MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/02/02 through 03/08/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 75 309 384
Davis 272 1 273
Irvine 21 0 21
Los Angeles 0 72 72
Riverside 11 12 23
San Diego 20 34 54
San Francisco 36 0 36
Santa Barbara 0 18 18
Santa Cruz 0 7 7
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 2 22 24
Other-Network UC n/a 410 410
_______ ______ _____
437 895 1,332
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,161 4,016 36,061
BIO88 171 434 2,363
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 20 76
2-4 a.m. 18 32 405
4-6 a.m. 15 68 280
6-8 a.m. 28 71 565
8-10 a.m. 183 604 4,413
10-12 a.m. 311 1,012 9,779
12-2 p.m. 238 774 5,937
2-4 p.m. 248 854 7,854
4-6 p.m. 152 579 5,314
6-8 p.m. 79 226 1,997
8-10 p.m. 38 136 1,330
10-12 p.m. 15 74 474
__________ __________ __________ _________________
Total: 1,332 4,450 38,424
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 209 1,291 1,500
Davis 1,025 1 1,026
Irvine 149 0 149
Los Angeles 0 182 182
Riverside 19 19 38
San Diego 95 94 189
San Francisco 190 0 190
Santa Barbara 0 70 70
Santa Cruz 0 21 21
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 36 36
Los Alamos 0 0 0
Other - UC 6 51 57
Other-Network UC n/a 989 989
_______ ______ _____
1,693 2,757 4,450
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,870 15,971 17,841
Davis 8,224 0 8,224
Irvine 1,000 0 1,000
Los Angeles 0 1,335 1,335
Riverside 149 208 357
San Diego 397 1,431 1,828
San Francisco 1,414 0 1,414
Santa Barbara 0 522 522
Santa Cruz 0 65 65
Lawrence Berkeley 0 9 9
Lawrence Livermore 0 449 449
Los Alamos 0 0 0
Other - UC 89 364 453
Other-Network UC n/a 4,927 4,927
_______ ______ _____
13,143 25,281 38,424
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 4.5
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) 10:52
Average session length (minutes:seconds) 15:17
Longest session recorded (minutes:seconds) 398:02
Average number of searches completed per session 3.3
Retrievals per search - median 9.0
Retrievals per search - average 1275.7
Retrievals per search - standard deviation 8866.2
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 57.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,767 30.3%
DISPLAY (excluding automatic displays) 4,769 38.4%
BROWSE 0 0.0%
HELP 168 1.4%
EXPLAIN 166 1.3%
SET/RESET 665 5.3%
SHOW 39 0.3%
ADD ON (AND, OR, AND NOT) 683 5.5%
LOGON or LOGOFF 1,475 11.9%
COMMENT 0 0.0%
SAVE 336 2.7%
USE 1 0.0%
OTHER 363 2.9%
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 1,314 31.6% 283 21.5% 19 149.5 585.7
TITLE WORD 680 16.4% 260 38.2% 10 442.2 2507.2
EXACT TITLE 30 0.7% 16 53.3% 2 9.1 13.0
KEYWORD 1,577 38.0% 304 19.3% 33 2329.2 13522.6
JOURNAL 156 3.8% 52 33.3% 805 4266.5 20215.4
EXACT JOURNAL 62 1.5% 19 30.6% 1,080 3545.2 7849.9
SOURCE 1 0.0% 1 100% 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 6 0.1% 2 33.3% 29 118.8 199.0
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 4 0.1% 1 25.0% 54 157.7 224.3
PUBLICATION TYPE 1 0.0% 1 100% 0 0.0 0.0
DATE 16 0.4% 2 12.5% 8 15.7 23.4
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 15 0.4% 5 33.3% 29 316.6 899.8
ACCESSION NO. 4 0.1% 0 0.0% 1 1.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 128 3.1% 19 14.8% 4 26.3 127.6
EXACT PE 52 1.3% 3 5.8% 3 31.9 180.6
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 105 2.5% 24 22.9% 7 1954.0 16732.1
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 405 10.9% 132 32.6% 4 37.2 160.2
Single 3,324 89.1% 720 21.7% 33 1554.5 10844.5
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 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 83.6%
LONG 1.3%
TAGS 0.7%
FIELDS 5.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. NS command - no next screen 33.3%
2. First word of command is invalid 28.3%
3. FIND command with invalid index name 10.3%
4. PS command - no previous screen 4.6%
5. Search term missing from search command 3.1%
6. DATE search with unrecognized word 2.9%
7. DISPLAY command contains invalid word 2.6%
8. DISPLAY command - no FIND results 2.5%
9. Valid command at an inappropriate time 2.2%
10. NS of SHOW/EXP command-no next screen 1.3%
11. All others 9.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 24.1%
2. GUIDE 18.1%
3. FIND 7.8%
4. Unrecognized term 7.2%
5. COMMANDS 5.4%
6. BIOSIS DATABASE 4.8%
7. INDEXES 3.6%
8. DISPLAY 3.6%
9. MAIL 3.6%
10. ADDON SEARCH 2.4%
11. All others 19.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.4%
2. First word of command is invalid 14.4%
3. FIND command with invalid index name 9.6%
4. DISPLAY command-first of >1 screen 8.7%
5. DISPLAY command - middle of >1 screen 6.0%
6. FIND command retrieves >1 book 5.7%
7. FIND command with zero results 4.2%
8. DISPLAY command - last of >1 screen 3.6%
9. NS of SHOW/EXP command-no next screen 3.0%
10. NS command - no next screen 2.4%
11. All others 19.2%
Ten most frequent SHOW requests:
1. HISTORY 51.4%
2. SEARCH 24.3%
3. MAIL STATUS 8.1%
4. PUBLICATION TYPES 2.7%
5. BIOSIS NEWS 2.7%
6. UCB LIBRARY HOURS 2.7%
7. GLOSSARY 2.7%
8. SYSTEM NEWS 2.7%
9. TIMEOUT SETTING 2.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)