MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS
Time period: 04/28/01 through 05/04/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Location Library Remote Total
________ _______ ______ _____
Berkeley 148 488 636
Davis 276 94 370
Irvine 74 0 74
Los Angeles 16 170 186
Riverside 175 5 180
San Diego 60 32 92
San Francisco 24 0 24
Santa Barbara 69 22 91
Santa Cruz 35 6 41
Other - UC 3 18 21
Other-Network UC n/a 1,814 1,814
_______ ______ _____
880 2,649 3,529
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 112 1,114
2-4 a.m. 6 65 529
4-6 a.m. 29 55 379
6-8 a.m. 79 188 1,442
8-10 a.m. 399 1,121 7,682
10-12 a.m. 686 2,163 15,597
12-2 p.m. 581 1,685 12,197
2-4 p.m. 689 1,931 16,599
4-6 p.m. 571 2,102 20,043
6-8 p.m. 220 953 10,071
8-10 p.m. 158 959 14,439
10-12 p.m. 104 923 8,443
__________ __________ __________ _________________
Total: 3,529 12,257 108,535
1.2 FIND commands
__________________
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 491 1,541 2,032
Davis 670 274 944
Irvine 200 0 200
Los Angeles 43 427 470
Riverside 830 14 844
San Diego 149 88 237
San Francisco 86 0 86
Santa Barbara 223 50 273
Santa Cruz 113 18 131
Other - UC 3 43 46
Other-Network UC n/a 6,994 6,994
_______ ______ _____
2,808 9,449 12,257
Number of FIND commands by database
WorldCat 10,896
Art Index 125
ArticleFirst 334
ContentsFirst 9
ERIC 0
GPO 0
PapersFirst Index 308
ProceedingsFirst Index 48
SocAbstracts 0
PAIS International 0
MLA Bibliography 501
RILM Index 36
Total number of FIND commands 12,257
1.3 Records displayed
______________________
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,922 15,872 19,794
Davis 4,958 1,995 6,953
Irvine 1,723 0 1,723
Los Angeles 370 5,766 6,136
Riverside 6,941 79 7,020
San Diego 700 926 1,626
San Francisco 711 0 711
Santa Barbara 1,666 700 2,366
Santa Cruz 765 111 876
Other - UC 5 359 364
Other-Network UC n/a 60,966 60,966
_______ ______ _____
21,761 86,774 108,535
Number of Records Displayed by database
WorldCat 100,076
Art Index 1,024
ArticleFirst 2,138
ContentsFirst 58
ERIC 0
GPO 0
PapersFirst Index 623
ProceedingsFirst Index 415
SocAbstracts 0
PAIS International 0
MLA Bibliography 3,873
RILM Index 328
Total number of Records Displayed 108,535
1.4 Relative Use of Databases
______________________________
Relative use of OCLC-Z39.50 databases: Sessions Percentage
WorldCat 2,853 80.8%
Art Index 54 1.5%
ArticleFirst 211 6.0%
ContentsFirst 12 0.3%
ERIC 0 0.0%
GPO 0 0.0%
PapersFirst Index 162 4.6%
ProceedingsFirst Index 36 1.0%
SocAbstracts 0 0.0%
PAIS International 0 0.0%
MLA Bibliography 183 5.2%
RILM Index 18 0.5%
Percent of searches done in the WCAT database 88.9%
Percent of searches done in the ART database 1.0%
Percent of searches done in the JRNL database 2.7%
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 2.5%
Percent of searches done in the PROC database 0.4%
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 4.1%
Percent of searches done in the RILM database 0.3%
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 1.6
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) 14:22
Average session length (minutes:seconds) 23:06
Longest session recorded (minutes:seconds) 439:49
Average number of searches completed per session 3.8
Retrievals per search - median 2.0
Retrievals per search - average 370.9
Retrievals per search - standard deviation 11921
Percent of searches completed with 0 results 25.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9,914 33.8%
DISPLAY (excluding automatic displays) 13,852 47.2%
HELP 38 0.1%
EXPLAIN 65 0.2%
SET/RESET 1,982 6.7%
SHOW 56 0.2%
ADD ON (AND, OR, AND NOT) 982 3.3%
LOGON or LOGOFF 2,049 7.0%
COMMENT 0 0.0%
USE 10 0.0%
OTHER 421 1.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 8.3%
SHORT 39.1%
LONG 6.6%
TAGS 0.1%
FIELDS 8.1%
PERIODICALS 27.8%
COMMENTS 0.0%
Other 10.1%
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 919 8.8% 243 26.4% 4 26.2 81.5
SUBJECT 228 2.2% 35 15.4% 53 8135.2 78713.1
EXACT SUBJECT 18 0.2% 3 16.7% 9 96.1 157.0
SERIES 172 1.7% 54 31.4% 5 599.9 2511.4
EXACT SERIES 0 0.0% 0 0.0% 0 0.0 0.0
DATE 9 0.1% 5 55.6% 15 30.0 40.6
LANGUAGE 6 0.1% 1 16.7% 198 346.2 517.6
FORM 86 0.8% 11 12.8% 6 54.6 138.2
MUSIC PUBLISHER 4 0.0% 2 50.0% 1 1.0 0.0
REPORT NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
NOTES 11 0.1% 3 27.3% 82 127.9 176.5
ACCESSION NUMBER 345 3.3% 13 3.8% 1 1.0 0.0
PLACE OF PUBL. 2 0.0% 0 0.0% 1,820 1820.0 2569.6
UNIFORM TITLE 1 0.0% 0 0.0% 33 33.0 0.0
GOV DOC NUM 5 0.0% 4 80.0% 1 1.0 0.0
ISBN/ISSN/LCCN 908 8.7% 310 34.1% 1 14.2 161.1
CODEN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 2,334 22.5% 695 29.8% 5 117.1 1263.7
EXACT PE 237 2.3% 43 18.1% 4 41.6 146.2
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 168 1.6% 27 16.1% 6 79.4 313.3
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 4,937 47.5% 1,295 26.2% 9 559.2 9667.7
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 475 4.8% 117 24.6% 5 121.5 822.4
Single 9,430 95.2% 2,508 26.6% 5 554.6 14939.3
2.2 Art Index Database Statistics
__________________________________
Median session length (minutes:seconds) 5:19
Average session length (minutes:seconds) 7:30
Longest session recorded (minutes:seconds) 32:13
Average number of searches completed per session 2.3
Retrievals per search - median 1.0
Retrievals per search - average 154.4
Retrievals per search - standard deviation 1505.5
Percent of searches completed with 0 results 42.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 125 29.8%
DISPLAY (excluding automatic displays) 126 30.0%
HELP 18 4.3%
EXPLAIN 21 5.0%
SET/RESET 17 4.0%
SHOW 6 1.4%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 83 19.8%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 24 5.7%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.7%
SHORT 82.7%
LONG 9.3%
TAGS 0.7%
FIELDS 0.7%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 2.0%
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 35 27.8% 24 68.6% 11 20.3 24.2
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 42 33.3% 12 28.6% 6 41.0 88.5
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 1 0.8% 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 7 5.6% 2 28.6% 18 80.6 113.9
Other indexes 41 32.5% 15 36.6% 10 670.8 3298.3
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 1 0.8% 1 100% 0 0.0 0.0
Single 124 99.2% 52 41.9% 9 268.0 1981.9
2.3 ArticleFirst Database Statistics
_____________________________________
Median session length (minutes:seconds) 13:09
Average session length (minutes:seconds) 20:53
Longest session recorded (minutes:seconds) 166:30
Average number of searches completed per session 1.6
Retrievals per search - median 2.0
Retrievals per search - average 331.0
Retrievals per search - standard deviation 3571.3
Percent of searches completed with 0 results 35.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 304 38.7%
DISPLAY (excluding automatic displays) 180 22.9%
HELP 3 0.4%
EXPLAIN 4 0.5%
SET/RESET 162 20.6%
SHOW 1 0.1%
ADD ON (AND, OR, AND NOT) 30 3.8%
LOGON or LOGOFF 90 11.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 11 1.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.8%
SHORT 71.2%
LONG 1.8%
TAGS 0.0%
FIELDS 1.4%
PERIODICALS 15.5%
COMMENTS 0.0%
Other 3.2%
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 150 43.5% 66 44.0% 7 851.2 7013.6
EXACT TITLE 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
KEYWORD 17 4.9% 7 41.2% 6 11.1 12.6
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 18 5.2% 5 27.8% 2 23.7 50.3
EXACT PE 4 1.2% 2 50.0% 781 780.5 1101.0
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 156 45.2% 47 30.1% 27 333.3 1075.1
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 40 13.2% 19 47.5% 9 36.3 97.3
Single 264 86.8% 89 33.7% 13 618.7 4922.2
2.4 ContentsFirst Database Statistics
______________________________________
Median session length (minutes:seconds) 4:09
Average session length (minutes:seconds) 13:18
Longest session recorded (minutes:seconds) 41:56
Average number of searches completed per session 0.8
Retrievals per search - median 0.0
Retrievals per search - average 8.4
Retrievals per search - standard deviation 22.5
Percent of searches completed with 0 results 77.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 9 20.0%
DISPLAY (excluding automatic displays) 8 17.8%
HELP 7 15.6%
EXPLAIN 3 6.7%
SET/RESET 11 24.4%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 0 0.0%
LOGON or LOGOFF 5 11.1%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 2 4.4%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 66.7%
SHORT 0.0%
LONG 22.2%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 11.1%
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 40.0% 3 75.0% 8 8.0 0.0
EXACT JOURNAL 3 30.0% 2 66.7% 68 68.0 0.0
KEYWORD 2 20.0% 2 100% 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 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 10.0% 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 11.1% 1 100% 0 0.0 0.0
Single 8 88.9% 6 75.0% 38 38.0 42.4
2.5 PapersFirst Index Database Statistics
__________________________________________
Median session length (minutes:seconds) 20:59
Average session length (minutes:seconds) 19:21
Longest session recorded (minutes:seconds) 34:50
Average number of searches completed per session 1.9
Retrievals per search - median 1.0
Retrievals per search - average 77.4
Retrievals per search - standard deviation 354.0
Percent of searches completed with 0 results 48.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 279 43.1%
DISPLAY (excluding automatic displays) 128 19.8%
HELP 4 0.6%
EXPLAIN 12 1.9%
SET/RESET 143 22.1%
SHOW 4 0.6%
ADD ON (AND, OR, AND NOT) 29 4.5%
LOGON or LOGOFF 39 6.0%
COMMENT 0 0.0%
USE 1 0.2%
OTHER 8 1.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 10.0%
SHORT 63.9%
LONG 1.7%
TAGS 0.0%
FIELDS 10.6%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 9.4%
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 148 43.8% 73 49.3% 10 215.3 583.1
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 158 46.7% 88 55.7% 4 93.6 389.8
EXACT TITLE 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 5 1.5% 4 80.0% 69 69.0 0.0
CONFERENCE 3 0.9% 0 0.0% 136 94.0 72.7
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 1 0.3% 0 0.0% 1 1.0 0.0
EXACT JOURNAL 1 0.3% 1 100% 0 0.0 0.0
DATE 14 4.1% 6 42.9% 3 4.9 3.9
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 8 2.4% 0 0.0% 3 98.4 257.4
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 58 20.8% 37 63.8% 2 5.4 6.4
Single 221 79.2% 98 44.3% 9 192.3 541.5
2.6 ProceedingsFirst Index Database Statistics
_______________________________________________
Median session length (minutes:seconds) 14:06
Average session length (minutes:seconds) 31:09
Longest session recorded (minutes:seconds) 167:22
Average number of searches completed per session 1.3
Retrievals per search - median 1.0
Retrievals per search - average 5.3
Retrievals per search - standard deviation 11.0
Percent of searches completed with 0 results 43.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 47 27.8%
DISPLAY (excluding automatic displays) 68 40.2%
HELP 2 1.2%
EXPLAIN 5 3.0%
SET/RESET 29 17.2%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 1 0.6%
LOGON or LOGOFF 16 9.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 1 0.6%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 57.9%
SHORT 6.6%
LONG 25.0%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 10.5%
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 1 2.1% 0 0.0% 5 5.0 0.0
KEYWORD 6 12.5% 2 33.3% 16 20.5 20.5
CONFERENCE 39 81.3% 17 43.6% 4 7.5 11.5
CONFERENCE PLACE 1 2.1% 0 0.0% 5 5.0 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 0 0.0% 0 0.0% 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 1 2.1% 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 1 2.1% 0 0.0% 5 5.0 0.0
Single 46 97.9% 20 43.5% 4 9.5 13.6
2.7 MLA Bibliography Database Statistics
_________________________________________
Median session length (minutes:seconds) 3:40
Average session length (minutes:seconds) 7:31
Longest session recorded (minutes:seconds) 39:23
Average number of searches completed per session 2.7
Retrievals per search - median 2.0
Retrievals per search - average 88.0
Retrievals per search - standard deviation 731.8
Percent of searches completed with 0 results 34.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 493 35.9%
DISPLAY (excluding automatic displays) 406 29.6%
HELP 36 2.6%
EXPLAIN 44 3.2%
SET/RESET 66 4.8%
SHOW 3 0.2%
ADD ON (AND, OR, AND NOT) 8 0.6%
LOGON or LOGOFF 254 18.5%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 62 4.5%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 5.8%
SHORT 73.1%
LONG 19.8%
TAGS 0.0%
FIELDS 0.4%
PERIODICALS 0.6%
COMMENTS 0.0%
Other 0.4%
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 134 26.1% 52 38.8% 11 403.1 1766.8
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 185 36.1% 72 38.9% 5 39.6 118.4
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 38 7.4% 13 34.2% 9 70.7 198.7
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% 8 36.7 54.0
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 153 29.8% 40 26.1% 8 41.3 131.9
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 19 3.9% 4 21.1% 3 9.3 13.3
Single 473 96.1% 168 35.5% 8 143.4 933.4
2.8 RILM Index Database Statistics
___________________________________
Median session length (minutes:seconds) 2:22
Average session length (minutes:seconds) 3:15
Longest session recorded (minutes:seconds) 15:35
Average number of searches completed per session 2.0
Retrievals per search - median 6.0
Retrievals per search - average 450.6
Retrievals per search - standard deviation 1738.5
Percent of searches completed with 0 results 11.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 31 21.8%
DISPLAY (excluding automatic displays) 63 44.4%
HELP 3 2.1%
EXPLAIN 1 0.7%
SET/RESET 3 2.1%
SHOW 0 0.0%
ADD ON (AND, OR, AND NOT) 5 3.5%
LOGON or LOGOFF 30 21.1%
COMMENT 0 0.0%
USE 0 0.0%
OTHER 6 4.2%
DISPLAY commands, by type, excluding automatic displays:
REVIEW 29.7%
SHORT 63.5%
LONG 5.4%
TAGS 0.0%
FIELDS 0.0%
PERIODICALS 0.0%
COMMENTS 0.0%
Other 1.4%
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 13 36.1% 1 7.7% 5 15.3 21.2
EXACT AUTHOR 0 0.0% 0 0.0% 0 0.0 0.0
TITLE WORD 7 19.4% 0 0.0% 1 3.4 3.5
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 27.8% 1 10.0% 33 1761.3 3262.7
ABSTRACT 0 0.0% 0 0.0% 0 0.0 0.0
SUBJECT 4 11.1% 2 50.0% 42 41.5 34.6
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 2 5.6% 0 0.0% 17 17.0 22.6
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 5 16.1% 0 0.0% 1 7.4 14.3
Single 26 83.9% 4 15.4% 16 732.0 2196.4
3.0 Error, EXPLAIN and HELP statistics (All OCLC-Z39.50 databases)
___________________________________________________________________
Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 30.3%
2. First word of command is invalid 17.4%
3. Z39.50 host cannot process command 14.9%
4. FIND command with invalid index name 6.0%
5. DISPLAY command contains invalid word 5.8%
6. Too many truncated words to process 5.8%
7. PS command - no previous screen 1.9%
8. Search term missing from search command 1.6%
9. Index invalid in current database 1.5%
10. DISPLAY command - no FIND results 1.4%
11. All others 13.5%
Ten most frequent EXPLAIN requests:
1. LOCATE (Z39.50 DBS) 15.5%
2. GUIDE: Z39.50 non-A&I DBS w/o truncation 14.2%
3. GUIDE (Z39.50 A&I DBS w/o truncation) 6.5%
4. GUIDE (ART DB) 5.8%
5. LOCATE (Z39.50 DBS) 5.8%
6. Unrecognized term 5.8%
7. INDEXES (WCAT DB) 3.9%
8. Unrecognized term-reminders off 3.9%
9. DISPLAY (Z39.50 non-A&I DBS) 3.2%
10. COMMANDS (Z39.50 DBS) 3.2%
11. All others 32.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.4%
2. First word of command is invalid 19.9%
3. DISPLAY command-first of >1 screen 6.8%
4. DISPLAY command-complete in one screen 6.4%
5. F/BR with index invalid in current DB 6.4%
6. FIND command with zero results 5.3%
7. NS command - no next screen 3.8%
8. FIND command retrieves 1 book 3.8%
9. FIND command with invalid index name 3.0%
10. DISPLAY command - middle of >1 screen 2.3%
11. All others 18.0%
Ten most frequent SHOW requests:
1. HISTORY 81.4%
2. SEARCH 7.1%
3. GLOSSARY 4.3%
4. SETTINGS (Z39.50 DBS) 2.9%
5. SYSTEM NEWS 1.4%
6. LIBRARY NEWS 1.4%
11. All others 1.4%
OCLmm/dd oclc MELVYL OCLC-Z39.50 DATABASES TELNET STATISTICS (weekly)