MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/01/02 through 06/30/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 74 670 744
Davis 408 12 420
Irvine 110 0 110
Los Angeles 6 262 268
Riverside 7 110 117
San Diego 66 206 272
San Francisco 113 0 113
Santa Barbara 1 53 54
Santa Cruz 6 89 95
Lawrence Berkeley 0 23 23
Lawrence Livermore 0 18 18
Los Alamos 0 0 0
Other - UC 6 130 136
Other-Network UC n/a 730 730
_______ ______ _____
797 2,303 3,100
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 2,785 8,667 84,578
BIO88 315 781 4,667
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 27 148 1,091
2-4 a.m. 39 45 280
4-6 a.m. 16 45 545
6-8 a.m. 71 275 2,802
8-10 a.m. 337 956 7,845
10-12 a.m. 563 1,612 14,654
12-2 p.m. 548 1,662 16,403
2-4 p.m. 665 1,942 17,522
4-6 p.m. 538 1,670 16,256
6-8 p.m. 166 603 6,293
8-10 p.m. 69 268 2,782
10-12 p.m. 61 222 2,772
__________ __________ __________ _________________
Total: 3,100 9,448 89,245
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 229 2,181 2,410
Davis 1,464 21 1,485
Irvine 467 0 467
Los Angeles 35 892 927
Riverside 25 304 329
San Diego 134 604 738
San Francisco 445 0 445
Santa Barbara 2 256 258
Santa Cruz 16 271 287
Lawrence Berkeley 0 43 43
Lawrence Livermore 0 58 58
Los Alamos 0 0 0
Other - UC 11 350 361
Other-Network UC n/a 1,640 1,640
_______ ______ _____
2,828 6,620 9,448
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,127 23,530 25,657
Davis 12,213 92 12,305
Irvine 4,656 0 4,656
Los Angeles 1,287 8,781 10,068
Riverside 23 3,714 3,737
San Diego 1,619 5,488 7,107
San Francisco 2,460 0 2,460
Santa Barbara 2 3,822 3,824
Santa Cruz 70 4,165 4,235
Lawrence Berkeley 0 270 270
Lawrence Livermore 0 544 544
Los Alamos 0 0 0
Other - UC 77 3,461 3,538
Other-Network UC n/a 10,844 10,844
_______ ______ _____
24,534 64,711 89,245
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 4.6
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) 9:01
Average session length (minutes:seconds) 13:59
Longest session recorded (minutes:seconds) 328:09
Average number of searches completed per session 3.0
Retrievals per search - median 8.5
Retrievals per search - average 1174.9
Retrievals per search - standard deviation 11195
Percent of searches completed with 0 results 22.5%
Percent of searches entered that are long 2.0%
Percent of long searches completed
(includes partial results) 73.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 8,178 30.4%
DISPLAY (excluding automatic displays) 10,130 37.6%
BROWSE 0 0.0%
HELP 263 1.0%
EXPLAIN 273 1.0%
SET/RESET 1,303 4.8%
SHOW 59 0.2%
ADD ON (AND, OR, AND NOT) 1,270 4.7%
LOGON or LOGOFF 3,944 14.6%
COMMENT 0 0.0%
SAVE 579 2.1%
USE 4 0.0%
OTHER 937 3.5%
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 2,947 32.5% 610 20.7% 22 153.0 635.4
TITLE WORD 1,350 14.9% 506 37.5% 8 514.9 3039.0
EXACT TITLE 54 0.6% 24 44.4% 2 63.9 169.1
KEYWORD 3,429 37.8% 661 19.3% 35 2877.9 18840.3
JOURNAL 270 3.0% 122 45.2% 367 9054.8 29280.3
EXACT JOURNAL 171 1.9% 92 53.8% 920 3465.2 5752.3
SOURCE 2 0.0% 2 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 3 0.0% 0 0.0% 19 14.0 8.7
SUPERTAXA 3 0.0% 0 0.0% 14 13.7 4.5
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 9 9.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 33 0.4% 5 15.2% 5 36.0 90.1
LANGUAGE 10 0.1% 1 10.0% 261 608.8 780.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 3 0.0% 0 0.0% 86 304.7 387.4
AUTHOR AFFIL. 32 0.4% 11 34.4% 18 378.6 1022.6
ACCESSION NO. 2 0.0% 2 100% 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 384 4.2% 44 11.5% 4 332.4 3140.8
EXACT PE 132 1.5% 8 6.1% 3 5.9 9.1
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 254 2.8% 62 24.4% 10 104.7 399.7
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 912 11.2% 309 33.9% 6 114.0 835.1
Single 7,203 88.8% 1,508 20.9% 28 1823.6 14146.1
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 3.2%
SHORT 85.9%
LONG 1.4%
TAGS 0.4%
FIELDS 1.5%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.1%
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 34.8%
2. First word of command is invalid 27.2%
3. FIND command with invalid index name 7.9%
4. DISPLAY command - no FIND results 4.7%
5. DATE search with unrecognized word 4.0%
6. DISPLAY command contains invalid word 3.6%
7. PS command - no previous screen 3.5%
8. Search term missing from search command 1.8%
9. Valid command at an inappropriate time 1.4%
10. Index invalid in current database 1.3%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.0%
2. LOCATE (BIO DB) 14.3%
3. FIND 9.5%
4. BIOSIS DATABASE 6.6%
5. COMMANDS 6.2%
6. INDEXES 4.8%
7. Unrecognized term 4.4%
8. DISPLAY 2.9%
9. ADDON SEARCH 2.6%
10. SUPERTAXA 1.8%
11. All others 20.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.1%
2. First word of command is invalid 14.7%
3. FIND command with invalid index name 8.6%
4. DISPLAY command-first of >1 screen 6.9%
5. FIND command with zero results 5.4%
6. DISPLAY command - middle of >1 screen 4.3%
7. FIND command retrieves >1 book 3.9%
8. NS command - no next screen 3.0%
9. DISPLAY command-complete in one screen 2.8%
10. DISPLAY command - last of >1 screen 2.2%
11. All others 19.0%
Ten most frequent SHOW requests:
1. HISTORY 56.9%
2. SEARCH 13.7%
3. SYSTEM NEWS 7.8%
4. SETTINGS 5.9%
5. GLOSSARY 5.9%
6. SUPERTAXA HIERARCHICAL TABLE 3.9%
7. BIOSIS NEWS 2.0%
8. DISEASE INDEX 2.0%
9. MAIL STATUS 2.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)