MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS
Time period: 05/05/01 through 05/11/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 112 525 637
Davis 321 66 387
Irvine 129 0 129
Los Angeles 9 151 160
Riverside 156 5 161
San Diego 71 25 96
San Francisco 17 0 17
Santa Barbara 70 33 103
Santa Cruz 26 8 34
Other - UC 0 25 25
Other-Network UC n/a 1,883 1,883
_______ ______ _____
911 2,721 3,632
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 21 74 837
2-4 a.m. 3 6 79
4-6 a.m. 42 70 297
6-8 a.m. 106 234 1,652
8-10 a.m. 378 1,159 9,602
10-12 a.m. 684 2,006 15,653
12-2 p.m. 556 1,487 11,024
2-4 p.m. 700 2,023 17,244
4-6 p.m. 589 1,996 15,248
6-8 p.m. 256 967 6,795
8-10 p.m. 164 599 3,426
10-12 p.m. 133 846 4,187
__________ __________ __________ _________________
Total: 3,632 11,467 86,044
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 344 1,501 1,845
Davis 854 112 966
Irvine 277 0 277
Los Angeles 29 405 434
Riverside 773 15 788
San Diego 175 61 236
San Francisco 89 0 89
Santa Barbara 163 63 226
Santa Cruz 83 19 102
Other - UC 0 67 67
Other-Network UC n/a 6,437 6,437
_______ ______ _____
2,787 8,680 11,467
Number of FIND commands by database
WorldCat 9,757
Art Index 106
ArticleFirst 488
ContentsFirst 10
ERIC 0
GPO 0
PapersFirst Index 408
ProceedingsFirst Index 74
SocAbstracts 0
PAIS International 0
MLA Bibliography 526
RILM Index 98
Total number of FIND commands 11,467
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,686 18,514 20,200
Davis 5,836 1,063 6,899
Irvine 1,765 0 1,765
Los Angeles 298 3,907 4,205
Riverside 6,649 46 6,695
San Diego 1,199 808 2,007
San Francisco 885 0 885
Santa Barbara 839 270 1,109
Santa Cruz 1,243 156 1,399
Other - UC 0 340 340
Other-Network UC n/a 40,540 40,540
_______ ______ _____
20,400 65,644 86,044
Number of Records Displayed by database
WorldCat 76,969
Art Index 634
ArticleFirst 1,905
ContentsFirst 210
ERIC 0
GPO 0
PapersFirst Index 914
ProceedingsFirst Index 287
SocAbstracts 0
PAIS International 0
MLA Bibliography 4,229
RILM Index 896
Total number of Records Displayed 86,044
1.4 Relative Use of Databases
______________________________
Relative use of OCLC-Z39.50 databases: Sessions Percentage
WorldCat 2,810 77.4%
Art Index 46 1.3%
ArticleFirst 251 6.9%
ContentsFirst 18 0.5%
ERIC 0 0.0%
GPO 0 0.0%
PapersFirst Index 208 5.7%
ProceedingsFirst Index 61 1.7%
SocAbstracts 0 0.0%
PAIS International 0 0.0%
MLA Bibliography 207 5.7%
RILM Index 31 0.9%
Percent of searches done in the WCAT database 85.1%
Percent of searches done in the ART database 0.9%
Percent of searches done in the JRNL database 4.3%
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 3.6%
Percent of searches done in the PROC database 0.6%
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 4.6%
Percent of searches done in the RILM database 0.9%
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 2.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.1 WorldCat Database Statistics
_________________________________
Median session length (minutes:seconds) 13:58
Average session length (minutes:seconds) 21:55
Longest session recorded (minutes:seconds) 248:20
Average number of searches completed per session 3.5
Retrievals per search - median 2.0
Retrievals per search - average 1439.7
Retrievals per search - standard deviation 21551
Percent of searches completed with 0 results 25.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 8,704 33.3%
DISPLAY (excluding automatic displays) 11,860 45.4%
HELP 39 0.1%
EXPLAIN 87 0.3%
SET/RESET 1,984 7.6%
SHOW 74 0.3%
ADD ON (AND, OR, AND NOT) 1,053 4.0%
LOGON or LOGOFF 1,938 7.4%
COMMENT 0 0.0%
USE 15 0.1%
OTHER 374 1.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 9.5%
SHORT 41.0%
LONG 7.9%
TAGS 0.2%
FIELDS 8.6%
PERIODICALS 22.0%
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 877 9.3% 217 24.7% 3 25.1 82.9
SUBJECT 228 2.4% 31 13.6% 71 5584.9 37650.6
EXACT SUBJECT 8 0.1% 7 87.5% 79 79.0 0.0
SERIES 113 1.2% 46 40.7% 4 654.2 2698.2
EXACT SERIES 0 0.0% 0 0.0% 0 0.0 0.0
DATE 2 0.0% 1 50.0% 103 103.0 0.0
LANGUAGE 9 0.1% 1 11.1% 18 81.8 125.6
FORM 165 1.8% 21 12.7% 11 78.8 305.3
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 13 0.1% 3 23.1% 8 96.9 219.7
ACCESSION NUMBER 206 2.2% 8 3.9% 1 1.0 0.1
PLACE OF PUBL. 14 0.1% 7 50.0% 8 23.4 39.0
UNIFORM TITLE 0 0.0% 0 0.0% 0 0.0 0.0
GOV DOC NUM 0 0.0% 0 0.0% 0 0.0 0.0
ISBN/ISSN/LCCN 653 6.9% 183 28.0% 2 5.4 14.6
CODEN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1,572 16.7% 492 31.3% 5 70.3 432.9
EXACT PE 258 2.7% 50 19.4% 4 15.9 28.6
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 263 2.8% 63 24.0% 7 131.2 486.3
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 5,035 53.5% 1,366 27.1% 10 2942.1 32481.8
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 704 8.1% 211 30.0% 7 83.2 355.1
Single 7,992 91.9% 2,068 25.9% 6 2024.6 26508.5
2.2 Art Index Database Statistics
__________________________________
Median session length (minutes:seconds) 2:53
Average session length (minutes:seconds) 5:16
Longest session recorded (minutes:seconds) 17:08
Average number of searches completed per session 2.3
Retrievals per search - median 2.0
Retrievals per search - average 99.0
Retrievals per search - standard deviation 807.0
Percent of searches completed with 0 results 36.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 103 32.4%
DISPLAY (excluding automatic displays) 98 30.8%
HELP 13 4.1%
EXPLAIN 8 2.5%
SET/RESET 12 3.8%
SHOW 1 0.3%
ADD ON (AND, OR, AND NOT) 3 0.9%
LOGON or LOGOFF 69 21.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 11 3.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 86.9%
LONG 3.1%
TAGS 0.0%
FIELDS 4.6%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 3.8%
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 12 11.5% 8 66.7% 1 1.3 0.5
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 54 51.9% 19 35.2% 37 282.6 1399.0
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 38 36.5% 10 26.3% 4 21.3 47.7
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 1 1.0% 0 0.0% 1 1.0 0.0
Single 102 99.0% 37 36.3% 10 161.4 1028.7
2.3 ArticleFirst Database Statistics
_____________________________________
Median session length (minutes:seconds) 13:23
Average session length (minutes:seconds) 20:39
Longest session recorded (minutes:seconds) 179:09
Average number of searches completed per session 1.9
Retrievals per search - median 2.0
Retrievals per search - average 145.5
Retrievals per search - standard deviation 831.2
Percent of searches completed with 0 results 38.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 442 41.5%
DISPLAY (excluding automatic displays) 248 23.3%
HELP 6 0.6%
EXPLAIN 23 2.2%
SET/RESET 205 19.2%
SHOW 3 0.3%
ADD ON (AND, OR, AND NOT) 46 4.3%
LOGON or LOGOFF 83 7.8%
COMMENT 0 0.0%
USE 1 0.1%
OTHER 9 0.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.1%
SHORT 70.6%
LONG 1.0%
TAGS 0.0%
FIELDS 5.8%
PERIODICALS 16.0%
COMMENTS 0.0%
Other 1.6%
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 258 45.7% 105 40.7% 7 126.9 849.8
EXACT TITLE 2 0.4% 2 100% 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 14 2.5% 5 35.7% 17 1498.8 3307.5
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 33 5.9% 10 30.3% 4 14.3 23.2
EXACT PE 8 1.4% 3 37.5% 3 3.8 3.6
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 249 44.1% 91 36.5% 26 319.4 996.8
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 122 27.6% 57 46.7% 8 197.9 817.5
Single 320 72.4% 102 31.9% 14 266.0 1148.1
2.4 ContentsFirst Database Statistics
______________________________________
Median session length (minutes:seconds) 91:51
Average session length (minutes:seconds) 91:51
Longest session recorded (minutes:seconds) 91:51
Average number of searches completed per session 0.6
Retrievals per search - median 0.5
Retrievals per search - average 26.0
Retrievals per search - standard deviation 38.9
Percent of searches completed with 0 results 50.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9 13.6%
DISPLAY (excluding automatic displays) 35 53.0%
HELP 1 1.5%
EXPLAIN 0 0.0%
SET/RESET 18 27.3%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 1.5%
LOGON or LOGOFF 1 1.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 1 1.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 36.1%
SHORT 41.7%
LONG 13.9%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 8.3%
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 5 55.6% 3 60.0% 73 72.5 13.4
EXACT JOURNAL 3 33.3% 2 66.7% 97 97.0 0.0
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 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
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1 11.1% 0 0.0% 1 1.0 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 0 0.0% 0 0.0% 0 0.0 0.0
Single 9 100% 5 55.6% 73 60.8 42.2
2.5 PapersFirst Index Database Statistics
__________________________________________
Median session length (minutes:seconds) 16:23
Average session length (minutes:seconds) 21:16
Longest session recorded (minutes:seconds) 97:48
Average number of searches completed per session 2.0
Retrievals per search - median 1.0
Retrievals per search - average 162.1
Retrievals per search - standard deviation 1568.5
Percent of searches completed with 0 results 48.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 374 41.3%
DISPLAY (excluding automatic displays) 201 22.2%
HELP 10 1.1%
EXPLAIN 25 2.8%
SET/RESET 187 20.7%
SHOW 5 0.6%
ADD ON (AND, OR, AND NOT) 34 3.8%
LOGON or LOGOFF 51 5.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 18 2.0%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.7%
SHORT 61.4%
LONG 4.0%
TAGS 0.0%
FIELDS 11.0%
PERIODICALS 14.3%
COMMENTS 0.0%
Other 5.5%
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 194 37.4% 94 48.5% 8 580.5 3133.5
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 255 49.1% 142 55.7% 3 60.1 198.5
EXACT TITLE 1 0.2% 1 100% 0 0.0 0.0
KEYWORD 6 1.2% 3 50.0% 2 1.7 0.6
CONFERENCE 3 0.6% 2 66.7% 50 50.0 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 3 0.6% 1 33.3% 602 601.5 832.3
EXACT JOURNAL 1 0.2% 1 100% 0 0.0 0.0
DATE 30 5.8% 13 43.3% 35 72.3 108.7
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 22 4.2% 3 13.6% 2 11.2 17.6
EXACT PE 4 0.8% 0 0.0% 4 4.0 2.4
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 142 38.0% 79 55.6% 4 25.9 65.3
Single 232 62.0% 100 43.1% 6 487.1 2735.6
2.6 ProceedingsFirst Index Database Statistics
_______________________________________________
Median session length (minutes:seconds) 15:01
Average session length (minutes:seconds) 16:14
Longest session recorded (minutes:seconds) 44:36
Average number of searches completed per session 1.2
Retrievals per search - median 0.0
Retrievals per search - average 1.6
Retrievals per search - standard deviation 3.0
Percent of searches completed with 0 results 60.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 74 29.6%
DISPLAY (excluding automatic displays) 47 18.8%
HELP 9 3.6%
EXPLAIN 40 16.0%
SET/RESET 54 21.6%
SHOW 2 0.8%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 17 6.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 7 2.8%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 60.0%
SHORT 15.0%
LONG 15.0%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 10.0%
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 1 1.3% 0 0.0% 1 1.0 0.0
SPONSOR 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 19 25.0% 17 89.5% 4 4.0 4.2
CONFERENCE 51 67.1% 25 49.0% 4 4.2 3.7
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 1 1.3% 1 100% 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 2 2.6% 1 50.0% 1 1.0 0.0
ACCESSION NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 1.3% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 1 1.3% 1 100% 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 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 2.7% 1 50.0% 1 1.0 0.0
Single 72 97.3% 44 61.1% 4 4.1 3.7
2.7 MLA Bibliography Database Statistics
_________________________________________
Median session length (minutes:seconds) 4:18
Average session length (minutes:seconds) 13:09
Longest session recorded (minutes:seconds) 684:15
Average number of searches completed per session 2.5
Retrievals per search - median 3.0
Retrievals per search - average 165.9
Retrievals per search - standard deviation 1911.8
Percent of searches completed with 0 results 33.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 522 37.7%
DISPLAY (excluding automatic displays) 344 24.8%
HELP 45 3.2%
EXPLAIN 44 3.2%
SET/RESET 79 5.7%
SHOW 4 0.3%
ADD ON (AND, OR, AND NOT) 4 0.3%
LOGON or LOGOFF 272 19.6%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 72 5.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 82.3%
LONG 10.5%
TAGS 0.0%
FIELDS 2.3%
PERIODICALS 0.7%
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 116 22.1% 46 39.7% 39 888.1 5133.0
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 212 40.4% 79 37.3% 7 111.7 479.8
SERIES 3 0.6% 3 100% 0 0.0 0.0
EXACT SERIES 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 26 5.0% 8 30.8% 6 130.9 239.0
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 3 0.6% 0 0.0% 1 10.0 15.6
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 165 31.4% 39 23.6% 10 58.6 255.4
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 8 1.5% 1 12.5% 5 53.9 119.1
Single 509 98.4% 173 34.0% 13 256.1 2377.1
2.8 RILM Index Database Statistics
___________________________________
Median session length (minutes:seconds) 5:56
Average session length (minutes:seconds) 9:27
Longest session recorded (minutes:seconds) 47:48
Average number of searches completed per session 3.2
Retrievals per search - median 6.5
Retrievals per search - average 270.2
Retrievals per search - standard deviation 1264.3
Percent of searches completed with 0 results 30.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 87 32.5%
DISPLAY (excluding automatic displays) 101 37.7%
HELP 3 1.1%
EXPLAIN 4 1.5%
SET/RESET 9 3.4%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 11 4.1%
LOGON or LOGOFF 42 15.7%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 11 4.1%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 19.5%
SHORT 68.0%
LONG 9.4%
TAGS 0.0%
FIELDS 3.1%
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 14 15.4% 6 42.9% 13 20.6 22.8
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 17 18.7% 8 47.1% 6 10.6 12.4
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 37 40.7% 8 21.6% 40 832.4 2249.9
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 21 23.1% 6 28.6% 33 85.3 94.9
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 1 1.1% 0 0.0% 49 49.0 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 1 1.1% 0 0.0% 170 170.0 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 4 4.6% 1 25.0% 13 61.3 94.3
Single 83 95.4% 26 31.3% 25 447.9 1640.0
3.0 Error, EXPLAIN and HELP statistics (All OCLC-Z39.50 databases)
___________________________________________________________________
Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 30.1%
2. First word of command is invalid 20.0%
3. Z39.50 host cannot process command 11.0%
4. FIND command with invalid index name 5.8%
5. Too many truncated words to process 5.6%
6. DISPLAY command contains invalid word 4.7%
7. Max. # of ports to a Z39 db are in use 3.4%
8. Index invalid in current database 3.1%
9. DISPLAY command - no FIND results 1.6%
10. PS command - no previous screen 1.5%
11. All others 13.2%
Ten most frequent EXPLAIN requests:
1. INDEXES (PROC DB) 13.4%
2. INDEXES (WCAT DB) 10.8%
3. LOCATE (Z39.50 DBS) 10.0%
4. LOCATE (Z39.50 DBS) 9.5%
5. INDEXES (JRNL DB) 7.4%
6. GUIDE: Z39.50 non-A&I DBS w/o truncation 6.9%
7. FIND (Z39.50 DBS) 5.6%
8. GUIDE (Z39.50 A&I DBS w/o truncation) 4.8%
9. Unrecognized term-reminders off 3.9%
10. Unrecognized term 3.9%
11. All others 23.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.4%
2. First word of command is invalid 19.3%
3. DISPLAY command-complete in one screen 12.6%
4. F/BR with index invalid in current DB 8.1%
5. DISPLAY command - middle of >1 screen 5.0%
6. DISPLAY command-first of >1 screen 4.8%
7. FIND command with invalid index name 4.2%
8. FIND command with zero results 3.4%
9. NS command - no next screen 2.8%
10. FIND command retrieves >1 book 2.5%
11. All others 12.9%
Ten most frequent SHOW requests:
1. HISTORY 82.0%
2. GLOSSARY 5.6%
3. SETTINGS (Z39.50 DBS) 4.5%
4. SEARCH 3.4%
5. LIBRARY NEWS 2.2%
6. SYSTEM NEWS 1.1%
11. All others 1.1%
OCLmm/dd oclc MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS (weekly)