MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS
Time period: 02/16/02 through 02/22/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 21 28 49
Davis 12 0 12
Irvine 5 0 5
Los Angeles 0 6 6
Riverside 0 0 0
San Diego 3 2 5
San Francisco 0 0 0
Santa Barbara 1 2 3
Santa Cruz 0 1 1
Other - UC 0 0 0
Other-Network UC n/a 14 14
_______ ______ _____
42 53 95
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 1 5 2
2-4 a.m. 3 10 54
4-6 a.m. 3 18 108
6-8 a.m. 2 5 18
8-10 a.m. 6 7 22
10-12 a.m. 20 70 849
12-2 p.m. 13 29 108
2-4 p.m. 16 30 272
4-6 p.m. 13 43 188
6-8 p.m. 9 57 221
8-10 p.m. 8 18 99
10-12 p.m. 1 4 23
__________ __________ __________ _________________
Total: 95 296 1,964
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 44 110 154
Davis 47 0 47
Irvine 19 0 19
Los Angeles 0 18 18
Riverside 0 0 0
San Diego 1 7 8
San Francisco 0 0 0
Santa Barbara 2 3 5
Santa Cruz 0 2 2
Other - UC 0 0 0
Other-Network UC n/a 43 43
_______ ______ _____
113 183 296
Number of FIND commands by database
WorldCat 0
Art Index 20
ArticleFirst 0
ContentsFirst 0
ERIC 0
GPO 0
PapersFirst Index 0
ProceedingsFirst Index 0
SocAbstracts 0
PAIS International 0
MLA Bibliography 276
RILM Index 0
Total number of FIND commands 296
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 280 1,007 1,287
Davis 201 0 201
Irvine 146 0 146
Los Angeles 0 85 85
Riverside 0 0 0
San Diego 0 101 101
San Francisco 0 0 0
Santa Barbara 8 0 8
Santa Cruz 0 1 1
Other - UC 0 0 0
Other-Network UC n/a 135 135
_______ ______ _____
635 1,329 1,964
Number of Records Displayed by database
WorldCat 0
Art Index 162
ArticleFirst 0
ContentsFirst 0
ERIC 0
GPO 0
PapersFirst Index 0
ProceedingsFirst Index 0
SocAbstracts 0
PAIS International 0
MLA Bibliography 1,802
RILM Index 0
Total number of Records Displayed 1,964
1.4 Relative Use of Databases
______________________________
Relative use of OCLC-Z39.50 databases: Sessions Percentage
WorldCat 0 0.0%
Art Index 15 15.8%
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 80 84.2%
RILM Index 0 0.0%
Percent of searches done in the WCAT database 0.0%
Percent of searches done in the ART database 6.8%
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 93.2%
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 0.5
Standard deviation in seconds 1.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.6
Standard deviation in seconds 0.4
2.1 Art Index Database Statistics
__________________________________
Median session length (minutes:seconds) 1:45
Average session length (minutes:seconds) 2:26
Longest session recorded (minutes:seconds) 7:14
Average number of searches completed per session 1.3
Retrievals per search - median 1.0
Retrievals per search - average 1471.0
Retrievals per search - standard deviation 6427.0
Percent of searches completed with 0 results 40.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 20 24.4%
DISPLAY (excluding automatic displays) 15 18.3%
HELP 6 7.3%
EXPLAIN 4 4.9%
SET/RESET 4 4.9%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 25 30.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 8 9.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 70.0%
LONG 25.0%
TAGS 0.0%
FIELDS 5.0%
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 2 10.0% 0 0.0% 22 21.5 29.0
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 12 60.0% 5 41.7% 3 4193.9 10839.6
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 6 30.0% 3 50.0% 5 6.7 5.7
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 20 100% 8 40.0% 4 2451.7 8290.0
2.2 MLA Bibliography Database Statistics
_________________________________________
Median session length (minutes:seconds) 4:06
Average session length (minutes:seconds) 7:19
Longest session recorded (minutes:seconds) 30:00
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 71.6
Retrievals per search - standard deviation 421.5
Percent of searches completed with 0 results 34.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 265 43.0%
DISPLAY (excluding automatic displays) 146 23.7%
HELP 14 2.3%
EXPLAIN 12 1.9%
SET/RESET 26 4.2%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 11 1.8%
LOGON or LOGOFF 115 18.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 27 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.7%
SHORT 82.7%
LONG 6.1%
TAGS 0.5%
FIELDS 0.0%
PERIODICALS 1.0%
COMMENTS 0.0%
Other 0.0%
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 45 16.8% 19 42.2% 19 144.0 195.2
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 97 36.2% 38 39.2% 5 67.5 118.0
SERIES 1 0.4% 1 100% 0 0.0 0.0
EXACT SERIES 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 38 14.2% 15 39.5% 15 422.8 1399.0
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 1 0.4% 0 0.0% 2 2.0 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 86 32.1% 23 26.7% 11 29.9 61.9
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 4 1.5% 4 100% 0 0.0 0.0
Single 260 98.5% 88 33.8% 11 112.4 529.0
3.0 Error, EXPLAIN and HELP statistics (All OCLC-Z39.50 databases)
___________________________________________________________________
Percent of commands that contained errors 11.8%
Ten most frequent errors:
1. First word of command is invalid 37.6%
2. NS command - no next screen 28.0%
3. FIND command with invalid index name 7.5%
4. Search term missing from search command 3.2%
5. DISPLAY command contains invalid word 2.2%
6. Add-on search with no previous result 2.2%
7. 945 2.2%
8. Valid command at an inappropriate time 1.1%
9. SHOW command contains invalid word 1.1%
10. DISPLAY command-record numbers too large 1.1%
11. All others 14.0%
Ten most frequent EXPLAIN requests:
1. GUIDE: Z39.50 non-A&I DBS w/o truncation 31.3%
2. GUIDE (ART DB) 25.0%
3. LOCATE (Z39.50 DBS) 18.8%
4. INDEXES (MLA DB) 12.5%
5. CATALOG 6.3%
6. ADDON SEARCH 6.3%
11. All others 0.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 33.3%
2. First word of command is invalid 30.6%
3. FIND command with invalid index name 8.3%
4. FIND command retrieves 1 book 5.6%
5. FIND command retrieves >1 book 5.6%
6. DISPLAY command-first of >1 screen 5.6%
7. FIND command with zero results 2.8%
8. DISPLAY command - middle of >1 screen 2.8%
9. 733 2.8%
10. 1243 2.8%
11. All others 0.0%
Ten most frequent SHOW requests:
1. 0.0%
2. 0.0%
3. 0.0%
4. 0.0%
5. 0.0%
6. 0.0%
7. 0.0%
8. 0.0%
9. 0.0%
10. 0.0%
11. All others 0.0%
OCLmm/dd oclc MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS (weekly)