MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/29/01 through 01/04/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 136 148
Davis 94 4 98
Irvine 18 0 18
Los Angeles 1 48 49
Riverside 5 18 23
San Diego 5 42 47
San Francisco 24 0 24
Santa Barbara 0 10 10
Santa Cruz 0 26 26
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 3 16 19
Other-Network UC n/a 286 286
_______ ______ _____
162 593 755
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 669 1,853 19,321
BIO88 86 166 689
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 26 94
2-4 a.m. 0 0 2
4-6 a.m. 17 50 332
6-8 a.m. 26 72 370
8-10 a.m. 103 303 2,103
10-12 a.m. 199 438 4,323
12-2 p.m. 123 319 3,603
2-4 p.m. 152 393 3,167
4-6 p.m. 75 240 3,752
6-8 p.m. 21 102 1,432
8-10 p.m. 21 56 609
10-12 p.m. 10 20 223
__________ __________ __________ _________________
Total: 755 2,019 20,010
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 32 402 434
Davis 350 9 359
Irvine 51 0 51
Los Angeles 2 109 111
Riverside 4 42 46
San Diego 12 125 137
San Francisco 42 0 42
Santa Barbara 0 25 25
Santa Cruz 0 72 72
Lawrence Berkeley 0 27 27
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 1 35 36
Other-Network UC n/a 676 676
_______ ______ _____
494 1,525 2,019
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 234 5,550 5,784
Davis 3,609 52 3,661
Irvine 696 0 696
Los Angeles 4 1,515 1,519
Riverside 53 485 538
San Diego 33 1,350 1,383
San Francisco 348 0 348
Santa Barbara 0 265 265
Santa Cruz 0 857 857
Lawrence Berkeley 0 317 317
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,224 1,224
Other-Network UC n/a 3,418 3,418
_______ ______ _____
4,977 15,033 20,010
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 2.4
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) 11:08
Average session length (minutes:seconds) 21:39
Longest session recorded (minutes:seconds) 728:33
Average number of searches completed per session 2.7
Retrievals per search - median 9.0
Retrievals per search - average 550.4
Retrievals per search - standard deviation 3734.9
Percent of searches completed with 0 results 22.5%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 82.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,698 27.7%
DISPLAY (excluding automatic displays) 2,409 39.4%
BROWSE 0 0.0%
HELP 60 1.0%
EXPLAIN 60 1.0%
SET/RESET 393 6.4%
SHOW 16 0.3%
ADD ON (AND, OR, AND NOT) 321 5.2%
LOGON or LOGOFF 794 13.0%
COMMENT 1 0.0%
SAVE 196 3.2%
USE 1 0.0%
OTHER 172 2.8%
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 689 36.7% 144 20.9% 22 149.5 572.2
TITLE WORD 282 15.0% 118 41.8% 7 971.7 6122.8
EXACT TITLE 8 0.4% 1 12.5% 11 23.6 29.1
KEYWORD 663 35.3% 125 18.9% 45 1144.7 4178.0
JOURNAL 69 3.7% 29 42.0% 87 3239.8 11042.9
EXACT JOURNAL 16 0.9% 7 43.8% 442 535.1 517.8
SOURCE 0 0.0% 0 0.0% 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 0 0.0% 0 0.0% 0 0.0 0.0
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 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 5 0.3% 1 20.0% 5 46.8 85.5
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. 3 0.2% 0 0.0% 38 42.7 44.2
ACCESSION NO. 0 0.0% 0 0.0% 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 59 3.1% 6 10.2% 4 33.2 129.4
EXACT PE 27 1.4% 2 7.4% 3 6.2 10.5
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 55 2.9% 12 21.8% 9 81.0 186.8
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 180 10.7% 66 36.7% 6 40.2 120.2
Single 1,510 89.3% 311 20.6% 31 823.8 4176.8
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 2.7%
SHORT 86.9%
LONG 2.0%
TAGS 0.0%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.8%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. First word of command is invalid 33.5%
2. NS command - no next screen 31.1%
3. FIND command with invalid index name 10.2%
4. 1281 3.9%
5. DISPLAY command contains invalid word 3.5%
6. PS command - no previous screen 3.5%
7. Valid command at an inappropriate time 1.4%
8. Search term missing from search command 1.4%
9. DISPLAY command - no FIND results 1.2%
10. DISPLAY command-record numbers too large 1.2%
11. All others 9.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.0%
2. FIND 20.0%
3. BIOSIS DATABASE 6.7%
4. INDEXES 6.7%
5. MAIL 6.7%
6. COMMANDS 5.0%
7. LOCATE (BIO DB) 5.0%
8. DISPLAY TAGS 3.3%
9. Unrecognized term 3.3%
10. AUTHOR 1.7%
11. All others 21.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.2%
2. First word of command is invalid 17.5%
3. DISPLAY command - middle of >1 screen 10.0%
4. NS of SHOW/EXP command-no next screen 7.5%
5. NS command - no next screen 5.8%
6. FIND command with invalid index name 5.0%
7. 1281 4.2%
8. Valid command at an inappropriate time 2.5%
9. DISPLAY command-first of >1 screen 2.5%
10. DISPLAY command - last of >1 screen 2.5%
11. All others 13.3%
Ten most frequent SHOW requests:
1. SEARCH 43.8%
2. HISTORY 31.3%
3. BIOSIS NEWS 12.5%
4. GLOSSARY 6.3%
5. MAIL STATUS 6.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)