MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS
Time period: 03/09/02 through 03/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 14 34 48
Davis 5 0 5
Irvine 4 0 4
Los Angeles 0 5 5
Riverside 0 1 1
San Diego 4 2 6
San Francisco 0 0 0
Santa Barbara 4 1 5
Santa Cruz 0 2 2
Other - UC 0 1 1
Other-Network UC n/a 8 8
_______ ______ _____
31 54 85
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 0 0 0
2-4 a.m. 0 0 0
4-6 a.m. 1 1 0
6-8 a.m. 0 0 0
8-10 a.m. 7 9 62
10-12 a.m. 22 37 126
12-2 p.m. 16 41 573
2-4 p.m. 15 24 235
4-6 p.m. 10 45 524
6-8 p.m. 7 11 85
8-10 p.m. 7 25 182
10-12 p.m. 0 0 0
__________ __________ __________ _________________
Total: 85 193 1,787
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 47 61 108
Davis 16 0 16
Irvine 1 0 1
Los Angeles 0 15 15
Riverside 0 5 5
San Diego 12 3 15
San Francisco 0 0 0
Santa Barbara 6 4 10
Santa Cruz 0 3 3
Other - UC 0 1 1
Other-Network UC n/a 19 19
_______ ______ _____
82 111 193
Number of FIND commands by database
WorldCat 0
Art Index 29
ArticleFirst 0
ContentsFirst 0
ERIC 0
GPO 0
PapersFirst Index 0
ProceedingsFirst Index 0
SocAbstracts 0
PAIS International 0
MLA Bibliography 164
RILM Index 0
Total number of FIND commands 193
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 258 745 1,003
Davis 38 0 38
Irvine 0 0 0
Los Angeles 0 248 248
Riverside 0 1 1
San Diego 148 44 192
San Francisco 0 0 0
Santa Barbara 54 27 81
Santa Cruz 0 13 13
Other - UC 0 0 0
Other-Network UC n/a 211 211
_______ ______ _____
498 1,289 1,787
Number of Records Displayed by database
WorldCat 0
Art Index 201
ArticleFirst 0
ContentsFirst 0
ERIC 0
GPO 0
PapersFirst Index 0
ProceedingsFirst Index 0
SocAbstracts 0
PAIS International 0
MLA Bibliography 1,586
RILM Index 0
Total number of Records Displayed 1,787
1.4 Relative Use of Databases
______________________________
Relative use of OCLC-Z39.50 databases: Sessions Percentage
WorldCat 0 0.0%
Art Index 12 14.1%
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 73 85.9%
RILM Index 0 0.0%
Percent of searches done in the WCAT database 0.0%
Percent of searches done in the ART database 15.0%
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 85.0%
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 0.8
Standard deviation in seconds 2.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.5
Standard deviation in seconds 0.5
2.1 Art Index Database Statistics
__________________________________
Median session length (minutes:seconds) 1:32
Average session length (minutes:seconds) 3:04
Longest session recorded (minutes:seconds) 12:13
Average number of searches completed per session 2.4
Retrievals per search - median 7.0
Retrievals per search - average 42.7
Retrievals per search - standard deviation 77.1
Percent of searches completed with 0 results 17.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 29 37.7%
DISPLAY (excluding automatic displays) 25 32.5%
HELP 1 1.3%
EXPLAIN 3 3.9%
SET/RESET 4 5.2%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 14 18.2%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 1 1.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.0%
SHORT 100%
LONG 0.0%
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 2 6.9% 1 50.0% 1 1.0 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 3 10.3% 0 0.0% 7 33.3 47.4
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 24 82.8% 4 16.7% 10 56.9 87.8
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 0 0.0% 0 0.0% 0 0.0 0.0
Single 29 100% 5 17.2% 10 51.6 82.2
2.2 MLA Bibliography Database Statistics
_________________________________________
Median session length (minutes:seconds) 4:14
Average session length (minutes:seconds) 6:52
Longest session recorded (minutes:seconds) 35:02
Average number of searches completed per session 2.2
Retrievals per search - median 4.0
Retrievals per search - average 44.3
Retrievals per search - standard deviation 120.5
Percent of searches completed with 0 results 29.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 161 34.5%
DISPLAY (excluding automatic displays) 128 27.4%
HELP 9 1.9%
EXPLAIN 17 3.6%
SET/RESET 27 5.8%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 3 0.6%
LOGON or LOGOFF 97 20.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 25 5.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.4%
SHORT 84.9%
LONG 8.4%
TAGS 0.0%
FIELDS 2.4%
PERIODICALS 1.8%
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 29 17.7% 7 24.1% 128 105.1 78.4
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 66 40.2% 26 39.4% 5 41.7 156.6
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 24 14.6% 6 25.0% 53 144.3 227.5
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 0.6% 0 0.0% 12 12.0 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 44 26.8% 8 18.2% 9 16.2 13.8
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 4 2.5% 0 0.0% 1 1.8 1.5
Single 156 97.5% 47 30.1% 17 65.7 142.7
3.0 Error, EXPLAIN and HELP statistics (All OCLC-Z39.50 databases)
___________________________________________________________________
Percent of commands that contained errors 10.7%
Ten most frequent errors:
1. First word of command is invalid 38.5%
2. NS command - no next screen 27.7%
3. FIND command with invalid index name 10.8%
4. Valid command at an inappropriate time 3.1%
5. PS command - no previous screen 3.1%
6. Index invalid in current database 3.1%
7. Command contains escape or arrow key 3.1%
8. 1243 3.1%
9. SHOW command contains invalid word 1.5%
10. DISPLAY command - no FIND results 1.5%
11. All others 4.6%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 40.0%
2. GUIDE: Z39.50 non-A&I DBS w/o truncation 35.0%
3. LOCATE (Z39.50 DBS) 10.0%
4. DISPLAY (Z39.50 DBS) 5.0%
5. GUIDE (ART DB) 5.0%
6. INDEXES (MLA DB) 5.0%
11. All others 0.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 36.7%
2. First word of command is invalid 13.3%
3. DISPLAY command-complete in one screen 13.3%
4. DISPLAY command - middle of >1 screen 13.3%
5. FIND command with invalid index name 6.7%
6. F/BR with index invalid in current DB 6.7%
7. SHOW command with invalid modifier 3.3%
8. FIND command retrieves 1 book 3.3%
9. DISPLAY command-first of >1 screen 3.3%
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)