This paper proposes a new method to construct distributed retrieval system for remote sensing images using OGC WPS specification.

Distributed search based on Web services;

This paper put forward the Distributed Search Service which can integrate different types of digital resources with XML data structure by researching and analysising on various types of digital resources.

The cluster-based language model for resource selection in distributed information retrieval firstly uses the relevance model to get the probabilities of relevance between documents in the collection and a given query,and then the whole collection is clustered into several clusters,each of which is used to construct precisely language model.

Prediction method for distribution area and thickness of hydrocarbon source rocks——taking Xujiaweizi Depression in Songliao Basin as an example;