The World Wide Web has evolved in less than two decades as the major source of data and information for
all domains. Web has become today not only an accessible and searchable information source but also one of the most
important communication channels, almost a virtual society. Web mining is a challenging activity that aims to discover
new, relevant and reliable information and knowledge by investigating the web structure, its content and its usage.
Though the web mining process is similar to data mining, the techniques, algorithms and methodologies used to mine
the web encompass those specific to data mining, mainly because the web has a great amount of unstructured data and
the changes are frequent and rapid. This paper is structured into two sections. The first one briefly discusses the
different web mining tasks and the second one is focusing on advanced artificial intelligence (AI) methods for
information retrieval and web search, link analysis, opinion mining and web usage mining.,The World Wide Web has evolved in less than two decades as the major source of data and information for
all domains. Web has become today not only an accessible and searchable information source but also one of the most
important communication channels, almost a virtual society. Web mining is a challenging activity that aims to discover
new, relevant and reliable information and knowledge by investigating the web structure, its content and its usage.
Though the web mining process is similar to data mining, the techniques, algorithms and methodologies used to mine
the web encompass those specific to data mining, mainly because the web has a great amount of unstructured data and
the changes are frequent and rapid. This paper is structured into two sections. The first one briefly discusses the
different web mining tasks and the second one is focusing on advanced artificial intelligence (AI) methods for
information retrieval and web search, link analysis, opinion mining and web usage mining.