MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS
Time period: 04/07/01 through 04/13/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 124 585 709
Davis 360 61 421
Irvine 92 0 92
Los Angeles 6 120 126
Riverside 123 8 131
San Diego 76 19 95
San Francisco 22 0 22
Santa Barbara 28 13 41
Santa Cruz 32 8 40
Other - UC 3 32 35
Other-Network UC n/a 1,510 1,510
_______ ______ _____
866 2,356 3,222
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 104 613
2-4 a.m. 2 18 262
4-6 a.m. 3 4 20
6-8 a.m. 42 152 845
8-10 a.m. 269 1,021 6,966
10-12 a.m. 675 2,217 18,915
12-2 p.m. 514 1,726 13,777
2-4 p.m. 718 2,452 19,013
4-6 p.m. 550 1,784 15,767
6-8 p.m. 215 740 6,090
8-10 p.m. 156 464 2,713
10-12 p.m. 69 459 3,714
__________ __________ __________ _________________
Total: 3,222 11,141 88,695
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 370 1,942 2,312
Davis 1,057 106 1,163
Irvine 212 0 212
Los Angeles 11 311 322
Riverside 591 16 607
San Diego 174 39 213
San Francisco 78 0 78
Santa Barbara 106 69 175
Santa Cruz 132 41 173
Other - UC 3 89 92
Other-Network UC n/a 5,794 5,794
_______ ______ _____
2,734 8,407 11,141
Number of FIND commands by database
WorldCat 10,003
Art Index 92
ArticleFirst 197
ContentsFirst 12
ERIC 0
GPO 0
PapersFirst Index 250
ProceedingsFirst Index 37
SocAbstracts 0
PAIS International 0
MLA Bibliography 528
RILM Index 22
Total number of FIND commands 11,141
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,070 16,218 19,288
Davis 8,827 635 9,462
Irvine 2,978 0 2,978
Los Angeles 62 2,182 2,244
Riverside 5,614 341 5,955
San Diego 1,258 184 1,442
San Francisco 648 0 648
Santa Barbara 641 276 917
Santa Cruz 347 141 488
Other - UC 24 743 767
Other-Network UC n/a 44,506 44,506
_______ ______ _____
23,469 65,226 88,695
Number of Records Displayed by database
WorldCat 80,062
Art Index 520
ArticleFirst 1,501
ContentsFirst 112
ERIC 0
GPO 0
PapersFirst Index 743
ProceedingsFirst Index 416
SocAbstracts 0
PAIS International 0
MLA Bibliography 5,237
RILM Index 104
Total number of Records Displayed 88,695
1.4 Relative Use of Databases
______________________________
Relative use of OCLC-Z39.50 databases: Sessions Percentage
WorldCat 2,716 84.3%
Art Index 37 1.1%
ArticleFirst 107 3.3%
ContentsFirst 12 0.4%
ERIC 0 0.0%
GPO 0 0.0%
PapersFirst Index 149 4.6%
ProceedingsFirst Index 25 0.8%
SocAbstracts 0 0.0%
PAIS International 0 0.0%
MLA Bibliography 169 5.2%
RILM Index 7 0.2%
Percent of searches done in the WCAT database 89.8%
Percent of searches done in the ART database 0.8%
Percent of searches done in the JRNL database 1.8%
Percent of searches done in the JRNLT database 0.1%
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 2.2%
Percent of searches done in the PROC database 0.3%
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 4.7%
Percent of searches done in the RILM database 0.2%
1.5 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 3.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.7
Standard deviation in seconds 12.2
2.1 WorldCat Database Statistics
_________________________________
Median session length (minutes:seconds) 14:30
Average session length (minutes:seconds) 21:11
Longest session recorded (minutes:seconds) 266:19
Average number of searches completed per session 3.7
Retrievals per search - median 2.0
Retrievals per search - average 146.5
Retrievals per search - standard deviation 1595.0
Percent of searches completed with 0 results 24.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,005 33.8%
DISPLAY (excluding automatic displays) 12,148 45.6%
HELP 43 0.2%
EXPLAIN 73 0.3%
SET/RESET 1,902 7.1%
SHOW 51 0.2%
ADD ON (AND, OR, AND NOT) 998 3.7%
LOGON or LOGOFF 2,049 7.7%
COMMENT 0 0.0%
USE 11 0.0%
OTHER 353 1.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.1%
SHORT 40.4%
LONG 8.0%
TAGS 0.3%
FIELDS 8.5%
PERIODICALS 21.9%
COMMENTS 0.0%
Other 10.7%
WorldCat 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
EXACT TITLE 1,264 13.2% 350 27.7% 3 36.6 475.0
SUBJECT 215 2.3% 26 12.1% 50 1315.3 4302.9
EXACT SUBJECT 16 0.2% 10 62.5% 81 87.0 89.0
SERIES 162 1.7% 61 37.7% 9 69.6 235.8
EXACT SERIES 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 22 0.2% 4 18.2% 61 217.0 402.3
FORM 103 1.1% 12 11.7% 9 46.4 98.0
MUSIC PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
REPORT NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 8 0.1% 2 25.0% 5 1083.3 2546.7
ACCESSION NUMBER 258 2.7% 11 4.3% 1 1.0 0.0
PLACE OF PUBL. 14 0.1% 2 14.3% 5 668.1 2114.7
UNIFORM TITLE 1 0.0% 0 0.0% 1 1.0 0.0
GOV DOC NUM 7 0.1% 7 100% 0 0.0 0.0
ISBN/ISSN/LCCN 539 5.6% 182 33.8% 2 3.3 9.7
CODEN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1,686 17.7% 478 28.3% 5 65.4 523.5
EXACT PE 148 1.6% 25 16.9% 4 30.0 102.6
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 210 2.2% 47 22.4% 5 51.2 206.9
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 4,887 51.2% 1,165 23.8% 8 255.1 2265.3
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 516 5.7% 102 19.8% 5 44.2 167.2
Single 8,485 94.3% 2,170 25.6% 5 208.6 1929.3
2.2 Art Index Database Statistics
__________________________________
Median session length (minutes:seconds) 4:14
Average session length (minutes:seconds) 5:54
Longest session recorded (minutes:seconds) 21:03
Average number of searches completed per session 2.5
Retrievals per search - median 3.0
Retrievals per search - average 47.4
Retrievals per search - standard deviation 104.4
Percent of searches completed with 0 results 39.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 89 32.5%
DISPLAY (excluding automatic displays) 68 24.8%
HELP 18 6.6%
EXPLAIN 17 6.2%
SET/RESET 15 5.5%
SHOW 5 1.8%
ADD ON (AND, OR, AND NOT) 3 1.1%
LOGON or LOGOFF 48 17.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 11 4.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.1%
SHORT 95.5%
LONG 1.1%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 2.2%
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 20 22.2% 7 35.0% 6 10.8 9.2
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 44 48.9% 15 34.1% 73 115.5 123.3
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 2 2.2% 2 100% 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 26.7% 11 45.8% 21 67.4 161.9
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 2 2.3% 1 50.0% 52 52.0 0.0
Single 86 97.7% 33 38.4% 21 80.4 127.1
2.3 ArticleFirst Database Statistics
_____________________________________
Median session length (minutes:seconds) 12:20
Average session length (minutes:seconds) 18:50
Longest session recorded (minutes:seconds) 118:36
Average number of searches completed per session 1.8
Retrievals per search - median 2.0
Retrievals per search - average 191.0
Retrievals per search - standard deviation 1339.0
Percent of searches completed with 0 results 29.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 184 34.5%
DISPLAY (excluding automatic displays) 149 28.0%
HELP 18 3.4%
EXPLAIN 15 2.8%
SET/RESET 93 17.4%
SHOW 2 0.4%
ADD ON (AND, OR, AND NOT) 13 2.4%
LOGON or LOGOFF 40 7.5%
COMMENT 0 0.0%
USE 1 0.2%
OTHER 18 3.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 13.3%
SHORT 56.9%
LONG 1.1%
TAGS 0.0%
FIELDS 9.0%
PERIODICALS 18.6%
COMMENTS 0.0%
Other 1.1%
ArticleFirst 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
TITLE WORD 123 57.2% 40 32.5% 5 183.8 599.4
EXACT TITLE 1 0.5% 1 100% 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
KEYWORD 4 1.9% 1 25.0% 248 6074.7 10293.7
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
DESC. OF ISSUE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 20 9.3% 2 10.0% 4 63.8 234.7
EXACT PE 2 0.9% 0 0.0% 6 5.5 2.1
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 65 30.2% 22 33.8% 7 88.3 250.1
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 29 15.8% 11 37.9% 6 52.7 117.9
Single 155 84.2% 43 27.7% 6 326.2 1766.5
2.4 ContentsFirst Database Statistics
______________________________________
Median session length (minutes:seconds) 28:02
Average session length (minutes:seconds) 28:02
Longest session recorded (minutes:seconds) 31:41
Average number of searches completed per session 1.0
Retrievals per search - median 9.0
Retrievals per search - average 46.6
Retrievals per search - standard deviation 63.4
Percent of searches completed with 0 results 50.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11 27.5%
DISPLAY (excluding automatic displays) 9 22.5%
HELP 2 5.0%
EXPLAIN 1 2.5%
SET/RESET 12 30.0%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 2.5%
LOGON or LOGOFF 2 5.0%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 2 5.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 77.8%
SHORT 11.1%
LONG 11.1%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
ContentsFirst 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:
JOURNAL 4 33.3% 1 25.0% 133 103.7 50.8
EXACT JOURNAL 6 50.0% 4 66.7% 115 115.0 77.8
KEYWORD 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
EXACT SUBJECT 1 8.3% 1 100% 0 0.0 0.0
DESC. OF ISSUE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
ACCESSION NUMBER 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 1 8.3% 1 100% 0 0.0 0.0
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 1 9.1% 1 100% 0 0.0 0.0
Single 10 90.9% 5 50.0% 133 108.2 53.3
2.5 PapersFirst Index Database Statistics
__________________________________________
Median session length (minutes:seconds) 13:53
Average session length (minutes:seconds) 19:57
Longest session recorded (minutes:seconds) 80:17
Average number of searches completed per session 1.7
Retrievals per search - median 1.0
Retrievals per search - average 46.4
Retrievals per search - standard deviation 305.4
Percent of searches completed with 0 results 40.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 227 38.5%
DISPLAY (excluding automatic displays) 159 26.9%
HELP 3 0.5%
EXPLAIN 2 0.3%
SET/RESET 141 23.9%
SHOW 1 0.2%
ADD ON (AND, OR, AND NOT) 23 3.9%
LOGON or LOGOFF 26 4.4%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 8 1.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 15.7%
SHORT 46.1%
LONG 4.1%
TAGS 0.0%
FIELDS 8.3%
PERIODICALS 17.0%
COMMENTS 0.0%
Other 8.8%
PapersFirst 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 70 26.7% 26 37.1% 10 207.3 703.2
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
EDITOR 0 0.0% 0 0.0% 0 0.0 0.0
SPONSOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 145 55.3% 75 51.7% 3 22.6 62.9
EXACT TITLE 1 0.4% 1 100% 0 0.0 0.0
KEYWORD 1 0.4% 0 0.0% 1 1.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
EXACT CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE PLACE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE DATE 0 0.0% 0 0.0% 0 0.0 0.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
JOURNAL 2 0.8% 0 0.0% 75 75.0 97.6
EXACT JOURNAL 1 0.4% 0 0.0% 39 39.0 0.0
DATE 9 3.4% 2 22.2% 3 7.4 8.7
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 28 10.7% 5 17.9% 2 5.4 8.7
EXACT PE 5 1.9% 0 0.0% 1 2.0 1.7
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 0 0.0% 0 0.0% 0 0.0 0.0
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 34 15.0% 16 47.1% 3 9.1 13.4
Single 193 85.0% 76 39.4% 3 91.9 440.3
2.6 ProceedingsFirst Index Database Statistics
_______________________________________________
Median session length (minutes:seconds) 13:11
Average session length (minutes:seconds) 23:42
Longest session recorded (minutes:seconds) 183:03
Average number of searches completed per session 1.5
Retrievals per search - median 3.0
Retrievals per search - average 53.2
Retrievals per search - standard deviation 260.9
Percent of searches completed with 0 results 35.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 36 22.5%
DISPLAY (excluding automatic displays) 73 45.6%
HELP 6 3.7%
EXPLAIN 5 3.1%
SET/RESET 20 12.5%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 0.6%
LOGON or LOGOFF 19 11.9%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 0 0.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 48.2%
SHORT 13.3%
LONG 32.5%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 6.0%
ProceedingsFirst 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:
EDITOR 0 0.0% 0 0.0% 0 0.0 0.0
SPONSOR 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 5 12.8% 1 20.0% 11 9.0 6.3
CONFERENCE 31 79.5% 12 38.7% 5 101.7 362.0
CONFERENCE PLACE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE DATE 0 0.0% 0 0.0% 0 0.0 0.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 3 7.7% 3 100% 0 0.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 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 0 0.0% 0 0.0% 0 0.0 0.0
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 3 8.3% 3 100% 0 0.0 0.0
Single 33 91.7% 10 30.3% 7 85.6 329.4
2.7 MLA Bibliography Database Statistics
_________________________________________
Median session length (minutes:seconds) 3:46
Average session length (minutes:seconds) 9:00
Longest session recorded (minutes:seconds) 74:23
Average number of searches completed per session 3.1
Retrievals per search - median 4.0
Retrievals per search - average 126.0
Retrievals per search - standard deviation 613.5
Percent of searches completed with 0 results 28.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 511 40.3%
DISPLAY (excluding automatic displays) 310 24.4%
HELP 35 2.8%
EXPLAIN 41 3.2%
SET/RESET 50 3.9%
SHOW 3 0.2%
ADD ON (AND, OR, AND NOT) 17 1.3%
LOGON or LOGOFF 246 19.4%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 55 4.3%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.0%
SHORT 83.9%
LONG 6.2%
TAGS 0.0%
FIELDS 1.2%
PERIODICALS 3.3%
COMMENTS 0.0%
Other 1.4%
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 102 19.6% 36 35.3% 26 409.0 1267.4
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 178 34.2% 57 32.0% 6 111.0 627.4
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 72 13.8% 20 27.8% 35 260.3 494.4
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 15 2.9% 2 13.3% 10 82.7 199.4
EXACT PE 1 0.2% 1 100% 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 153 29.4% 33 21.6% 11 93.6 450.9
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 12 2.4% 4 33.3% 5 12.8 19.7
Single 497 97.6% 141 28.4% 12 185.5 738.7
2.8 RILM Index Database Statistics
___________________________________
Median session length (minutes:seconds) 9:21
Average session length (minutes:seconds) 10:13
Longest session recorded (minutes:seconds) 19:33
Average number of searches completed per session 3.1
Retrievals per search - median 6.5
Retrievals per search - average 440.4
Retrievals per search - standard deviation 1569.8
Percent of searches completed with 0 results 36.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 21 41.2%
DISPLAY (excluding automatic displays) 17 33.3%
HELP 0 0.0%
EXPLAIN 0 0.0%
SET/RESET 3 5.9%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 2.0%
LOGON or LOGOFF 8 15.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 1 2.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 17.6%
SHORT 82.4%
LONG 0.0%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 0.0%
RILM 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:
AUTHOR 6 26.1% 3 50.0% 8 13.7 12.5
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 4 17.4% 1 25.0% 12 138.3 218.8
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
SERIES 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 10 43.5% 3 30.0% 40 1318.3 2698.6
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
JOURNAL 3 13.0% 2 66.7% 3 3.0 0.0
EXACT JOURNAL 0 0.0% 0 0.0% 0 0.0 0.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
PUBLISHER 0 0.0% 0 0.0% 0 0.0 0.0
DISSERTATION SRC 0 0.0% 0 0.0% 0 0.0 0.0
MAIN WORK 0 0.0% 0 0.0% 0 0.0 0.0
REVIEW ITEM 0 0.0% 0 0.0% 0 0.0 0.0
REVIEWED WORK 0 0.0% 0 0.0% 0 0.0 0.0
COLLECTED WORKS 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
SHORT ENTRY 0 0.0% 0 0.0% 0 0.0 0.0
SPONSOR 0 0.0% 0 0.0% 0 0.0 0.0
CLASSIFICATION 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
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 0 0.0% 0 0.0% 0 0.0 0.0
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 2 9.5% 1 50.0% 3 3.0 0.0
Single 19 90.5% 7 36.8% 20 806.8 2093.4
3.0 Error, EXPLAIN and HELP statistics (All OCLC-Z39.50 databases)
___________________________________________________________________
Percent of commands that contained errors 7.1%
Ten most frequent errors:
1. NS command - no next screen 33.0%
2. First word of command is invalid 18.0%
3. Z39.50 host cannot process command 11.1%
4. Too many truncated words to process 6.8%
5. FIND command with invalid index name 6.0%
6. DISPLAY command contains invalid word 5.8%
7. PS command - no previous screen 1.9%
8. Index invalid in current database 1.6%
9. Search term missing from search command 1.5%
10. Valid command at an inappropriate time 1.3%
11. All others 13.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 19.5%
2. GUIDE: Z39.50 non-A&I DBS w/o truncation 13.0%
3. INDEXES (WCAT DB) 7.8%
4. LOCATE (Z39.50 DBS) 6.5%
5. GUIDE (Z39.50 A&I DBS w/o truncation) 5.8%
6. GUIDE (ART DB) 4.5%
7. INDEXES (PROC DB) 3.2%
8. INDEXES (MLA DB) 2.6%
9. G496 2.6%
10. INDEXES (JRNL DB) 2.6%
11. All others 31.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.9%
2. First word of command is invalid 20.1%
3. DISPLAY command - middle of >1 screen 7.5%
4. DISPLAY command-complete in one screen 5.7%
5. DISPLAY command-first of >1 screen 5.4%
6. DISPLAY command - last of >1 screen 5.4%
7. FIND command with zero results 4.3%
8. FIND command with invalid index name 3.9%
9. F/BR with index invalid in current DB 3.6%
10. FIND command retrieves >1 book 2.9%
11. All others 19.4%
Ten most frequent SHOW requests:
1. HISTORY 82.3%
2. SEARCH 12.9%
3. Z39.50 NEWS 1.6%
4. GLOSSARY 1.6%
11. All others 1.6%
OCLmm/dd oclc MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS (weekly)