NC States project page -- the public page at least.

A search engine with a recommender system. Does spelling checks for a 'did you mean' type thing -- try putting in a transposed letters. Also demos recommender system based on circ data or subject analysis. They call these boost factors. Boosting is based on content ranking, circulation, holdings strength.  The project page is at http://www.cdlib.org/inside/projects/melvyl_recommender/ .

Hibernate is a powerful, high performance object/relational persistence and query service. Hibernate lets you develop persistent classes following object-oriented idiom - including association, inheritance, polymorphism, composition, and collections. Hibernate allows you to express queries in its own portable SQL extension (HQL), as well as in native SQL, or with an object-oriented Criteria and Example API.

The CDL eXtensible Text Framework (XTF) is a flexible indexing and query tool that supports searching across collections of heterogeneous data and presents results in a highly configurable manner. The highlights of the XTF system are described in an online brochure

The MetaScholar Initiative of the Robert W. Woodruff Library at Emory University encompasses more than ten digital libary projects undertaken in the past six years, and has received funding from sources that include the Andrew W. Mellon Foundation, the Institute for Museum and Library Services (IMLS), the National Science Foundation (NSF), and the Library of Congress.

The MetaScholar Initiative is currently working on seven main projects: MetaArchive, AmericanSouth, MetaCombine, Music of Social Change, OCKHAM, a Study of User Quality Metrics, and the open access journal Southern Spaces. This Initiative is creating new models for sharing and organizing meta-information, tools for the preservation of at-risk digital objects, and services for scholars in focused research areas. It is also creating new tools for such sharing, including the Metadata Migrator application and the OCKHAM digital library services.

The Metadata Migrator software package, funded by the Institute of Museum and Library Services, allows institutions such as museums, archives, research centers, and small libraries to make their locally stored records available for online searching using the Open Archives Initiative Protocol for Metadata Harvesting (OAI-PMH).

A full SRU implementation of a large scale catalog

CQL::Parser is a Perl module for parsing Common Query Language statements.

CQL is a formal language for representing queries to information retrieval systems such as web indexes, bibliographic catalogs and museum collection information. The design objective is that queries be human readable and writable, and that the language be intuitive while maintaining the expressiveness of more complex languages.

CQL::Parser will allow you validate statements, and parse them into a parse tree which you can then programatically walk and use. For your convenince there are methods for converting the CQL parse tree into Swish and Lucene queries as well as XCQL (an XML representation of CQL).

  use CQL::Parser;
  my $parser = CQL::Parser->new();
  my $root = $parser->parse('dc.creator="clinton"');
  my $swish = $root->toSwish();
  my $lucene = $root->toLucene();
  my $xcql = $root->toXCQL();

The Pathways project will develop broadly applicable models and protocols to support a loosely-coupled, highly distributed, interoperable scholarly communication system. A graph-based information model will provide a layer of abstraction over heterogeneous resources (data, content, and services). A service-oriented process model will enable the expression and invocation of multi-stage compositional, computational, and transformational information flows. Development of a graph-based information model will investigate the tension between simplicity and complexity inherent in constraining the model to permit normalization of heterogeneous resources, while still providing extensibility to support a broad spectrum of uses. The model will assert the abstract equivalence of content and functions to support the seamless composition of compound objects consisting of both static and dynamic resources. This provides a foundation for the development of a process model. The process model work will investigate the use of functional programming principles to enable easy composition of distributed processes, or pathways, through which scientific results flow. The functional paradigm is well suited to a distributed architecture where it will be possible to exploit the natural parallelism of networked processes. This work will also investigate the integration of authorization and obligation policies.

DiVA, the Academic Archive Online (Digitala Vetenskapliga Arkivet in Swedish) is a collaborative effort of a number of universities in Scandinavia which offers both publishing services and technical solutions for local repositories. The DiVA system, developed and maintained at the Electronic Publishing Centre at Uppsala University, Sweden, supports workflows for both electronic publishing and printing. Through DiVA, fulltext documents from the participating universities are published and archived – hence the name Academic Archive On-line. Today the archive contains mainly doctoral and undergraduate theses and research reports, but DiVA also supports the deposit of preprints and postprints of scientific articles. Monographs and chapters can also be published.