MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/01/99 through 03/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,538 4,223 7,761
Davis 2,837 268 3,105
Irvine 893 0 893
Los Angeles 842 755 1,597
Riverside 652 535 1,187
San Diego 116 1,806 1,922
San Francisco 577 35 612
Santa Barbara 616 427 1,043
Santa Cruz 792 355 1,147
Lawrence Berkeley 0 50 50
Lawrence Livermore 0 59 59
Los Alamos 0 0 0
Other - UC 38 292 330
Other-Network UC n/a 2,426 2,426
_______ ______ _____
10,901 11,231 22,132
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 20,217 72,720 739,957
BIO88 1,915 5,251 44,574
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 244 807 7,497
2-4 a.m. 87 289 3,500
4-6 a.m. 122 391 2,871
6-8 a.m. 304 1,010 9,765
8-10 a.m. 2,052 6,203 59,727
10-12 a.m. 3,872 13,299 124,941
12-2 p.m. 4,112 14,141 139,372
2-4 p.m. 4,568 16,295 163,015
4-6 p.m. 3,371 12,552 121,685
6-8 p.m. 1,693 6,365 60,381
8-10 p.m. 1,002 4,100 62,101
10-12 p.m. 705 2,519 29,676
__________ __________ __________ _________________
Total: 22,132 77,971 784,531
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 16,569 14,942 31,511
Davis 10,087 1,145 11,232
Irvine 3,691 0 3,691
Los Angeles 3,069 2,565 5,634
Riverside 2,067 1,871 3,938
San Diego 391 3,034 3,425
San Francisco 2,056 122 2,178
Santa Barbara 2,708 1,397 4,105
Santa Cruz 3,267 1,183 4,450
Lawrence Berkeley 0 126 126
Lawrence Livermore 0 89 89
Los Alamos 0 0 0
Other - UC 29 677 706
Other-Network UC n/a 6,886 6,886
_______ ______ _____
43,934 34,037 77,971
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 164,992 175,852 340,844
Davis 119,264 10,094 129,358
Irvine 31,319 0 31,319
Los Angeles 34,629 26,777 61,406
Riverside 14,741 21,727 36,468
San Diego 2,392 18,574 20,966
San Francisco 17,970 6,797 24,767
Santa Barbara 25,135 13,589 38,724
Santa Cruz 21,845 11,885 33,730
Lawrence Berkeley 0 1,915 1,915
Lawrence Livermore 0 1,297 1,297
Los Alamos 0 0 0
Other - UC 126 4,435 4,561
Other-Network UC n/a 59,176 59,176
_______ ______ _____
432,413 352,118 784,531
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.5
Standard deviation in seconds 6.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:40
Average session length (minutes:seconds) 13:07
Longest session recorded (minutes:seconds) 1103
Average number of searches completed per session 3.5
Retrievals per search - median 11.0
Retrievals per search - average 1047.9
Retrievals per search - standard deviation 12146
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 0.7%
Percent of long searches completed
(includes partial results) 37.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 70,029 29.4%
DISPLAY (excluding automatic displays) 95,529 40.2%
BROWSE 27 0.0%
HELP 4,012 1.7%
EXPLAIN 4,013 1.7%
SET/RESET 8,542 3.6%
SHOW 972 0.4%
ADD ON (AND, OR, AND NOT) 7,942 3.3%
LOGON or LOGOFF 29,311 12.3%
COMMENT 2 0.0%
SAVE 7,265 3.1%
USE 151 0.1%
OTHER 10,148 4.3%
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 19,564 25.9% 3,909 20.0% 19 146.8 649.5
TITLE WORD 9,713 12.8% 3,455 35.6% 13 866.9 9674.8
EXACT TITLE 770 1.0% 464 60.3% 2 229.6 1715.1
KEYWORD 36,073 47.7% 6,756 18.7% 36 1954.4 17992.1
JOURNAL 2,696 3.6% 1,056 39.2% 488 4194.1 13394.0
EXACT JOURNAL 1,154 1.5% 387 33.5% 792 2850.9 5199.5
SOURCE 59 0.1% 31 52.5% 97 536.2 710.3
CONFERENCE 5 0.0% 0 0.0% 137 2856.0 6136.5
BIOSYS NAMES 70 0.1% 44 62.9% 50 2241.0 4733.6
BIOSYS CODES 43 0.1% 0 0.0% 329 5712.7 17011.6
SUPERTAXA 199 0.3% 34 17.1% 29 165.0 487.4
MAJ CONCEPT CDES 9 0.0% 0 0.0% 67 12616.8 26342.0
CONCEPT CODES 88 0.1% 5 5.7% 117 11054.5 23884.0
PUBLICATION TYPE 521 0.7% 65 12.5% 22 213.3 684.7
DATE 1,280 1.7% 235 18.4% 11 157.6 623.3
LANGUAGE 366 0.5% 77 21.0% 19 284.1 1860.1
ADDED 10 0.0% 4 40.0% 13 13.8 6.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 241 0.3% 56 23.2% 25 4560.5 28396.7
ACCESSION NO. 16 0.0% 11 68.8% 1 1.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 5 0.0% 1 20.0% 14 40.8 63.3
PERIODICAL 2,183 2.9% 507 23.2% 7 520.1 3567.9
EXACT PE 359 0.5% 77 21.4% 5 124.3 345.0
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 2 0.0% 1 50.0% 4,066 4066.0 0.0
Other indexes 188 0.2% 34 18.1% 62 536.1 1312.7
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 5,589 8.0% 1,536 27.5% 7 308.6 5051.0
Single 63,921 92.0% 13,991 21.9% 31 1505.5 14490.3
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 27 100% 12 44.4% 4 10.7 14.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 89.3%
LONG 1.3%
TAGS 0.4%
FIELDS 0.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.1%
COMMENTS 0.0%
Other 3.4%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 11.7%
Ten most frequent errors:
1. NS command - no next screen 31.8%
2. First word of command is invalid 31.2%
3. FIND command with invalid index name 9.7%
4. PS command - no previous screen 5.4%
5. DISPLAY command contains invalid word 4.3%
6. Valid command at an inappropriate time 2.2%
7. Search term missing from search command 1.6%
8. DISPLAY command-record numbers too large 1.2%
9. DATE search with unrecognized word 1.1%
10. Index invalid in current database 1.0%
11. All others 10.5%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 25.6%
2. GUIDE 15.4%
3. FIND 9.4%
4. COMMANDS 6.9%
5. INDEXES 6.0%
6. Unrecognized term 4.9%
7. DISPLAY 3.3%
8. ADDON SEARCH 3.2%
9. MAIL 3.2%
10. BIOSIS DATABASE 2.3%
11. All others 19.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.6%
2. First word of command is invalid 14.4%
3. FIND command with invalid index name 7.9%
4. DISPLAY command-first of >1 screen 7.2%
5. DISPLAY command - middle of >1 screen 5.7%
6. DISPLAY command-complete in one screen 5.6%
7. FIND command retrieves >1 book 5.2%
8. DISPLAY command - last of >1 screen 4.0%
9. FIND command with zero results 4.0%
10. PS command - no previous screen 2.5%
11. All others 23.7%
Ten most frequent SHOW requests:
1. HISTORY 42.4%
2. SEARCH 24.8%
3. MAIL STATUS 15.9%
4. SETTINGS 3.0%
5. GLOSSARY 3.0%
6. BIOSIS NEWS 2.1%
7. MAIL SETTINGS 2.1%
8. SYSTEM1 NEWS 1.2%
9. SYSTEM NEWS 0.7%
10. DISPLAY 0.7%
11. All others 4.0%