Multi-locator system for tracking data elements in resources

A system for tracking content represented in a resource, the system comprising:

• at least one processor;
• and
• a non-transitory computer-readable medium including one or more sequences of instructions, which, when executed by the at least one processor, causes:
• receiving, by the at least one processor, a modified version of structure data comprising a description of a resource that includes at least one element, wherein each element represents content of the resource in the structure data and wherein each element includes a portion of the structure data that defines the content;
• receiving, by the at least one processor, data specifying a target element of the structure data, the modified version of the structure data including a modified version of the target element;
• obtaining, by the at least one processor, a plurality of locators for the target element, wherein at least one of the locators of the plurality is derived as a function of a frequency that a combination of a subset of attributes and classes of the target element appears in the structure data, the at least one locator comprising the subset of the attributes and the classes, the subset uniquely identifying the target element in the structure data;
• and
• applying the plurality of locators including the at least one locator to the modified version of the structure data to extract the modified version of the target element.

A non-transitory computer-readable medium including one or more sequences of instructions, which, when executed by at least one processor, causes:

• receiving, by the at least one processor, a modified version of structure data comprising a description of a resource that includes at least one element, wherein each element represents content of the resource in the structure data and wherein each element includes a portion of the structure data that defines the content;
• receiving, by the at least one processor, data specifying a target element of the structure data, the modified version of the structure data including a modified version of the target element;
• obtaining, by the at least one processor, a plurality of locators for the target element, wherein at least one of the locators of the plurality is derived as a function of a frequency that a combination of a subset of attributes and classes of the target element appears in the structure data, the at least one locator comprising the subset of the attributes and the classes, the subset uniquely identifying the target element in the structure data;
• and
• applying the plurality of locators including the at least one locator to the modified version of the structure data to extract the modified version of the target element.