MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 09/01/01 through 09/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 236 1,016 1,252
Davis 572 17 589
Irvine 86 0 86
Los Angeles 8 221 229
Riverside 24 192 216
San Diego 38 155 193
San Francisco 90 0 90
Santa Barbara 5 194 199
Santa Cruz 8 67 75
Lawrence Berkeley 0 15 15
Lawrence Livermore 0 22 22
Los Alamos 0 0 0
Other - UC 0 87 87
Other-Network UC n/a 1,832 1,832
_______ ______ _____
1,067 3,818 4,885
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 4,320 12,134 109,481
BIO88 565 1,245 10,338
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 49 191 2,313
2-4 a.m. 20 120 1,840
4-6 a.m. 63 129 1,549
6-8 a.m. 187 427 3,768
8-10 a.m. 649 1,523 16,683
10-12 a.m. 1,041 2,408 25,001
12-2 p.m. 822 2,424 18,386
2-4 p.m. 889 2,511 22,700
4-6 p.m. 688 1,876 15,553
6-8 p.m. 249 881 5,604
8-10 p.m. 137 529 4,194
10-12 p.m. 91 360 2,228
__________ __________ __________ _________________
Total: 4,885 13,379 119,819
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 773 3,205 3,978
Davis 1,896 37 1,933
Irvine 225 0 225
Los Angeles 32 629 661
Riverside 49 541 590
San Diego 187 417 604
San Francisco 423 0 423
Santa Barbara 4 839 843
Santa Cruz 15 177 192
Lawrence Berkeley 0 46 46
Lawrence Livermore 0 44 44
Los Alamos 0 0 0
Other - UC 3 143 146
Other-Network UC n/a 3,694 3,694
_______ ______ _____
3,607 9,772 13,379
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,766 30,151 38,917
Davis 17,485 400 17,885
Irvine 1,131 0 1,131
Los Angeles 231 5,683 5,914
Riverside 244 4,750 4,994
San Diego 595 3,927 4,522
San Francisco 3,156 0 3,156
Santa Barbara 114 6,702 6,816
Santa Cruz 201 1,691 1,892
Lawrence Berkeley 0 487 487
Lawrence Livermore 0 287 287
Los Alamos 0 0 0
Other - UC 0 1,227 1,227
Other-Network UC n/a 32,591 32,591
_______ ______ _____
31,923 87,896 119,819
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 4.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 10:20
Average session length (minutes:seconds) 14:14
Longest session recorded (minutes:seconds) 483:36
Average number of searches completed per session 2.7
Retrievals per search - median 7.0
Retrievals per search - average 721.5
Retrievals per search - standard deviation 7583.9
Percent of searches completed with 0 results 24.6%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 73.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11,571 31.3%
DISPLAY (excluding automatic displays) 12,939 35.0%
BROWSE 1 0.0%
HELP 410 1.1%
EXPLAIN 438 1.2%
SET/RESET 2,673 7.2%
SHOW 114 0.3%
ADD ON (AND, OR, AND NOT) 1,808 4.9%
LOGON or LOGOFF 4,847 13.1%
COMMENT 0 0.0%
SAVE 963 2.6%
USE 8 0.0%
OTHER 1,151 3.1%
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 4,584 34.7% 856 18.7% 20 139.9 574.7
TITLE WORD 2,426 18.3% 998 41.1% 6 734.5 7627.2
EXACT TITLE 128 1.0% 67 52.3% 2 8.5 16.0
KEYWORD 4,001 30.3% 744 18.6% 34 1859.8 12922.9
JOURNAL 514 3.9% 232 45.1% 170 4186.1 20307.9
EXACT JOURNAL 298 2.3% 130 43.6% 338 2430.4 5152.9
SOURCE 3 0.0% 2 66.7% 1 1.0 0.0
CONFERENCE 7 0.1% 6 85.7% 993 993.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 5 0.0% 1 20.0% 4 9.3 13.4
PUBLICATION TYPE 1 0.0% 0 0.0% 14 14.0 0.0
DATE 79 0.6% 16 20.3% 13 129.7 333.9
LANGUAGE 27 0.2% 1 3.7% 5,375 16489.4 21817.0
ADDED 3 0.0% 1 33.3% 20 19.5 3.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 20 0.2% 4 20.0% 22 29.0 25.6
ACCESSION NO. 3 0.0% 3 100% 0 0.0 0.0
ISSN 4 0.0% 3 75.0% 3,246 3246.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 448 3.4% 61 13.6% 5 253.4 2490.2
EXACT PE 124 0.9% 11 8.9% 3 32.9 167.3
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 550 4.2% 114 20.7% 11 787.1 3678.0
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 1,609 14.0% 464 28.8% 5 505.1 4114.2
Single 9,872 86.0% 2,275 23.0% 28 1163.7 9870.5
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
CONCEPT CODES 1 100% 1 100% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 87.0%
LONG 1.2%
TAGS 0.3%
FIELDS 1.8%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.5%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.9%
Ten most frequent errors:
1. NS command - no next screen 32.0%
2. First word of command is invalid 31.1%
3. FIND command with invalid index name 9.7%
4. PS command - no previous screen 3.9%
5. DISPLAY command contains invalid word 3.0%
6. Search term missing from search command 2.8%
7. DATE search with unrecognized word 1.9%
8. Valid command at an inappropriate time 1.3%
9. Index invalid in current database 1.2%
10. Max. # of ports to a Z39 db are in use 1.1%
11. All others 12.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 24.7%
2. GUIDE 15.3%
3. FIND 8.7%
4. INDEXES 8.4%
5. BIOSIS DATABASE 6.6%
6. COMMANDS 4.3%
7. Unrecognized term 3.7%
8. ADDON SEARCH 3.7%
9. DATABASES 3.4%
10. DISPLAY 2.3%
11. All others 18.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.2%
2. First word of command is invalid 15.6%
3. DISPLAY command-first of >1 screen 9.9%
4. FIND command with invalid index name 9.2%
5. FIND command retrieves >1 book 4.6%
6. DISPLAY command - middle of >1 screen 4.5%
7. DISPLAY command - last of >1 screen 4.4%
8. FIND command with zero results 4.1%
9. DISPLAY command-complete in one screen 2.9%
10. NS command - no next screen 2.7%
11. All others 20.9%
Ten most frequent SHOW requests:
1. HISTORY 58.1%
2. SEARCH 16.1%
3. SETTINGS 6.5%
4. BIOSIS NEWS 4.3%
5. MAIL STATUS 4.3%
6. GLOSSARY 3.2%
7. TIMEOUT SETTING 2.2%
8. 0408 1.1%
9. SYSTEM NEWS 1.1%
10. MAIL SETTINGS 1.1%
11. All others 2.2%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)