Absolute Frequency Value
(Redirected from absolute frequency)
Jump to navigation
Jump to search
An Absolute Frequency Value is a statistic output of a frequency function.
- AKA: Event Frequency.
- Context:
- It can be a member of a Frequency Table.
- It can range from being an Actual Frequency Value to being an Expected Frequency Value.
- It can range from being a High Frequency Value to being a Low Frequency Value.
- It can be an Experimental Frequency Value, if it is associated with a Random Experiment.
- …
- Example(s):
- 5 is the Frequency Value for Frequency Function [math]\displaystyle{ f }[/math](a, {b, [math]\displaystyle{ c }[/math], a, [math]\displaystyle{ b }[/math], a}).
- …
- Counter-Example(s):
- any Relative Frequency Value.
- any Percent Value.
- any Ratio Value.
- See: Term Frequency, Frequent Itemset.
References
2009
- http://en.wikipedia.org/wiki/Frequency_(statistics)
- In statistics the 'frequency of an event [math]\displaystyle{ i }[/math] is the number ni of times the event occurred in the experiment or the study. These frequencies are often graphically represented in histograms.
- We speak of absolute frequencies, when the counts ni themselves are given and of (relative) frequencies, when those are normalized by the total number of events:
- [math]\displaystyle{ f_i = \frac{n_i}{N} = \frac{n_i}{\sum_i n_i}. }[/math]
- Taking the fi for all [math]\displaystyle{ i }[/math] and tabulating or plotting them leads to a frequency distribution.
2008
- Dept. of Eduction, University of Irvine. (2009). “CSET Math Glossary."
- frequency. The number of items occurring in a given category.
2005
- (Lapata & Keller, 2005) ⇒ Mirella Lapata, and Frank Keller. (2005). “Web-based Models for Natural Language Processing.” In: ACM Transactions on Speech and Language Processing (TSLP), 2(1).
- Previous work demonstrated that web counts can be used to approximate bigram counts, thus suggesting that web-based frequencies should be useful for a wide variety of NLP tasks.
2004
- http://www.mathsteacher.com.au/year8/ch17_stat/03_freq/freq.htm
- The frequency of a particular data value is the number of times the data value occurs. For example, if four students have a score of 80 in mathematics, and then the score of 80 is said to have a frequency of 4. The frequency of a data value is often represented by f.
- A frequency table is constructed by arranging collected data values in ascending order of magnitude with their corresponding frequencies.
2002
- http://www.teacherlink.org/content/math/interactive/probability/glossary/glossary.html
- Empirical Frequency: The number of times an outcome has been observed to occur during repeated trials of an experiment; also called Experimental Frequency.
- Frequency: Measures how often something occurs within some given distance or time period.
- Theoretical Frequency: The number of times an outcome is expected to occur during repeated trials of an experiment based on probability principles.
2000
- Math.com. (2000). “Glossary, http://www.math.com/school/glossary/defs/frequency.html
- frequency: The number of times a particular item appears in a data set.