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Word Occurrence in News Titles - Quantitative Trading Analysis
"GetField" is a function that gets a word among a list of words given an index provided as parameter to the function.
The function is mainly used in quantitative trading to optimize News driven trading systems and it works as follows:
This example uses a custom function "ContainsWords" (News parser function).
When optimizing a trading system, the variable "i" will vary from 0 to 7 (There are eight words to analyze). Each time, the "GetField" function returns a different value to variable "a".
If i=0 then "a" will be equal to "buy"
If i=1 then "a" will be equal to "sell"
This function gets a list of words separated by semicolons and then uses the index parameter to return the appropriate word.
The last buy rule consists of analyzing each stock news data and then returning a signal if the word assigned to the variable "a" is found.
In summary, the above strategy buys a stock each time a news title contains a specific word (buy,sell,up,down...)
This is it for the basic example. More advanced quantitative research and analysis can be performed using the "GetField" and "ContainsWords" functions. For example, you can instruct your trading system to generate signals when a combination of words is found.