how to run simbase?

[zloi47]

I installed simbase (not sure if correctly, but there were not errrors). I have ssh connection to the server where I installed simbase, so I can work directly on server machine. But I have no access to root, only can sudo. When I do bin/start or sudo bin/start, it writes command not found. Any ideas?

[mountain]

please check the dir bin in the project dir.

https://github.com/guokr/simbase/tree/master/bin

[zloi47]

I used java -server -jar command directly in terminal without start file and then connected via redis-cli. Is there any way of importing data from .txt files? Also if I add more then 5 values in vectors (vadd) and then "vget" it will promt "(error) Unknown server error!". Is there a limit set to 5?

[mountain]

You should setup the schemas first just like any RDBMS such as mysql. Had you follow the steps described in https://github.com/guokr/simbase#a-general-application-case ?

Could you elaborate your setup scripts and your vget command in detail?

About the importing, currently we do not have such tool, but it is very easy to write a scripts.

[zloi47]

Is basis a relation and article an attribute? What I want to do is to import bag of words (4623 rows of bag of words, each with 10,000 vectors) and than compare for similarity. I do not see any examples of scripts in documentation. Any hints would be good.

[mountain]

By concepts, basis is something like tablespace which is a container hold all the data, while vector set is something like a table, and recommendation is a relationship between two vector set.

I am not sure about your cases since I did not see the detail.

[zloi47]

I create bag of words representation out of vocabulary with python. I export them to text file. The file looks like(for 10 most common words, 1 vector for each most common word):

1 {0, 0, 0, 0, 1, 1, 0, 0, 1, 0}
2 {1, 1, 0, 0, 1, 1, 1, 1, 1, 1}
3 {0, 1, 1, 0, 1, 0, 0, 0, 1, 1}
4 {1, 1, 0, 1, 1, 0, 1, 0, 1, 1}
5 {1, 0, 0, 0, 1, 1, 0, 0, 1, 0}

Then I import Vectors (without 1,2,3,4,5, they are just sentenceids) to postgres. In postgres I use query to compare two bag of word vectors for the similiraty:

select a.doc, a.sentenceid, b.doc, b.sentenceid, cardinality(array(select unnest(array_positions(a.tokenizedsentence, '1')) intersect select unnest(array_positions(b.tokenizedsentence, '1'))))::float / cardinality(a.tokenizedsentence)::float from nlpdata a, nlpdata b where a.sentenceid < b.sentenceid;

There are 4623 sentences, so 4623 rows. Total number of comparisons is 10,683,753. For 10 most common words time of execution is about 20 minutes. My goal is to compare bag of words which consists of 10,000 most common words, so 10,000 vectors. To consider how much time it takes for 10 vectors, in case of 10,000 vectors it will take about 24 hours. As Simbase works on vectors, I thought it can do these calculations faster.
Also I have another form of representation, which looks like(Embedding Vectors created by Glove):

1 -0.00205523529412 0.00168023529412 -0.00357188235294 -0.000664294117647
2 -0.00120581818182 -0.00318495454545 -5.30909090909e-05 9.39090909091e-05
3 -0.000793523809524 0.000649047619048 0.000342761904762 -0.00143176190476

For second case I wanted cosine distance, but postgres does not have any functions. Maybe Simbase can do something with it?

[mountain]

For 10 common words example, try some scripts like below steps in redis-cli:

Setup:

bmk commonword w1 w2 w3 w4 w5 w6 w7 w8 w9 w10
vmk commonword sentence 
rmk sentence sentence cosinesq

Fill data:

vadd sentence 1 0 0 0 0 1 1 0 0 1 0
vadd sentence 2 1 1 0 0 1 1 1 1 1 1
vadd sentence 3 0 1 1 0 1 0 0 0 1 1
vadd sentence 4 1 1 0 1 1 0 1 0 1 1
vadd sentence 5 1 0 0 0 1 1 0 0 1 0 

Query

rrec sentence 1 sentence
rrec sentence 2 sentence

[zloi47]

Thanks. But is there any way to import vectors with script? Writing manually is impossible.

[mountain]

For the Glove data, it is very neat to add a head for each row:

1 -0.00205523529412 0.00168023529412 -0.00357188235294 -0.000664294117647 

=>

redis-cli -h 127.0.0.1 -p 7654 vadd sentence 1 -0.00205523529412 0.00168023529412 -0.00357188235294 -0.000664294117647 

save it as a shell scripts, then execute the shell.

For your text file, there are two ways:

1. modify your original python scripts with redis python binding
2. change your text file into a shell like the Glove example.

[zloi47]

Thanks, importing should suit my case. And what about comparing every sentence with each other?

rrec sentence 1 sentence

compares to other sentences or to itself? Also:

`127.0.0.1:7654> rrec sentence 1 sentence

1. "5"
2. "3"
3. "4"

`
Can you explain what are these numbers and comparison is done?

[mountain]

> rrec sentence 1 sentence
1) "5"
2) "3"
3) "4"

the result is the id list of nearest sentences ordered by distance.

I am not sure whether you had read our documents or not, please read them before some basic questions. Thank you.