Inverse Document Frequency (IDF): Inverse Document Frequency is a term used to help determine the position of a term in a vector space model. IDF = log ( total documents in database / documents containing the term )

 

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Inverse Document Frequency (IDF): Inverse Document Frequency is a term used to help determine the position of a term in a vector space model. IDF = log ( total documents in database / documents containing the term )

Portable Document Format (PDF): A technology developed by Adobe and was designed to capture all of the elements of a printed document and place it in a singe image file. This PDF file can be navigated, printed or attached . . . View Full Definition

Low Frequency: Refers to radio frequencies within the 30-300 khz band. In audio it usually refers to frequencies in the 20-160 Hz band.

Pulse Repetition Frequency (PRF): The number of radar pulses transmitted each second. The pulse transmission rate is automatically lengthened for longer ranges.

Loan Documents: Documents prepared by a lender in conjunction with granting the loan to the borrower, may include a promissory note, deed of trust, and required loan disclosure documents.

Radio Frequency (Rf): An alternating current or voltage with a frequency (or carrier wave) above about 100khz. It's called radio frequency because these frequencies have a capacity to be radiated as electromagnet . . . View Full Definition

Radio Frequency Identification (RFID): RFID first appeared in tracking and access applications during the 1980s. It is a method of remotely storing and retrieving data using devices called RFID tags/transponders and is coming int . . . View Full Definition

Inverse Square Law: In mathematics, the law that states that in the absence of reflective surfaces, sound pressure (or light) falls off at a rate inverse to the square of the distance from its source. In other . . . View Full Definition

Inverse Condemnation: A property owner forcing a government to take a property by eminent domain when that governments actions resulted in the owners inability to use the property.

Inverse Barometer Effect: The inverse response of sea level to changes in atmospheric pressure. A static reduction of 1.005 mb in atmospheric pressure will cause a stationary rise of 1 cm in sea level.