INTEGRATING DATA INDEX ENGINES IN ORDER TO BUILD INFORMATION RETRIEVAL SYSTEMS IN HETEROGENEOUS ENVIRONMENTS

Adaptive Dynamic Data Placement Algorithm for Hadoop in Heterogeneous Environments

Hadoop MapReduce framework is an important distributed processing model for large-scale data intensive applications. The current Hadoop and the existing Hadoop distributed file system’s rack-aware data placement strategy in MapReduce in the homogeneous Hadoop cluster assume that each node in a cluster has the same computing capacity and a same workload is assigned to each node. Default Hadoop d...

The Light-Weight Semantic Web: Integrating Information Extraction and Information Retrieval for Heterogeneous Environments

Today’s Web, large intranets and even the documents collected by a single user are enormous sources of distributed, heterogeneous information that cannot be easily mastered. Syntactical and semantical differences as well as missing semantic annotations make effective query evaluation on such corpora a hard task. The Semantic Web aims at providing a standard for semantic annotations, but has not...

Semantic information retrieval from heterogeneous environments

While most enterprise data is unstructured and file based, the need for access to structured data is increasing. In order to reduce the cost for finding information and achieve relevant results there is a need to build a very complex query which indeed is a serious challenge. Data volumes are growing at 60% annually and up to 80% of this data in any organization can be unstructured. In this pap...

Integrating Heterogeneous Data Sources in Flexible and Dynamic Environments

Flexible and dynamic environments are characterized by high independence from connection participants, low control over available services and high tolerance to communication failures. Integrating data sources published on such environments requires an integration strategy that guarantees local data sources autonomy. Multidatabase System (MDBS) has been consolidated as an approach to integrate ...

Search Engines - Information Retrieval in Practice