A Survey on Event Detection Models for Text Data Streams

Abstract

Event Detection (ED) is a study area that attracts the attention of decision-makers from various disciplines in order to help them in taking the right decision. ED has been examined on various text streams like Twitter, Facebook, Emails, Blogs, Web Forums and newswires. Many ED models have been proposed in literature. In general, ED model consists of six main phases: Data collection, pre-processing, feature selection, event detection, performance evaluation and result representation. Among these phases, event detection phase has a vital rule in the performance of the ED model. Consequently, numerous supervised, unsupervised, semi-supervised detection methods have been introduced for this phase. However, unsupervised methods have been extensively utilized as ED process is considered as unsupervised task. Hence, such methods need to be categorized on such a way so it can help researchers to understand and identified the limitations lay in these methods. In this survey, ED models for text data from various Social Network sites (SNs) are analyzed based on domain type, detection methods, type of detection task. In addition, main categories for unsupervised detection methods are explicitly mentioned with revising their related works. Moreover, the major open challenges faced by researchers for building ED models are explained and discussed in detail. The main objective of this survey paper is to provide a complete view of the recent developments in ED field. Hence, help scholars to identify the limitations of existing ED models for text data and help them to recognize the interesting future works directions.

A Survey on Event Tracking in Social Media Data Streams

“…ED serves as the foundation for event extraction in online social networks, whereby facilitating the extraction and classification of events from text. The results obtained from ED directly impact the efficiency of event element extraction [40] . Figure 1 provides an overview of the ED process and its associated phases [41] .…”

“…He and Duan [40] News article Joint annotation model based on CRF multi-task learning Multimodality data…”

An Intuitionistic Calculus to Complex Abnormal Event Recognition on Data Streams

“…Al-Dyani et al [1] investigated on event detection models using text data from a variety of social media platforms.…”

“…A data stream is an ordered sequence of data, which is obtained with some temporal behavior [1]. Unlike data received from static databases, data streams are continuous and unlimited, are usually received at high speeds, and are characterized by a time-varying distribution of data.…”

“…Detection of events on sensor flows aims to determine the values (t), which are abrupt changes within a framework vector flow. Each frame vector is converted to a binary vector of the same length, with each value representing a possible change in the corresponding sensor flow [1,2,9]. Such deviations from normal behavior are called events and binary vectors are called event vectors.…”