MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/01/00 through 04/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,117 1,943 4,060
Davis 1,054 70 1,124
Irvine 334 0 334
Los Angeles 255 208 463
Riverside 186 203 389
San Diego 74 257 331
San Francisco 282 0 282
Santa Barbara 146 165 311
Santa Cruz 279 361 640
Lawrence Berkeley 0 68 68
Lawrence Livermore 0 37 37
Los Alamos 0 0 0
Other - UC 14 259 273
Other-Network UC n/a 1,669 1,669
_______ ______ _____
4,741 5,240 9,981
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 8,940 30,941 306,365
BIO88 1,041 2,497 17,777
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 76 252 3,325
2-4 a.m. 41 117 1,281
4-6 a.m. 66 184 1,869
6-8 a.m. 167 483 7,433
8-10 a.m. 836 2,249 17,967
10-12 a.m. 1,713 5,375 45,340
12-2 p.m. 1,770 6,142 61,205
2-4 p.m. 2,268 7,605 75,720
4-6 p.m. 1,590 5,544 53,423
6-8 p.m. 698 2,611 26,828
8-10 p.m. 496 1,956 19,776
10-12 p.m. 260 920 9,975
__________ __________ __________ _________________
Total: 9,981 33,438 324,142
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 8,895 6,437 15,332
Davis 3,761 331 4,092
Irvine 1,319 0 1,319
Los Angeles 637 528 1,165
Riverside 607 570 1,177
San Diego 335 677 1,012
San Francisco 825 0 825
Santa Barbara 934 472 1,406
Santa Cruz 1,166 1,115 2,281
Lawrence Berkeley 0 201 201
Lawrence Livermore 0 131 131
Los Alamos 0 0 0
Other - UC 25 647 672
Other-Network UC n/a 3,825 3,825
_______ ______ _____
18,504 14,934 33,438
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 100,161 64,762 164,923
Davis 39,769 1,485 41,254
Irvine 11,727 0 11,727
Los Angeles 4,265 5,630 9,895
Riverside 5,300 5,568 10,868
San Diego 1,465 6,700 8,165
San Francisco 3,514 0 3,514
Santa Barbara 7,227 4,554 11,781
Santa Cruz 6,415 12,037 18,452
Lawrence Berkeley 0 1,178 1,178
Lawrence Livermore 0 1,846 1,846
Los Alamos 0 0 0
Other - UC 1,640 7,795 9,435
Other-Network UC n/a 31,104 31,104
_______ ______ _____
181,483 142,659 324,142
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 5.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 7:48
Average session length (minutes:seconds) 13:36
Longest session recorded (minutes:seconds) 802:54
Average number of searches completed per session 3.3
Retrievals per search - median 11.0
Retrievals per search - average 1263.5
Retrievals per search - standard deviation 17971
Percent of searches completed with 0 results 22.5%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 45.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 29,894 29.8%
DISPLAY (excluding automatic displays) 39,042 38.9%
BROWSE 0 0.0%
HELP 1,978 2.0%
EXPLAIN 1,860 1.9%
SET/RESET 3,908 3.9%
SHOW 442 0.4%
ADD ON (AND, OR, AND NOT) 3,544 3.5%
LOGON or LOGOFF 12,780 12.7%
COMMENT 0 0.0%
SAVE 3,185 3.2%
USE 26 0.0%
OTHER 3,764 3.7%
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 8,644 26.8% 1,676 19.4% 22 139.5 502.5
TITLE WORD 4,624 14.4% 1,664 36.0% 13 730.1 10040.8
EXACT TITLE 295 0.9% 176 59.7% 1 26.4 126.0
KEYWORD 14,418 44.8% 2,551 17.7% 36 2357.0 28413.1
JOURNAL 1,541 4.8% 673 43.7% 509 7438.7 25375.2
EXACT JOURNAL 622 1.9% 240 38.6% 946 3277.3 7795.9
SOURCE 10 0.0% 10 100% 0 0.0 0.0
CONFERENCE 7 0.0% 3 42.9% 4,823 7718.5 9503.5
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 3 0.0% 0 0.0% 219 252.7 188.8
SUPERTAXA 12 0.0% 0 0.0% 20 815.4 2709.3
MAJ CONCEPT CDES 4 0.0% 0 0.0% 1,617 23819.5 45434.3
CONCEPT CODES 6 0.0% 0 0.0% 942 5521.8 11615.2
PUBLICATION TYPE 6 0.0% 1 16.7% 4 5.2 3.8
DATE 120 0.4% 24 20.0% 8 40.8 129.0
LANGUAGE 51 0.2% 9 17.6% 16 166.0 503.1
ADDED 2 0.0% 0 0.0% 16 16.0 2.8
ARTICLE 4 0.0% 0 0.0% 363 2153.0 3796.5
AUTHOR AFFIL. 124 0.4% 24 19.4% 26 206.3 872.0
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 6 0.0% 4 66.7% 17 17.0 4.2
PERIODICAL 784 2.4% 170 21.7% 5 238.3 1619.0
EXACT PE 126 0.4% 13 10.3% 5 21.4 114.7
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 788 2.4% 137 17.4% 22 2987.3 20609.7
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 2,507 8.5% 729 29.1% 7 571.1 11957.9
Single 27,063 91.5% 5,886 21.7% 34 1845.6 22046.8
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 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 91.2%
LONG 1.0%
TAGS 0.2%
FIELDS 1.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.8%
COMMENTS 0.0%
Other 2.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.8%
Ten most frequent errors:
1. First word of command is invalid 31.9%
2. NS command - no next screen 29.5%
3. FIND command with invalid index name 10.5%
4. PS command - no previous screen 5.7%
5. DISPLAY command contains invalid word 3.5%
6. Valid command at an inappropriate time 2.3%
7. Search term missing from search command 2.0%
8. Index invalid in current database 1.5%
9. NS of SHOW/EXP command-no next screen 1.2%
10. DATE search with unrecognized word 0.9%
11. All others 10.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 30.2%
2. GUIDE 15.8%
3. FIND 9.4%
4. COMMANDS 7.2%
5. INDEXES 5.6%
6. Unrecognized term 5.3%
7. ADDON SEARCH 3.4%
8. BIOSIS DATABASE 2.6%
9. DISPLAY 2.1%
10. MAIL 1.7%
11. All others 16.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.9%
2. First word of command is invalid 14.7%
3. FIND command with invalid index name 10.6%
4. DISPLAY command-first of >1 screen 9.1%
5. DISPLAY command - middle of >1 screen 5.2%
6. FIND command with zero results 5.0%
7. FIND command retrieves >1 book 5.0%
8. DISPLAY command-complete in one screen 4.5%
9. DISPLAY command - last of >1 screen 4.3%
10. NS command - no next screen 2.6%
11. All others 20.2%
Ten most frequent SHOW requests:
1. HISTORY 44.7%
2. SEARCH 33.3%
3. MAIL STATUS 3.8%
4. GLOSSARY 2.6%
5. BIOSIS NEWS 2.2%
6. MAIL SETTINGS 2.2%
7. SETTINGS 1.7%
8. B902 1.4%
9. BIOSYSTEMATIC CODES 1.2%
10. DISPLAY 1.2%
11. All others 5.7%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)