tokenize

I'm trying to implement autocomplete using Elasticsearch thinking that I understand how to do it... I'm trying to build multi-word (phrase) suggestions by using ES's edge_n_grams while indexing crawled data. What is the difference between a tokenizer and a token_filter - I've read the docs on these but still need more understanding on them.... For instance is a token_filter what ES uses to search against user input? Is a tokenizer what ES uses to make tokens? What is a token? Is it possible for ES to create multi-word suggestions using any of these things? A tokenizer will split the whole

I have a problem in text matching when I tokenize text that splits specific words, dates and numbers. How can I prevent some phrases like "run in my family" ,"30 minute walk" or "4x a day" from splitting at the time of tokenizing words in NLTK? They should not result in: ['runs','in','my','family','4x','a','day'] For example: Yes 20-30 minutes a day on my bike, it works great!! gives: ['yes','20-30','minutes','a','day','on','my','bike',',','it','works','great'] I want '20-30 minutes' to be treated as a single word. How can I get this behavior>? You will be hard pressed to preserve n-grams of

I am new to Solr.I want to know when to use StandardTokenizerFactory and KeywordTokenizerFactory ? I read the docs on Apache Wiki, but I am not getting it. Can anybody explain the difference between StandardTokenizerFactory and KeywordTokenizerFactory ? Jayendra StandardTokenizerFactory :- It tokenizes on whitespace, as well as strips characters Documentation :- Splits words at punctuation characters, removing punctuations. However, a dot that's not followed by whitespace is considered part of a token. Splits words at hyphens, unless there's a number in the token. In that case, the whole token

I ran into a problem with SQL Server Integration Services 2012's new string function in the Expression Editor called TOKEN(). This is supposed to help you parse a delimited record. If the record comes out of a flat file, you can do this with the Flat File Source. In this case, I am dealing with old delimited import records that were stored as strings in a database VARCHAR field. Now they need to be extracted, massaged, and re-exported as delimited strings. For example: 1^Apple^0001^01/01/2010^Anteater^A1 2^Banana^0002^03/15/2010^Bear^B2 3^Cranberry^0003^4/15/2010^Crow^C3 If these strings are

I use java.util.StringTokenizer for simple parsing of delimited strings in java. I have a need for the same type of mechanism in pl/sql. I could write it, but if it already exists, I would prefer to use that. Anyone know of a pl/sql implementation? Some useful alternative? PL/SQL does include a basic one for comma separated lists ( DBMS_UTILITY.COMMA_TO_TABLE ). Example: DECLARE lv_tab_length BINARY_INTEGER; lt_array DBMS_UTILITY.lname_array; BEGIN DBMS_UTILITY.COMMA_TO_TABLE( list => 'one,two,three,four' , tablen => lv_tab_length , tab => lt_array ); DBMS_OUTPUT.PUT_LINE( 'lv_tab_length = ['|