MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/09/01 through 06/15/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 45 243 288
Davis 149 2 151
Irvine 29 0 29
Los Angeles 0 77 77
Riverside 8 27 35
San Diego 10 63 73
San Francisco 31 0 31
Santa Barbara 1 19 20
Santa Cruz 4 44 48
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 0 8 8
Other-Network UC n/a 358 358
_______ ______ _____
277 859 1,136
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 976 3,094 27,169
BIO88 160 309 2,522
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 24 138 936
2-4 a.m. 18 59 383
4-6 a.m. 15 33 218
6-8 a.m. 27 99 523
8-10 a.m. 140 384 3,089
10-12 a.m. 273 775 8,147
12-2 p.m. 207 650 4,705
2-4 p.m. 199 567 4,735
4-6 p.m. 130 358 3,558
6-8 p.m. 37 103 888
8-10 p.m. 23 107 1,029
10-12 p.m. 43 130 1,480
__________ __________ __________ _________________
Total: 1,136 3,403 29,691
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 127 766 893
Davis 661 5 666
Irvine 64 0 64
Los Angeles 0 218 218
Riverside 16 84 100
San Diego 53 188 241
San Francisco 86 0 86
Santa Barbara 3 52 55
Santa Cruz 6 164 170
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 33 33
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 854 854
_______ ______ _____
1,016 2,387 3,403
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,396 7,836 9,232
Davis 4,566 11 4,577
Irvine 741 0 741
Los Angeles 0 2,048 2,048
Riverside 28 729 757
San Diego 80 1,984 2,064
San Francisco 1,474 0 1,474
Santa Barbara 54 375 429
Santa Cruz 42 1,391 1,433
Lawrence Berkeley 0 42 42
Lawrence Livermore 0 186 186
Los Alamos 0 0 0
Other - UC 0 68 68
Other-Network UC n/a 6,640 6,640
_______ ______ _____
8,381 21,310 29,691
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.6
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) 9:46
Average session length (minutes:seconds) 13:19
Longest session recorded (minutes:seconds) 448:58
Average number of searches completed per session 3.0
Retrievals per search - median 11.0
Retrievals per search - average 1556.3
Retrievals per search - standard deviation 12534
Percent of searches completed with 0 results 23.7%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 61.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,870 30.2%
DISPLAY (excluding automatic displays) 3,548 37.4%
BROWSE 0 0.0%
HELP 46 0.5%
EXPLAIN 64 0.7%
SET/RESET 612 6.4%
SHOW 26 0.3%
ADD ON (AND, OR, AND NOT) 533 5.6%
LOGON or LOGOFF 1,184 12.5%
COMMENT 0 0.0%
SAVE 287 3.0%
USE 3 0.0%
OTHER 319 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 1,146 35.7% 237 20.7% 24 102.2 283.5
TITLE WORD 601 18.7% 248 41.3% 12 1694.7 11012.9
EXACT TITLE 9 0.3% 7 77.8% 11 11.0 2.8
KEYWORD 970 30.2% 201 20.7% 33 3960.2 21822.2
JOURNAL 156 4.9% 71 45.5% 241 4842.5 16768.3
EXACT JOURNAL 61 1.9% 35 57.4% 37 1128.5 3920.5
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% 1,583 1583.0 0.0
DATE 9 0.3% 2 22.2% 10 15.3 15.3
LANGUAGE 1 0.0% 0 0.0% 76 76.0 0.0
ADDED 2 0.1% 1 50.0% 35 35.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 13 0.4% 1 7.7% 48 1874.9 4063.7
ACCESSION NO. 3 0.1% 3 100% 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 124 3.9% 17 13.7% 4 20.8 56.0
EXACT PE 33 1.0% 4 12.1% 3 50.6 133.8
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 81 2.5% 18 22.2% 10 506.5 2393.4
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 347 12.2% 131 37.8% 5 227.0 2296.5
Single 2,495 87.8% 577 23.1% 30 2158.1 15098.0
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 2.9%
SHORT 85.1%
LONG 2.2%
TAGS 0.0%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.7%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 8.4%
Ten most frequent errors:
1. NS command - no next screen 37.2%
2. First word of command is invalid 31.4%
3. FIND command with invalid index name 8.4%
4. DISPLAY command contains invalid word 2.8%
5. PS command - no previous screen 2.5%
6. Valid command at an inappropriate time 2.3%
7. DATE search with unrecognized word 2.1%
8. Search term missing from search command 1.4%
9. Index invalid in current database 1.2%
10. DISPLAY command - no FIND results 0.9%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. INDEXES 15.6%
2. LOCATE (BIO DB) 14.1%
3. GUIDE 10.9%
4. BIOSIS DATABASE 9.4%
5. Unrecognized term 7.8%
6. FIND 6.3%
7. COMMANDS 4.7%
8. ADDON SEARCH 4.7%
9. 1020 3.1%
10. MAGS TEXT 1.6%
11. All others 21.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 35.5%
2. DISPLAY command-first of >1 screen 10.0%
3. DISPLAY command - middle of >1 screen 8.2%
4. First word of command is invalid 7.3%
5. FIND command with invalid index name 7.3%
6. FIND command retrieves >1 book 6.4%
7. FIND command with zero results 5.5%
8. DISPLAY command - last of >1 screen 2.7%
9. DISPLAY command - no FIND results 1.8%
10. PS command - no previous screen 1.8%
11. All others 13.6%
Ten most frequent SHOW requests:
1. HISTORY 81.3%
2. FIND DISPLAY 12.5%
3. B902 6.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)