MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/05/01 through 05/11/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 111 234 345
Davis 142 3 145
Irvine 33 0 33
Los Angeles 2 44 46
Riverside 8 21 29
San Diego 21 71 92
San Francisco 49 0 49
Santa Barbara 6 14 20
Santa Cruz 14 53 67
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 0 16 16
Other-Network UC n/a 410 410
_______ ______ _____
386 877 1,263
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,122 3,621 38,233
BIO88 141 276 6,032
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 28 479
2-4 a.m. 8 27 374
4-6 a.m. 14 24 110
6-8 a.m. 26 55 443
8-10 a.m. 138 348 3,123
10-12 a.m. 231 624 5,085
12-2 p.m. 224 740 7,890
2-4 p.m. 246 837 6,971
4-6 p.m. 199 626 14,452
6-8 p.m. 91 327 3,004
8-10 p.m. 47 153 1,361
10-12 p.m. 30 108 973
__________ __________ __________ _________________
Total: 1,263 3,897 44,265
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 420 811 1,231
Davis 563 3 566
Irvine 95 0 95
Los Angeles 2 156 158
Riverside 11 47 58
San Diego 115 252 367
San Francisco 148 0 148
Santa Barbara 9 51 60
Santa Cruz 36 172 208
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 23 23
Los Alamos 0 0 0
Other - UC 0 38 38
Other-Network UC n/a 940 940
_______ ______ _____
1,399 2,498 3,897
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,629 8,717 12,346
Davis 14,615 3 14,618
Irvine 1,248 0 1,248
Los Angeles 2 1,397 1,399
Riverside 41 629 670
San Diego 307 2,117 2,424
San Francisco 1,518 0 1,518
Santa Barbara 11 447 458
Santa Cruz 171 1,849 2,020
Lawrence Berkeley 0 30 30
Lawrence Livermore 0 434 434
Los Alamos 0 0 0
Other - UC 0 197 197
Other-Network UC n/a 6,903 6,903
_______ ______ _____
21,542 22,723 44,265
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 5.0
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) 10:50
Average session length (minutes:seconds) 15:01
Longest session recorded (minutes:seconds) 328:19
Average number of searches completed per session 3.1
Retrievals per search - median 10.0
Retrievals per search - average 1456.9
Retrievals per search - standard deviation 13316
Percent of searches completed with 0 results 22.4%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 60.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,351 30.8%
DISPLAY (excluding automatic displays) 4,237 38.9%
BROWSE 0 0.0%
HELP 97 0.9%
EXPLAIN 91 0.8%
SET/RESET 625 5.7%
SHOW 21 0.2%
ADD ON (AND, OR, AND NOT) 546 5.0%
LOGON or LOGOFF 1,377 12.6%
COMMENT 0 0.0%
SAVE 222 2.0%
USE 2 0.0%
OTHER 324 3.0%
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 1,196 32.0% 280 23.4% 21 145.6 562.4
TITLE WORD 595 15.9% 226 38.0% 6 1647.3 15005.7
EXACT TITLE 9 0.2% 7 77.8% 2 2.0 1.4
KEYWORD 1,331 35.6% 203 15.3% 35 3011.8 20546.3
JOURNAL 206 5.5% 89 43.2% 25 6118.7 29583.7
EXACT JOURNAL 70 1.9% 26 37.1% 2,137 7818.0 9068.0
SOURCE 2 0.1% 0 0.0% 1 1.0 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 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 1 0.0% 0 0.0% 2 2.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 2 2.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 8 0.2% 2 25.0% 23 668.0 1565.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 2 0.1% 0 0.0% 10 9.5 10.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 6 0.2% 1 16.7% 22 22.4 20.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.1% 2 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 168 4.5% 28 16.7% 4 61.3 400.1
EXACT PE 57 1.5% 3 5.3% 4 14.8 55.6
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 86 2.3% 28 32.6% 6 280.6 1215.1
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 384 11.6% 132 34.4% 5 43.4 259.0
Single 2,934 88.4% 609 20.8% 28 2239.3 16988.5
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 2.2%
SHORT 85.4%
LONG 1.0%
TAGS 0.2%
FIELDS 2.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.8%
COMMENTS 0.0%
Other 1.4%
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 34.4%
2. First word of command is invalid 26.7%
3. FIND command with invalid index name 9.1%
4. PS command - no previous screen 4.6%
5. DISPLAY command contains invalid word 4.3%
6. DATE search with unrecognized word 3.3%
7. Index invalid in current database 1.8%
8. Max. # of ports to a Z39 db are in use 1.6%
9. Valid command at an inappropriate time 1.2%
10. Search term missing from search command 1.1%
11. All others 12.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.9%
2. LOCATE (BIO DB) 15.4%
3. COMMANDS 11.0%
4. BIOSIS DATABASE 7.7%
5. FIND 7.7%
6. INDEXES 6.6%
7. Unrecognized term 5.5%
8. DATABASES 4.4%
9. B342 2.2%
10. BIOSIS BACKFILES 2.2%
11. All others 16.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.8%
2. First word of command is invalid 11.7%
3. FIND command with invalid index name 5.3%
4. DISPLAY command-first of >1 screen 5.3%
5. FIND command retrieves >1 book 4.8%
6. DISPLAY command - middle of >1 screen 4.8%
7. FIND command with zero results 4.3%
8. 117 3.7%
9. DISPLAY command-complete in one screen 3.2%
10. NS command - no next screen 2.7%
11. All others 24.5%
Ten most frequent SHOW requests:
1. HISTORY 35.3%
2. SEARCH 23.5%
3. SETTINGS 5.9%
4. BIOSIS NEWS 5.9%
5. LOCATION 5.9%
6. SYSTEM NEWS 5.9%
7. SYSTEM5 NEWS 5.9%
8. MAIL STATUS 5.9%
9. DATABASES 5.9%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)