Now showing items 1-8 of 8

    • Advanced Feedback Methods in Information Retrieval 

      Salton, Gerard; Fox, Edward A.; Voorhees, Ellen M. (Cornell University, 1983-08)
      Automatic feedback methods may be used in on-line information retrieval to generate improved query statements based on information contained in previously retrieved documents. In this study automatic relevance feedback ...
    • Automatic Assignment of Soft Boolean Operators 

      Salton, Gerard; Voorhees, Ellen M. (Cornell University, 1984-05)
      The conventional bibliographic retrieval systems are based on Boolean query formulations and inverted file implementations. Such systems provide rapid responses in answer to search queries but they are not easy to use ...
    • Boolean Query Formulation with Relevance Feedback 

      Salton, Gerard; Fox, Edward A.; Buckley, Chris; Voorhees, Ellen M. (Cornell University, 1983-01)
      The well-known relevance feedback process uses information extracted from previously retrieved relevant documents to generate improved search formulations for subsequent search iterations. Methods are outlined in this ...
    • The Cluster Hypothesis Revisited 

      Voorhees, Ellen M. (Cornell University, 1985-01)
      A new means of evaluating the cluster hypothesis is introduced and the results of such an evaluation are presented for four collections. The results of retrieval experiments comparing a sequential search, a cluster-based ...
    • A Comparison of Two Methods for Boolean Query Relevance Feedback 

      Salton, Gerard; Fox, Edward A.; Voorhees, Ellen M. (Cornell University, 1983-07)
      The relevance feedback process uses information derived from an initially retrieved set of documents to improve subsequent search formulations and retrieval output. In a Boolean query environment this implies that new ...
    • The Effectiveness and Efficiency of Agglomerative Hierarchic Clustering in Document Retrieval 

      Voorhees, Ellen M. (Cornell University, 1985-10)
      ABSTRACT NOT SUPPLIED
    • The Efficiency of Inverted Index and Cluster Searches 

      Voorhees, Ellen M. (Cornell University, 1986-05)
      The processing time and disk space requirements of an inverted index and top-down cluster search are compared. The cluster search is shown to use both more time and more disk space, mostly due to the large number of ...
    • Implementing Agglomerative Hierarchic Clustering Algorithms for Use in Document Retrieval 

      Voorhees, Ellen M. (Cornell University, 1986-07)
      Searching hierarchically clustered document collections can be effective, but creating the cluster hierarchies is expensive since there are both many documents and many terms. However, the information in the document-term ...