MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS
Time period: 04/20/02 through 04/26/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 21 49 70
Davis 7 0 7
Irvine 8 0 8
Los Angeles 0 7 7
Riverside 0 4 4
San Diego 1 4 5
San Francisco 0 0 0
Santa Barbara 0 1 1
Santa Cruz 0 0 0
Other - UC 0 3 3
Other-Network UC n/a 12 12
_______ ______ _____
37 80 117
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2 1 53
2-4 a.m. 1 23 180
4-6 a.m. 1 3 0
6-8 a.m. 0 0 0
8-10 a.m. 8 12 239
10-12 a.m. 34 87 482
12-2 p.m. 20 64 550
2-4 p.m. 21 51 658
4-6 p.m. 13 11 44
6-8 p.m. 6 8 122
8-10 p.m. 6 49 196
10-12 p.m. 5 10 5
__________ __________ __________ _________________
Total: 117 319 2,529
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 79 136 215
Davis 13 0 13
Irvine 12 0 12
Los Angeles 0 7 7
Riverside 0 7 7
San Diego 0 6 6
San Francisco 0 0 0
Santa Barbara 0 1 1
Santa Cruz 0 0 0
Other - UC 0 5 5
Other-Network UC n/a 53 53
_______ ______ _____
104 215 319
Number of FIND commands by database
WorldCat 0
Art Index 19
ArticleFirst 0
ContentsFirst 0
ERIC 0
GPO 0
PapersFirst Index 0
ProceedingsFirst Index 0
SocAbstracts 0
PAIS International 0
MLA Bibliography 300
RILM Index 0
Total number of FIND commands 319
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 426 1,354 1,780
Davis 77 0 77
Irvine 43 0 43
Los Angeles 0 63 63
Riverside 0 122 122
San Diego 0 51 51
San Francisco 0 0 0
Santa Barbara 0 2 2
Santa Cruz 0 0 0
Other - UC 0 5 5
Other-Network UC n/a 386 386
_______ ______ _____
546 1,983 2,529
Number of Records Displayed by database
WorldCat 0
Art Index 45
ArticleFirst 0
ContentsFirst 0
ERIC 0
GPO 0
PapersFirst Index 0
ProceedingsFirst Index 0
SocAbstracts 0
PAIS International 0
MLA Bibliography 2,484
RILM Index 0
Total number of Records Displayed 2,529
1.4 Relative Use of Databases
______________________________
Relative use of OCLC-Z39.50 databases: Sessions Percentage
WorldCat 0 0.0%
Art Index 14 12.0%
ArticleFirst 0 0.0%
ContentsFirst 0 0.0%
ERIC 0 0.0%
GPO 0 0.0%
PapersFirst Index 0 0.0%
ProceedingsFirst Index 0 0.0%
SocAbstracts 0 0.0%
PAIS International 0 0.0%
MLA Bibliography 103 88.0%
RILM Index 0 0.0%
Percent of searches done in the WCAT database 0.0%
Percent of searches done in the ART database 6.0%
Percent of searches done in the JRNL database 0.0%
Percent of searches done in the JRNLT database 0.0%
Percent of searches done in the EDUC database 0.0%
Percent of searches done in the GDOC database 0.0%
Percent of searches done in the PAPR database 0.0%
Percent of searches done in the PROC database 0.0%
Percent of searches done in the SOC database 0.0%
Percent of searches done in the PAIS database 0.0%
Percent of searches done in the MLA database 94.0%
Percent of searches done in the RILM database 0.0%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 2.8
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.7
Standard deviation in seconds 1.6
2.1 Art Index Database Statistics
__________________________________
Median session length (minutes:seconds) 2:25
Average session length (minutes:seconds) 7:57
Longest session recorded (minutes:seconds) 27:45
Average number of searches completed per session 1.4
Retrievals per search - median 4.0
Retrievals per search - average 97.1
Retrievals per search - standard deviation 195.8
Percent of searches completed with 0 results 47.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 19 24.4%
DISPLAY (excluding automatic displays) 12 15.4%
HELP 11 14.1%
EXPLAIN 8 10.3%
SET/RESET 4 5.1%
SHOW 2 2.6%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 20 25.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 2 2.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 92.3%
LONG 7.7%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
Art Index Database Statistics continued:
________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CORPORATE 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 8 42.1% 3 37.5% 85 115.6 68.4
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
PLACE OF PUBL. 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 11 57.9% 6 54.5% 6 253.2 340.3
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 0 0.0% 0 0.0% 0 0.0 0.0
Single 19 100% 9 47.4% 85 184.4 242.5
2.2 MLA Bibliography Database Statistics
_________________________________________
Median session length (minutes:seconds) 9:22
Average session length (minutes:seconds) 9:33
Longest session recorded (minutes:seconds) 47:05
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 167.5
Retrievals per search - standard deviation 865.3
Percent of searches completed with 0 results 27.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 294 39.4%
DISPLAY (excluding automatic displays) 196 26.2%
HELP 20 2.7%
EXPLAIN 16 2.1%
SET/RESET 36 4.8%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 6 0.8%
LOGON or LOGOFF 138 18.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 41 5.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.4%
SHORT 84.1%
LONG 7.1%
TAGS 1.7%
FIELDS 0.4%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.3%
MLA Bibliography Database Statistics continued:
_______________________________________________
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
SUBJECT 68 22.7% 18 26.5% 49 747.9 1974.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 83 27.8% 29 34.9% 7 137.9 431.8
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
EXACT SERIES 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 27 9.0% 7 25.9% 14 78.0 168.8
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
ISSN/ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 0 0.0% 0 0.0% 0 0.0 0.0
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 121 40.5% 32 26.4% 17 31.5 55.8
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 6 2.0% 6 100% 0 0.0 0.0
Single 287 97.9% 74 25.8% 17 231.0 1017.8
3.0 Error, EXPLAIN and HELP statistics (All OCLC-Z39.50 databases)
___________________________________________________________________
Percent of commands that contained errors 12.0%
Ten most frequent errors:
1. First word of command is invalid 37.5%
2. NS command - no next screen 27.7%
3. FIND command with invalid index name 9.8%
4. Valid command at an inappropriate time 8.0%
5. Invalid SET DATABASE command issued 2.7%
6. 956 2.7%
7. DISPLAY command contains invalid word 1.8%
8. Index invalid in current database 1.8%
9. PS command - no previous screen 0.9%
10. No previous search for BACKUP 0.9%
11. All others 6.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 33.3%
2. GUIDE (ART DB) 20.8%
3. GUIDE: Z39.50 non-A&I DBS w/o truncation 20.8%
4. G395 4.2%
5. INDEXES (MLA DB) 4.2%
6. LOCATE (Z39.50 DBS) 4.2%
7. FIND LOCATION (Z39.50 DBS) 4.2%
8. Unrecognized term 4.2%
9. CATALOG 4.2%
11. All others 0.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 36.4%
2. First word of command is invalid 21.8%
3. Valid command at an inappropriate time 9.1%
4. DISPLAY command-first of >1 screen 9.1%
5. DISPLAY command - middle of >1 screen 7.3%
6. FIND command with invalid index name 5.5%
7. 15 3.6%
8. FIND command retrieves 1 book 3.6%
9. MELVYL system could not process command 1.8%
10. 1275 1.8%
11. All others 0.0%
Ten most frequent SHOW requests:
1. GLOSSARY 50.0%
2. HISTORY 50.0%
11. All others 0.0%
OCLmm/dd oclc MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS (weekly)