MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/06/02 through 04/12/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 51 165 216
Davis 186 8 194
Irvine 37 0 37
Los Angeles 0 52 52
Riverside 7 15 22
San Diego 13 20 33
San Francisco 35 0 35
Santa Barbara 0 14 14
Santa Cruz 0 13 13
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 3 26 29
Other-Network UC n/a 310 310
_______ ______ _____
332 636 968
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 861 2,341 20,920
BIO88 107 269 2,901
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2 4 88
2-4 a.m. 14 13 105
4-6 a.m. 9 13 26
6-8 a.m. 25 54 470
8-10 a.m. 105 315 2,705
10-12 a.m. 190 493 4,223
12-2 p.m. 208 566 6,825
2-4 p.m. 147 405 2,919
4-6 p.m. 152 434 3,741
6-8 p.m. 70 187 1,754
8-10 p.m. 31 88 579
10-12 p.m. 15 38 386
__________ __________ __________ _________________
Total: 968 2,610 23,821
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 173 527 700
Davis 640 36 676
Irvine 103 0 103
Los Angeles 0 111 111
Riverside 26 42 68
San Diego 36 30 66
San Francisco 122 0 122
Santa Barbara 0 42 42
Santa Cruz 0 30 30
Lawrence Berkeley 0 10 10
Lawrence Livermore 0 24 24
Los Alamos 0 0 0
Other - UC 4 54 58
Other-Network UC n/a 600 600
_______ ______ _____
1,104 1,506 2,610
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,696 5,713 7,409
Davis 7,360 245 7,605
Irvine 1,173 0 1,173
Los Angeles 0 918 918
Riverside 70 265 335
San Diego 73 390 463
San Francisco 1,064 0 1,064
Santa Barbara 0 246 246
Santa Cruz 0 977 977
Lawrence Berkeley 0 57 57
Lawrence Livermore 0 544 544
Los Alamos 0 0 0
Other - UC 12 741 753
Other-Network UC n/a 2,277 2,277
_______ ______ _____
11,448 12,373 23,821
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.6
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
_________________________________________
Median session length (minutes:seconds) 6:56
Average session length (minutes:seconds) 14:52
Longest session recorded (minutes:seconds) 317:14
Average number of searches completed per session 2.7
Retrievals per search - median 8.0
Retrievals per search - average 1327.9
Retrievals per search - standard deviation 12183
Percent of searches completed with 0 results 23.9%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 63.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,277 31.3%
DISPLAY (excluding automatic displays) 2,517 34.6%
BROWSE 0 0.0%
HELP 94 1.3%
EXPLAIN 94 1.3%
SET/RESET 502 6.9%
SHOW 18 0.2%
ADD ON (AND, OR, AND NOT) 333 4.6%
LOGON or LOGOFF 1,056 14.5%
COMMENT 0 0.0%
SAVE 131 1.8%
USE 5 0.1%
OTHER 248 3.4%
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 840 33.5% 198 23.6% 26 142.2 435.6
TITLE WORD 443 17.7% 155 35.0% 10 955.5 5331.2
EXACT TITLE 19 0.8% 8 42.1% 7 19.4 29.6
KEYWORD 678 27.0% 136 20.1% 33 3806.3 24417.7
JOURNAL 164 6.5% 54 32.9% 1,279 7749.2 19330.6
EXACT JOURNAL 54 2.2% 25 46.3% 557 3496.6 6544.7
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 4 0.2% 0 0.0% 76 126.8 148.1
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 62 62.0 0.0
PUBLICATION TYPE 2 0.1% 0 0.0% 4 3.5 2.1
DATE 13 0.5% 0 0.0% 8 28.1 43.7
LANGUAGE 3 0.1% 0 0.0% 62 278.0 394.2
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. 2 0.1% 0 0.0% 22 22.0 12.7
ACCESSION NO. 6 0.2% 0 0.0% 1 1.0 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 150 6.0% 26 17.3% 4 20.6 59.8
EXACT PE 60 2.4% 4 6.7% 3 11.4 51.1
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 69 2.8% 10 14.5% 25 85.4 320.0
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 247 11.0% 77 31.2% 8 45.4 200.2
Single 2,007 89.0% 460 22.9% 30 2183.6 15687.6
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 3.3%
SHORT 79.3%
LONG 1.5%
TAGS 0.8%
FIELDS 4.1%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 9.5%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.3%
Ten most frequent errors:
1. NS command - no next screen 33.1%
2. First word of command is invalid 29.0%
3. FIND command with invalid index name 10.2%
4. DISPLAY command contains invalid word 3.9%
5. DISPLAY command - no FIND results 3.6%
6. DATE search with unrecognized word 3.5%
7. PS command - no previous screen 2.7%
8. Search term missing from search command 2.4%
9. Valid command at an inappropriate time 1.4%
10. NS of SHOW/EXP command-no next screen 1.2%
11. All others 9.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.7%
2. LOCATE (BIO DB) 18.1%
3. COMMANDS 8.5%
4. ADDON SEARCH 8.5%
5. FIND 7.4%
6. BIOSIS DATABASE 5.3%
7. INDEXES 4.3%
8. BIOSIS NEWS 2.1%
9. DISPLAY 2.1%
10. LIMIT 2.1%
11. All others 13.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.6%
2. First word of command is invalid 18.1%
3. FIND command with invalid index name 11.7%
4. FIND command retrieves >1 book 10.6%
5. DISPLAY command - middle of >1 screen 5.9%
6. DISPLAY command-first of >1 screen 4.8%
7. FIND command with zero results 3.7%
8. DISPLAY command-complete in one screen 3.2%
9. NS command - no next screen 2.7%
10. DISPLAY command - last of >1 screen 2.7%
11. All others 10.1%
Ten most frequent SHOW requests:
1. HISTORY 93.3%
2. SETTINGS 6.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)