MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 09/01/01 through 09/07/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 42 212 254
Davis 128 2 130
Irvine 25 0 25
Los Angeles 2 54 56
Riverside 4 20 24
San Diego 7 23 30
San Francisco 22 0 22
Santa Barbara 0 46 46
Santa Cruz 0 21 21
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 0 17 17
Other-Network UC n/a 443 443
_______ ______ _____
230 846 1,076
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 962 2,673 22,963
BIO88 114 233 925
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 38 592
2-4 a.m. 8 20 49
4-6 a.m. 17 39 854
6-8 a.m. 45 91 397
8-10 a.m. 136 308 2,302
10-12 a.m. 229 587 4,355
12-2 p.m. 194 530 3,751
2-4 p.m. 196 542 5,545
4-6 p.m. 157 437 3,273
6-8 p.m. 42 96 1,206
8-10 p.m. 31 110 712
10-12 p.m. 15 108 852
__________ __________ __________ _________________
Total: 1,076 2,906 23,888
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 157 582 739
Davis 413 2 415
Irvine 69 0 69
Los Angeles 2 170 172
Riverside 8 51 59
San Diego 44 77 121
San Francisco 116 0 116
Santa Barbara 0 188 188
Santa Cruz 0 51 51
Lawrence Berkeley 0 15 15
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 2 48 50
Other-Network UC n/a 906 906
_______ ______ _____
811 2,095 2,906
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,066 6,498 8,564
Davis 3,376 15 3,391
Irvine 360 0 360
Los Angeles 0 1,777 1,777
Riverside 14 489 503
San Diego 99 612 711
San Francisco 774 0 774
Santa Barbara 0 2,059 2,059
Santa Cruz 0 662 662
Lawrence Berkeley 0 167 167
Lawrence Livermore 0 41 41
Los Alamos 0 0 0
Other - UC 0 450 450
Other-Network UC n/a 4,429 4,429
_______ ______ _____
6,689 17,199 23,888
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 3.9
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) 10:36
Average session length (minutes:seconds) 14:35
Longest session recorded (minutes:seconds) 442:56
Average number of searches completed per session 2.7
Retrievals per search - median 7.0
Retrievals per search - average 514.6
Retrievals per search - standard deviation 4734.8
Percent of searches completed with 0 results 25.9%
Percent of searches entered that are long 2.0%
Percent of long searches completed
(includes partial results) 74.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,560 31.5%
DISPLAY (excluding automatic displays) 3,002 37.0%
BROWSE 0 0.0%
HELP 80 1.0%
EXPLAIN 82 1.0%
SET/RESET 594 7.3%
SHOW 17 0.2%
ADD ON (AND, OR, AND NOT) 346 4.3%
LOGON or LOGOFF 1,049 12.9%
COMMENT 0 0.0%
SAVE 142 1.8%
USE 3 0.0%
OTHER 239 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 911 32.1% 175 19.2% 21 162.5 544.6
TITLE WORD 532 18.7% 239 44.9% 6 495.6 4432.2
EXACT TITLE 28 1.0% 16 57.1% 2 4.5 6.2
KEYWORD 876 30.8% 180 20.5% 27 950.1 4878.7
JOURNAL 136 4.8% 55 40.4% 93 3629.5 21491.9
EXACT JOURNAL 67 2.4% 31 46.3% 885 5006.9 8671.6
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 1 0.0% 0 0.0% 14 14.0 0.0
DATE 7 0.2% 1 14.3% 35 362.5 806.6
LANGUAGE 1 0.0% 0 0.0% 351 351.0 0.0
ADDED 1 0.0% 0 0.0% 22 22.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 7 0.2% 1 14.3% 22 26.2 10.4
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 3,246 3246.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 138 4.9% 13 9.4% 4 23.1 72.2
EXACT PE 49 1.7% 2 4.1% 2 7.6 13.7
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 87 3.1% 13 14.9% 13 246.0 734.7
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 285 11.2% 91 31.9% 6 73.4 334.8
Single 2,259 88.8% 540 23.9% 24 814.0 6086.5
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 1.8%
SHORT 86.4%
LONG 1.3%
TAGS 0.0%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.0%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 33.0%
2. First word of command is invalid 31.6%
3. FIND command with invalid index name 9.3%
4. DISPLAY command contains invalid word 3.1%
5. Search term missing from search command 3.0%
6. PS command - no previous screen 2.5%
7. DATE search with unrecognized word 1.9%
8. Max. # of ports to a Z39 db are in use 1.5%
9. Index invalid in current database 1.3%
10. NS of SHOW/EXP command-no next screen 1.2%
11. All others 11.6%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 23.2%
2. GUIDE 14.6%
3. FIND 12.2%
4. Unrecognized term 9.8%
5. COMMANDS 6.1%
6. INDEXES 4.9%
7. ADDON SEARCH 4.9%
8. B341 2.4%
9. SUPERTAXA 2.4%
10. MAIL 2.4%
11. All others 17.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.0%
2. First word of command is invalid 16.0%
3. FIND command with invalid index name 9.9%
4. DISPLAY command-first of >1 screen 7.4%
5. FIND command retrieves >1 book 5.6%
6. DISPLAY command - middle of >1 screen 4.9%
7. FIND command with zero results 3.7%
8. NS command - no next screen 3.1%
9. F/BR with index invalid in current DB 3.1%
10. DISPLAY command-complete in one screen 2.5%
11. All others 22.8%
Ten most frequent SHOW requests:
1. HISTORY 47.1%
2. SEARCH 23.5%
3. BIOSIS NEWS 11.8%
4. TIMEOUT SETTING 11.8%
5. GLOSSARY 5.9%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)