redundancy means that in the same system, two or more POI data refer to the same location entity . This situation is generally caused by different data sources, but for computers, these redundant data will be treated as different data objects for various processing,...

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/29G06F16/9537
Inventor 张步峰
Owner ALIBABA GRP HLDG LTD
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