MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/12/02 through 01/18/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 45 252 297
Davis 211 2 213
Irvine 32 0 32
Los Angeles 1 56 57
Riverside 3 17 20
San Diego 19 57 76
San Francisco 48 0 48
Santa Barbara 3 23 26
Santa Cruz 4 16 20
Lawrence Berkeley 0 14 14
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 0 17 17
Other-Network UC n/a 437 437
_______ ______ _____
366 896 1,262
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,111 3,193 27,463
BIO88 151 357 1,674
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 26 233
2-4 a.m. 30 76 525
4-6 a.m. 6 20 296
6-8 a.m. 39 91 769
8-10 a.m. 181 405 2,912
10-12 a.m. 251 770 5,031
12-2 p.m. 218 539 4,994
2-4 p.m. 274 841 5,788
4-6 p.m. 142 475 5,776
6-8 p.m. 47 152 1,214
8-10 p.m. 33 67 558
10-12 p.m. 33 88 1,041
__________ __________ __________ _________________
Total: 1,262 3,550 29,137
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 118 637 755
Davis 810 5 815
Irvine 106 0 106
Los Angeles 2 169 171
Riverside 7 33 40
San Diego 48 173 221
San Francisco 303 0 303
Santa Barbara 3 64 67
Santa Cruz 18 34 52
Lawrence Berkeley 0 25 25
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 0 45 45
Other-Network UC n/a 944 944
_______ ______ _____
1,415 2,135 3,550
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,214 7,162 8,376
Davis 9,410 27 9,437
Irvine 951 0 951
Los Angeles 222 911 1,133
Riverside 8 236 244
San Diego 205 1,848 2,053
San Francisco 1,473 0 1,473
Santa Barbara 14 441 455
Santa Cruz 224 263 487
Lawrence Berkeley 0 310 310
Lawrence Livermore 0 104 104
Los Alamos 0 0 0
Other - UC 0 184 184
Other-Network UC n/a 3,930 3,930
_______ ______ _____
13,721 15,416 29,137
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) 8:37
Average session length (minutes:seconds) 14:24
Longest session recorded (minutes:seconds) 887:05
Average number of searches completed per session 2.8
Retrievals per search - median 8.0
Retrievals per search - average 950.6
Retrievals per search - standard deviation 12906
Percent of searches completed with 0 results 24.0%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 85.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,880 27.9%
DISPLAY (excluding automatic displays) 3,846 37.3%
BROWSE 1 0.0%
HELP 95 0.9%
EXPLAIN 128 1.2%
SET/RESET 623 6.0%
SHOW 13 0.1%
ADD ON (AND, OR, AND NOT) 670 6.5%
LOGON or LOGOFF 1,473 14.3%
COMMENT 0 0.0%
SAVE 251 2.4%
USE 2 0.0%
OTHER 325 3.2%
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 1,148 35.3% 225 19.6% 30 224.6 885.4
TITLE WORD 540 16.6% 222 41.1% 10 579.2 2693.1
EXACT TITLE 28 0.9% 20 71.4% 18 44.3 67.9
KEYWORD 957 29.5% 160 16.7% 35 3129.6 26735.9
JOURNAL 134 4.1% 47 35.1% 337 1485.7 4443.1
EXACT JOURNAL 67 2.1% 20 29.8% 1,029 2553.3 4207.3
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 1 0.0% 0 0.0% 12 12.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 18 0.6% 4 22.2% 14 75.3 141.6
LANGUAGE 7 0.2% 2 28.6% 137 458.6 527.6
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. 25 0.8% 9 36.0% 30 692.1 2342.8
ACCESSION NO. 26 0.8% 1 3.8% 1 1.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 149 4.6% 30 20.1% 6 243.2 1705.2
EXACT PE 24 0.7% 0 0.0% 3 8.2 9.6
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 123 3.8% 22 17.9% 12 1493.9 8349.9
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 357 12.5% 103 28.8% 7 129.2 622.5
Single 2,504 87.5% 551 22.0% 38 1670.8 17311.1
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 1 100% 1 100% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.7%
SHORT 82.3%
LONG 2.2%
TAGS 0.9%
FIELDS 3.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.0%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.0%
Ten most frequent errors:
1. NS command - no next screen 31.9%
2. First word of command is invalid 22.7%
3. FIND command with invalid index name 7.6%
4. DATE search with unrecognized word 5.9%
5. DISPLAY command - no FIND results 5.7%
6. DISPLAY command contains invalid word 3.8%
7. PS command - no previous screen 3.1%
8. Valid command at an inappropriate time 2.3%
9. Index invalid in current database 2.2%
10. Search term missing from search command 1.8%
11. All others 12.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 12.5%
2. FIND 12.5%
3. LOCATE (BIO DB) 11.7%
4. INDEXES 10.9%
5. BIOSIS DATABASE 5.5%
6. Unrecognized term-reminders off 4.7%
7. COMMANDS 3.9%
8. DISPLAY 3.9%
9. Unrecognized term 3.9%
10. DATE 2.3%
11. All others 28.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.0%
2. FIND command with invalid index name 8.5%
3. First word of command is invalid 8.1%
4. DISPLAY command-first of >1 screen 5.8%
5. DISPLAY command contains invalid word 4.9%
6. FIND command retrieves >1 book 4.9%
7. DISPLAY command-complete in one screen 4.9%
8. FIND command with zero results 3.6%
9. F/BR with index invalid in current DB 3.6%
10. DISPLAY command - middle of >1 screen 3.1%
11. All others 26.5%
Ten most frequent SHOW requests:
1. HISTORY 45.5%
2. SEARCH 27.3%
3. SETTINGS 9.1%
4. BIOSIS NEWS 9.1%
5. GLOSSARY 9.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)