Towards Automatic Acquisition of Patterns for Information Extraction

One of the hardest obstacles in developing Information Extraction (IE) systems is theportability of the systems. Many IE systems use a pattern-matching approach, but thepatterns have to be created for each target task or target domain. In order to improveIE systems and make them portable to various domains, we should have a mechanismto create pattern easily. We will propose a method to acquire such patterns almostautomatically from a large untagged corpus. First, the system collects...