MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 07/07/01 through 07/13/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 66 253 319
Davis 169 12 181
Irvine 22 0 22
Los Angeles 0 66 66
Riverside 8 35 43
San Diego 6 25 31
San Francisco 56 0 56
Santa Barbara 2 22 24
Santa Cruz 5 22 27
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 1 18 19
Other-Network UC n/a 396 396
_______ ______ _____
335 857 1,192
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,052 3,227 29,593
BIO88 140 288 2,027
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 53 188
2-4 a.m. 12 29 231
4-6 a.m. 8 23 106
6-8 a.m. 24 65 345
8-10 a.m. 135 318 2,997
10-12 a.m. 249 737 7,277
12-2 p.m. 211 752 6,214
2-4 p.m. 238 724 6,586
4-6 p.m. 191 450 3,981
6-8 p.m. 74 207 2,233
8-10 p.m. 24 112 964
10-12 p.m. 15 45 498
__________ __________ __________ _________________
Total: 1,192 3,515 31,620
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 250 745 995
Davis 706 16 722
Irvine 37 0 37
Los Angeles 0 209 209
Riverside 29 87 116
San Diego 85 48 133
San Francisco 215 0 215
Santa Barbara 3 98 101
Santa Cruz 36 62 98
Lawrence Berkeley 0 21 21
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 2 39 41
Other-Network UC n/a 820 820
_______ ______ _____
1,363 2,152 3,515
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,371 7,658 10,029
Davis 7,899 116 8,015
Irvine 302 0 302
Los Angeles 0 1,757 1,757
Riverside 152 1,058 1,210
San Diego 95 518 613
San Francisco 1,034 0 1,034
Santa Barbara 7 838 845
Santa Cruz 1,109 735 1,844
Lawrence Berkeley 0 842 842
Lawrence Livermore 0 91 91
Los Alamos 0 0 0
Other - UC 1 359 360
Other-Network UC n/a 4,678 4,678
_______ ______ _____
12,970 18,650 31,620
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.3
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) 8:17
Average session length (minutes:seconds) 13:53
Longest session recorded (minutes:seconds) 401:46
Average number of searches completed per session 2.9
Retrievals per search - median 8.0
Retrievals per search - average 687.3
Retrievals per search - standard deviation 8627.4
Percent of searches completed with 0 results 24.3%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 57.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,090 31.5%
DISPLAY (excluding automatic displays) 3,699 37.7%
BROWSE 0 0.0%
HELP 110 1.1%
EXPLAIN 102 1.0%
SET/RESET 632 6.4%
SHOW 20 0.2%
ADD ON (AND, OR, AND NOT) 425 4.3%
LOGON or LOGOFF 1,204 12.3%
COMMENT 0 0.0%
SAVE 224 2.3%
USE 2 0.0%
OTHER 308 3.1%
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 1,152 33.6% 232 20.1% 23 104.3 298.4
TITLE WORD 573 16.7% 239 41.7% 6 467.0 3620.0
EXACT TITLE 27 0.8% 17 63.0% 4 5.2 5.7
KEYWORD 1,092 31.8% 216 19.8% 26 1968.0 16534.5
JOURNAL 154 4.5% 76 49.3% 200 2851.2 10258.1
EXACT JOURNAL 57 1.7% 17 29.8% 893 3473.8 11104.4
SOURCE 7 0.2% 6 85.7% 43 43.0 0.0
CONFERENCE 2 0.1% 1 50.0% 20 20.0 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 2 0.1% 0 0.0% 4 4.0 4.2
DATE 23 0.7% 0 0.0% 7 89.4 186.6
LANGUAGE 2 0.1% 1 50.0% 2 2.0 0.0
ADDED 6 0.2% 2 33.3% 63 71.5 67.3
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 11 0.3% 0 0.0% 15 272.5 401.6
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 724 724.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 192 5.6% 36 18.8% 5 27.2 80.6
EXACT PE 38 1.1% 3 7.9% 4 10.8 18.7
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 94 2.7% 22 23.4% 10 101.0 304.1
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 336 11.0% 114 33.9% 6 50.8 189.1
Single 2,731 89.0% 626 22.9% 26 1108.2 11085.9
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 3.1%
SHORT 83.4%
LONG 1.6%
TAGS 0.0%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 8.3%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 36.3%
2. First word of command is invalid 24.4%
3. FIND command with invalid index name 10.9%
4. DISPLAY command contains invalid word 4.0%
5. DATE search with unrecognized word 3.0%
6. PS command - no previous screen 2.9%
7. Search term missing from search command 2.1%
8. Index invalid in current database 1.9%
9. DISPLAY command - no FIND results 1.5%
10. Valid command at an inappropriate time 1.3%
11. All others 11.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 31.4%
2. LOCATE (BIO DB) 11.8%
3. Unrecognized term 8.8%
4. BIOSIS DATABASE 6.9%
5. INDEXES 5.9%
6. ADDON SEARCH 4.9%
7. FIND 3.9%
8. BIOSIS BACKFILES 3.9%
9. DISPLAY 2.9%
10. COMMANDS 2.0%
11. All others 17.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.2%
2. FIND command with invalid index name 13.7%
3. First word of command is invalid 10.8%
4. DISPLAY command-first of >1 screen 6.6%
5. FIND command retrieves >1 book 5.2%
6. FIND command with zero results 4.2%
7. DISPLAY command-complete in one screen 4.2%
8. NS command - no next screen 3.8%
9. F/BR with index invalid in current DB 3.8%
10. DISPLAY command - last of >1 screen 3.3%
11. All others 22.2%
Ten most frequent SHOW requests:
1. HISTORY 52.6%
2. SEARCH 36.8%
3. BIOSIS NEWS 5.3%
4. GLOSSARY 5.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)