MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/01/02 through 04/30/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 299 996 1,295
Davis 695 17 712
Irvine 122 0 122
Los Angeles 1 257 258
Riverside 44 77 121
San Diego 56 161 217
San Francisco 107 0 107
Santa Barbara 5 74 79
Santa Cruz 9 106 115
Lawrence Berkeley 0 13 13
Lawrence Livermore 0 54 54
Los Alamos 0 0 0
Other - UC 5 174 179
Other-Network UC n/a 1,480 1,480
_______ ______ _____
1,343 3,409 4,752
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 4,251 12,365 112,320
BIO88 501 1,205 10,406
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 20 57 356
2-4 a.m. 55 88 591
4-6 a.m. 21 48 392
6-8 a.m. 110 282 2,669
8-10 a.m. 667 1,692 11,571
10-12 a.m. 903 2,570 22,562
12-2 p.m. 829 2,295 24,794
2-4 p.m. 883 2,514 24,050
4-6 p.m. 711 2,260 19,109
6-8 p.m. 287 829 8,988
8-10 p.m. 154 551 4,267
10-12 p.m. 112 384 3,377
__________ __________ __________ _________________
Total: 4,752 13,570 122,726
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 797 3,440 4,237
Davis 2,534 54 2,588
Irvine 306 0 306
Los Angeles 6 827 833
Riverside 152 272 424
San Diego 137 419 556
San Francisco 372 0 372
Santa Barbara 9 253 262
Santa Cruz 16 290 306
Lawrence Berkeley 0 23 23
Lawrence Livermore 0 146 146
Los Alamos 0 0 0
Other - UC 7 387 394
Other-Network UC n/a 3,123 3,123
_______ ______ _____
4,336 9,234 13,570
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,479 39,431 48,910
Davis 21,521 306 21,827
Irvine 3,777 0 3,777
Los Angeles 0 9,059 9,059
Riverside 444 2,752 3,196
San Diego 852 3,743 4,595
San Francisco 2,150 0 2,150
Santa Barbara 143 2,766 2,909
Santa Cruz 35 4,830 4,865
Lawrence Berkeley 0 154 154
Lawrence Livermore 0 1,640 1,640
Los Alamos 0 0 0
Other - UC 18 3,264 3,282
Other-Network UC n/a 16,362 16,362
_______ ______ _____
38,419 84,307 122,726
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 2.6
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
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Median session length (minutes:seconds) 7:53
Average session length (minutes:seconds) 13:49
Longest session recorded (minutes:seconds) 423:12
Average number of searches completed per session 2.8
Retrievals per search - median 8.0
Retrievals per search - average 1202.1
Retrievals per search - standard deviation 15359
Percent of searches completed with 0 results 23.9%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 67.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11,696 31.0%
DISPLAY (excluding automatic displays) 13,120 34.8%
BROWSE 0 0.0%
HELP 630 1.7%
EXPLAIN 546 1.4%
SET/RESET 2,253 6.0%
SHOW 113 0.3%
ADD ON (AND, OR, AND NOT) 1,874 5.0%
LOGON or LOGOFF 5,443 14.4%
COMMENT 0 0.0%
SAVE 778 2.1%
USE 12 0.0%
OTHER 1,253 3.3%
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 3,920 30.5% 820 20.9% 24 141.0 514.8
TITLE WORD 2,628 20.5% 1,046 39.8% 11 720.4 6286.6
EXACT TITLE 82 0.6% 36 43.9% 2 214.5 1176.8
KEYWORD 4,152 32.3% 728 17.5% 34 3232.7 29140.5
JOURNAL 570 4.4% 234 41.1% 989 7400.5 21443.5
EXACT JOURNAL 223 1.7% 113 50.7% 567 4120.2 8451.8
SOURCE 10 0.1% 7 70.0% 1,709 1337.7 1163.3
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 1 0.0% 0 0.0% 10 10.0 0.0
SUPERTAXA 7 0.1% 0 0.0% 13 74.1 123.6
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 8 0.1% 1 12.5% 4 12.6 21.9
PUBLICATION TYPE 3 0.0% 0 0.0% 4 3.7 1.5
DATE 40 0.3% 7 17.5% 17 187.3 566.0
LANGUAGE 16 0.1% 0 0.0% 51 189.8 318.1
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. 18 0.1% 1 5.6% 26 725.4 2853.8
ACCESSION NO. 8 0.1% 0 0.0% 1 1.0 0.0
ISSN 4 0.0% 3 75.0% 877 877.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 595 4.6% 105 17.6% 4 125.1 1763.6
EXACT PE 189 1.5% 12 6.3% 2 10.0 36.6
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 365 2.8% 72 19.7% 29 771.3 4024.6
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 1,168 10.1% 393 33.6% 7 153.7 1043.1
Single 10,447 89.9% 2,381 22.8% 30 1943.0 19804.5
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 3.0%
SHORT 82.2%
LONG 1.6%
TAGS 1.0%
FIELDS 3.6%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.9%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.7%
Ten most frequent errors:
1. First word of command is invalid 30.0%
2. NS command - no next screen 26.3%
3. FIND command with invalid index name 12.7%
4. PS command - no previous screen 4.5%
5. DISPLAY command - no FIND results 3.5%
6. DISPLAY command contains invalid word 3.4%
7. DATE search with unrecognized word 3.1%
8. Search term missing from search command 2.5%
9. Valid command at an inappropriate time 1.7%
10. Index invalid in current database 1.5%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.1%
2. LOCATE (BIO DB) 24.0%
3. INDEXES 8.1%
4. FIND 6.8%
5. COMMANDS 5.9%
6. ADDON SEARCH 5.1%
7. Unrecognized term 3.7%
8. DISPLAY 2.9%
9. BIOSIS DATABASE 2.6%
10. DATABASES 2.4%
11. All others 13.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.3%
2. First word of command is invalid 18.1%
3. FIND command with invalid index name 11.4%
4. DISPLAY command-first of >1 screen 8.5%
5. DISPLAY command - middle of >1 screen 5.6%
6. FIND command retrieves >1 book 5.2%
7. FIND command with zero results 3.3%
8. PS command - no previous screen 2.8%
9. DISPLAY command-complete in one screen 2.7%
10. DISPLAY command - last of >1 screen 2.1%
11. All others 15.0%
Ten most frequent SHOW requests:
1. HISTORY 45.5%
2. SEARCH 42.0%
3. GLOSSARY 4.5%
4. SETTINGS 2.3%
5. MAIL SETTINGS 2.3%
6. MAIL STATUS 2.3%
7. PUBLICATION TYPES 1.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)