Smart Crawling: A New Approach toward Focus Crawling from Twitter
This work addresses the challenge of focused crawling from Twitter for researchers or analysts needing topic-specific data, but it is incremental as it builds on existing crawling methods with specific adaptations for Twitter.
The paper tackles the problem of retrieving relevant tweets for a specific topic from Twitter's limited API by introducing the SmartTwitter Crawling (STiC) algorithm, which enriches initial keyword queries and uses a scoring mechanism to select relevant tweets, resulting in increased precision compared to a simple BFS search.
Twitter is a social network that offers a rich and interesting source of information challenging to retrieve and analyze. Twitter data can be accessed using a REST API. The available operations allow retrieving tweets on the basis of a set of keywords but with limitations such as the number of calls per minute and the size of results. Besides, there is no control on retrieved results and finding tweets which are relevant to a specific topic is a big issue. Given these limitations, it is important that the query keywords cover unambiguously the topic of interest in order to both reach the relevant answers and decrease the number of API calls. In this paper, we introduce a new crawling algorithm called "SmartTwitter Crawling" (STiC) that retrieves a set of tweets related to a target topic. In this algorithm, we take an initial keyword query and enrich it using a set of additional keywords that come from different data sources. STiC algorithm relies on a DFS search in Twittergraph where each reached tweet is considered if it is relevant with the query keywords using a scoring, updated throughout the whole crawling process. This scoring takes into account the tweet text, hashtags and the users who have posted the tweet, replied to the tweet, been mentioned in the tweet or retweeted the tweet. Given this score, STiC is able to select relevant tweets in each iteration and continue by adding the related valuable tweets. Several experiments have been achieved for different kinds of queries, the results showedthat the precision increases compared to a simple BFS search.