String Filtering and sorting in Arraylist

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Bids
23
Avg Bid (USD)
$164
Project Budget (USD)
$30 - $250

Project Description:
I have an android application, I get the title of products from web sites and add my arraylist. In total 890 title that I got however some of them are unrelated data, and also it takes long time ( max 5 min) to get all.

1.I have to filter the data by using filtering algorithm ( not directly use because this is my master thesis I have to add some value to the algorithm) In addition,I have thought to add a score of each of them then sort according to this value.

2.I have to decrease the time for example max 1 min.

Could you help me ? Any information is appreciated.

Additional Project Description:
06/23/2013 at 0:55 AKDT
In addition, I looked for research paper to do these (If I found it, the response time decrease to max 1 min.) and also I couldnt give the source code of my thesis. Moreover, I am a master student and also mobile&web developer.

Skills required:
Android, Mobile Phone, Scientific Research
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