Thank you very much Marvin,
When I type hell, I would like to get tokens starting with hell, e.g.
{"hell","hello","helix"}. I do not want to get documents which contain hell
token in the title. So it seems like it should be working on the tokens.
What I need is basically to be able to iterate over all tokens which are
lexicographically ordered. Also I would need to sort them based on their
frequencies when returning the results. I guess Lexicon class,
https://lucy.apache.org/docs/c/Lucy/Index/Lexicon.html, is designed for
this. Can you please confirm? I hope the returned results in the
lucy_Lex_seek contains the frequency of the terms as well.
Thanks again,
Serkan
On Tue, May 2, 2017 at 4:22 PM, Marvin Humphrey <[email protected]>
wrote:
> On Mon, May 1, 2017 at 3:55 PM, Serkan Mulayim <[email protected]>
> wrote:
>
> > I am using the C library. I would like to get the suggester or
> autocomplete
> > functionality in my library. It needs to return {"hello", "hell",
> "hellx"}
> > when your query is "hell". I feel like I need to be able to read all the
> > tokens in the whole index, and return the results based on it. I looked
> at
> > the indexReader for this, but I could not find any useful information. Do
> > you think this is possible?
>
> Autosuggestion functionality will need tuning, just like search results.
> In
> fact, autosuggestion is really a specialized form of search application.
> It
> could be implemented with a separate index or separate fields.
>
> Say that we only wanted to offer suggestions derived from the `title`
> field.
> Split each title into an array of words. Then for each word, index
> starting
> at some letter, say the third. For the title `hello world`, you'd get the
> following tokens:
>
> hello -> hel hell hello
> world -> wor worl world
>
> Then at search time, perform a search query with every keystroke.
>
> h -> (no result)
> he -> (no result)
> hel -> "hello world"
>
> Once you've got basic functionality running, experiment with minimum token
> length, adding Soundex/Metaphone, performing character normalization, etc.
>
> Marvin Humphrey
>
