A system includes a multi-port random-access memory (RAM) configured to store an instruction table. The instruction table specifies a regular expression for application to a data stream. The system includes a regular expression engine configured to process the data stream based on the instruction table. The regular expression engine includes a decoder circuit configured to determine validity of active states output from the RAM, a plurality of active states memories operating concurrently, wherein each active states memory is configured to initiate a read from a different port of the RAM using an address formed of an active state output from the active states memory and a portion of the data stream, and switching circuitry configured to route the active states to the plurality of active states memories according, at least in part, to a load balancing technique and validity of the active states.

Provided is a method of indexing in a network key value indexing system. The method includes retrieving a first key name from a storage device of the network key value indexing system, the first key name identifying a first prefix, a first bucket, and a first key, the first prefix indicating the first bucket, parsing the first key name into the first prefix, the first bucket, and the first key, determining the first prefix, the first bucket, and the first key based on a first delimiter, and generating a hash table in a memory cache of the network key value indexing system to associate the first prefix with the first key.

Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Disclosed are methods and systems, among which is a system that includes a pattern-recognition processor, a central processing unit (CPU) coupled to the pattern-recognition processor via a pattern-recognition bus, and memory coupled to the CPU via a memory bus. In some embodiments, the pattern-recognition bus and the memory bus form about the same number of connections to the pattern-recognition processor and the memory, respectively.

Disclosed are methods and systems, among which is a system that includes a pattern-recognition processor, a central processing unit (CPU) coupled to the pattern-recognition processor via a pattern-recognition bus, and memory coupled to the CPU via a memory bus. In some embodiments, the pattern-recognition bus and the memory bus form about the same number of connections to the pattern-recognition processor and the memory, respectively.

Methods, systems, and apparatus for resource locator remarketing are presented. In one aspect, a method includes receiving visitation data from a publisher, the visitation data specifying a device identifier and a resource locator specifying a resource that was provided to a user device; identifying a content feed that includes regular expressions, each regular expression specifying matching character strings and a set of content items that are eligible to be provided to user devices corresponding to visitation data including a resource locator matching one of the regular expressions; identifying, a first matching regular expression that matches the resource locator specified by the visitation data; selecting a content item from the content items that correspond to the first matching regular expression; and providing data that causes presentation of the selected content item to the user device.

Provided is a method of indexing in a network key value indexing system. The method includes retrieving a first key name from a storage device of the network key value indexing system, the first key name identifying a first prefix, a first bucket, and a first key, the first prefix indicating the first bucket, parsing the first key name into the first prefix, the first bucket, and the first key, determining the first prefix, the first bucket, and the first key based on a first delimiter, and generating a hash table in a memory cache of the network key value indexing system to associate the first prefix with the first key.

A determination device 1 includes: a history storage unit 101 configured to accumulate and store use history information in which application identification information, position information indicating a position of a user, and user identification information are correlated with each other; a use region UU number totaling unit 105 configured to total a UU number for each of a plurality of regions on the basis of the use history information for a specific application; a use region number totaling unit 106 configured to total the number of regions on the basis of the use history information for the specific application; a score calculating unit 107 configured to calculate a regionality score for each of the plurality of regions on the basis of the UU number and the number of regions for the specific application; and a determination unit 108 configured to determine whether there is regionality for the specific application on the basis of the regionality score.

This disclosure relates generally to a tool, system, and method for searching input data. The system may include a pattern input module, configured to receive regular expression patterns of symbols. An interpreter module may be configured to access individual ones of the symbols of the input data and upon accessing each symbol and compare a thread against the symbol. For each pattern, the thread corresponding to the pattern is compared against the symbol prior to the at least one thread being compared against a subsequent symbol of the input data. An output module may be configured to output an indication of ones of the patterns determined to be contained within the input data based on the comparison of the corresponding at least one thread to the symbols of the input data.

A substring can be detected within a string of data elements through a method that includes partitioning and distributing the string of data elements to an ordered list of segments having equal lengths greater than or equal to the length of the substring. A substring match within a segment of the ordered list of segments can be detected by sequentially comparing the substring with each segment of the ordered list of segments. A carry vector that includes the substring match can be created, in response to detecting the substring match that is a partial match. It can be determined that a carry vector exists by comparing the substring with the segment of the ordered list of segments, and it can be subsequently determined that a full match exists between the carry vector and the segment of the ordered list of segments.