The Helios RegEx processor is proficient in analysing data at full network throughput rates reaching 100 Gb/s in FPGA technology and can scan up to 1 million complex
regular expressions in parallel.
On the other hand, the use of
regular expressions is more flexible in terms of keeping the rules up to date, as part of a software, application can often change, including networking related communication.
For instance, there is a
regular expression set called R; another set R' is constructed so that any unmatched item of R' is also an unmatched item of R.
It is well known that
regular expressions are exactly as powerful as finite automata, i.e., for every
regular expression one can construct an equivalent (deterministic) finite automaton and vice versa, see [22].
A firing rule r = E/[s.sup.b] [right arrow] s; d is applicable in a neuron [sigma]i if there are j [greater than or equal to] b spikes in [sigma]i and [s.sup.j] [memebr of] L(E) where L(E) is the set of words defined by the
regular expression E.
The rest of the paper is organized as follows: in Section "
Regular expression search engine", the main approaches provided by Cho and Rajagopalan (2002) are described.
Allow
regular expressions. Most programming languages allow an extraordinary level of complexity in textual searches through the use of
regular expressions, as when "\d" is used to represent any digit, "[aeiou]" is used to represent any English orthographic vowel, or "\s+" is used to represent any combination of spaces, tabs, and line breaks.
It includes content filtering dictionaries specific to each regulation and enhanced
regular expression scanning for predefined patterns including credit card numbers, phone numbers and Social Security numbers.
Other QA Wizard 3.1 enhancements include an improved
regular expression builder, the ability to capture screenshots and HTML, and much more.