Awesome

Introduction

This demo application allows you to query ~130K articles from the Stack Exchange / Stack overflow Data dump using an Erlang implementation of the WAND / max_score evaluation stategy for Top-K Queries as outlined in this paper. It was fun to translate this Java DAAT implementation to a relative speedy Erlang implementation with immutable data structures.

Try it out the demo here. It's hosted on a 1GB Single Core server from Digital Ocean.

Demo Quickstart

Git clone the repository git@github.com:wardbekker/search.git
Gunzip the existing data files: gunzip Posts.xml.gz, gunzip db_data\document_field_value.DCD.gz and gunzip db_data\postings.DCD.gz
Start application (and dev shell) with ./shell
Browse to http://localhost:8080/ and try out a query. For example: erlang actor.

Relevant links

Demo Code Licence

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.