MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/14/01 through 04/20/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 278 296 574
Davis 139 7 146
Irvine 14 0 14
Los Angeles 2 65 67
Riverside 13 35 48
San Diego 19 60 79
San Francisco 58 0 58
Santa Barbara 4 53 57
Santa Cruz 14 36 50
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 0 23 23
Other-Network UC n/a 462 462
_______ ______ _____
541 1,046 1,587
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,392 4,970 48,362
BIO88 195 436 2,561
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 40 133 878
2-4 a.m. 2 18 40
4-6 a.m. 7 16 152
6-8 a.m. 29 133 1,209
8-10 a.m. 135 381 3,558
10-12 a.m. 248 667 6,340
12-2 p.m. 279 836 6,506
2-4 p.m. 275 952 9,825
4-6 p.m. 266 1,021 11,083
6-8 p.m. 144 578 4,906
8-10 p.m. 124 480 3,961
10-12 p.m. 38 191 2,465
__________ __________ __________ _________________
Total: 1,587 5,406 50,923
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 1,296 1,175 2,471
Davis 540 11 551
Irvine 44 0 44
Los Angeles 2 215 217
Riverside 72 123 195
San Diego 67 142 209
San Francisco 199 0 199
Santa Barbara 10 188 198
Santa Cruz 66 147 213
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 16 16
Los Alamos 0 0 0
Other - UC 0 40 40
Other-Network UC n/a 1,051 1,051
_______ ______ _____
2,296 3,110 5,406
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 14,778 13,456 28,234
Davis 5,159 39 5,198
Irvine 418 0 418
Los Angeles 6 2,323 2,329
Riverside 648 891 1,539
San Diego 316 1,403 1,719
San Francisco 1,103 0 1,103
Santa Barbara 53 1,981 2,034
Santa Cruz 207 1,250 1,457
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 144 144
Los Alamos 0 0 0
Other - UC 0 251 251
Other-Network UC n/a 6,486 6,486
_______ ______ _____
22,688 28,235 50,923
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 5.1
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
_________________________________________
Median session length (minutes:seconds) 9:41
Average session length (minutes:seconds) 14:56
Longest session recorded (minutes:seconds) 225:00
Average number of searches completed per session 3.4
Retrievals per search - median 9.0
Retrievals per search - average 854.4
Retrievals per search - standard deviation 7798.3
Percent of searches completed with 0 results 21.9%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 67.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,808 30.4%
DISPLAY (excluding automatic displays) 6,199 39.2%
BROWSE 0 0.0%
HELP 313 2.0%
EXPLAIN 316 2.0%
SET/RESET 765 4.8%
SHOW 86 0.5%
ADD ON (AND, OR, AND NOT) 598 3.8%
LOGON or LOGOFF 1,762 11.1%
COMMENT 0 0.0%
SAVE 478 3.0%
USE 4 0.0%
OTHER 491 3.1%
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 1,598 30.3% 310 19.4% 17 163.2 998.9
TITLE WORD 833 15.8% 288 34.6% 7 563.4 5115.2
EXACT TITLE 36 0.7% 17 47.2% 2 14.1 24.4
KEYWORD 2,168 41.1% 396 18.3% 34 1444.9 10060.1
JOURNAL 183 3.5% 71 38.8% 130 7847.2 28955.3
EXACT JOURNAL 52 1.0% 18 34.6% 610 1902.7 3253.2
SOURCE 7 0.1% 4 57.1% 35 44.3 32.0
CONFERENCE 4 0.1% 1 25.0% 34 63.3 62.4
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 2 0.0% 0 0.0% 39 39.0 26.9
SUPERTAXA 1 0.0% 0 0.0% 8 8.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 6 0.1% 0 0.0% 17 20.8 19.3
PUBLICATION TYPE 1 0.0% 0 0.0% 20 20.0 0.0
DATE 8 0.2% 2 25.0% 47 47.0 45.8
LANGUAGE 1 0.0% 0 0.0% 792 792.0 0.0
ADDED 2 0.0% 1 50.0% 17 17.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 3 0.1% 0 0.0% 35 131.3 196.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.0% 2 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 171 3.2% 39 22.8% 4 77.6 501.8
EXACT PE 57 1.1% 4 7.0% 4 57.4 237.1
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 135 2.6% 31 23.0% 17 1445.8 8757.6
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 473 9.9% 143 30.2% 5 65.7 658.7
Single 4,302 90.1% 892 20.7% 27 1215.2 9411.0
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 4.1%
SHORT 86.1%
LONG 1.2%
TAGS 0.7%
FIELDS 1.4%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 10.3%
Ten most frequent errors:
1. First word of command is invalid 31.1%
2. NS command - no next screen 29.8%
3. FIND command with invalid index name 10.2%
4. PS command - no previous screen 7.1%
5. DISPLAY command contains invalid word 3.8%
6. Valid command at an inappropriate time 3.4%
7. Search term missing from search command 2.5%
8. Index invalid in current database 1.2%
9. DATE search with unrecognized word 0.9%
10. D LIST command issued; no list exists 0.7%
11. All others 9.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 31.3%
2. GUIDE 16.5%
3. COMMANDS 9.2%
4. FIND 8.9%
5. ADDON SEARCH 6.6%
6. INDEXES 6.3%
7. BIOSIS DATABASE 2.8%
8. DISPLAY 2.8%
9. Unrecognized term 2.5%
10. MAIL 1.9%
11. All others 11.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.8%
2. First word of command is invalid 11.4%
3. FIND command with invalid index name 9.7%
4. DISPLAY command-first of >1 screen 9.1%
5. DISPLAY command-complete in one screen 6.4%
6. FIND command retrieves >1 book 6.0%
7. DISPLAY command - middle of >1 screen 5.7%
8. DISPLAY command - last of >1 screen 4.6%
9. FIND command with zero results 4.3%
10. NS command - no next screen 2.4%
11. All others 18.6%
Ten most frequent SHOW requests:
1. SEARCH 74.1%
2. HISTORY 18.8%
3. BIOSIS NEWS 4.7%
4. SETTINGS 1.2%
5. B902 1.2%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)