System Summary and Timing
  Organization Name: University of Neuchatel (Switzerland)
  List of Run ID's: UniNE3, UniNE4

  Construction of Indices, Knowledge Bases, and other Data Structures 

    Methods Used to build Data Structures 

    - Length (in words) of the stopword list:  571  (SMART) 
    - Stemming Algorithm:   yes  Lovins (SMART)            
    - Term Weighting:  yes 
    -  Phrase Discovery? :              
    -  Tokenizer? :              

    Statistics on Data Structures built from TREC Text

    - Inverted index           
      - Run ID :  UniNE3, UniNE4 
      - Total Storage (in MB):  179 UniNE3,  710 UniNE4
      - Total Computer Time to Build (in hours): 2.6 UniNE3,  10 UniNE4
      - Automatic Process? (If not, number of manual hours):  yes 
      - Only Single Terms Used? :  yes
    - Clusters           
    - N-grams, Suffix arrays, Signature Files           
    - Knowledge Bases            
      - Use of Manual Labor                  
    - Special Routing Structures           
    - Other Data Structures built from TREC text           

  Query construction

    Automatically Built Queries (Ad-Hoc)

    - Topic Fields Used:  desc
    - Average Computer Time to Build Query (in cpu seconds):  0.3 
    - Method used in Query Construction          
      - Term Weighting (weights based on terms in topics)? :  yes 
      - Tokenizer? :                 
      - Expansion of Queries using Previously-Constructed Data Structure? :              


  Searching

    Search Times

      - Run ID :  UniNE3, UniNE4 
      - Computer Time to Search (Average per Query, in CPU seconds):  15.5 

    Machine Searching Methods

      - Vector Space Model? :  yes 
      - Probabilistic Model? :  yes 

    Factors in Ranking

      - Term Frequency? :  yes 
      - Inverse Document Frequency? :  yes 


      - Other Term Weights? :  normalization of seach term weights done by SMART
      - Document Length? :  yes 


    Machine Information

    - Machine Type for TREC Experiment:  SUN SPARCstation 10 model 51
    - Was the Machine Dedicated or Shared:  shared
    - Amount of Hard Disk Storage (in MB):  6,144 MB
    - Amount of RAM (in MB):  128 MB
    - Clock Rate of CPU (in MHz):  50 MHz

    System Comparisons 

    - Amount of "Software Engineering" which went into the Development of 
      the System:  4 months to understand SMART, 6 months to write our 
      additional features in Smalltalk-80
    - Given appropriate resources            
      - Could your system run faster? :  yes, because Smalltalk is interpreted
      - By how much (estimate)? :  the improvement factor is unknown