Fast Infoset

What Does Fast Infoset Mean?

Fast Infoset (FI) is an international standard that details a binary-encoding information format as an Extensible Markup Language (XML) alternative. FI is engineered to support optimized serialization more efficiently than XML, which is based on text.

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FI is officially known as International Telecommunications Standard Sector (ITU-T) Rec. X.891 and International Standard for Organization/International Electrotechnical Commission (ISO/IEC) 24824-1.

Techopedia Explains Fast Infoset

According to the FI standard, a data model is specified with the following components:

  • Document information
  • Document format/type declaration items
  • Character-related information
  • Notation-related information
  • Namespace-related information
  • Element-related information
  • Attribute information items
  • Processing instruction information
  • Unexpanded entity reference information
  • Comment information
  • Unparsed entity information

FI may be viewed as an XML gzip, even in cases where FI optimizes document size and computer resource usage. Like gzip, no information is lost during XML/FI conversion.

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Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.