MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/26/01 through 06/01/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 50 223 273
Davis 394 0 394
Irvine 29 0 29
Los Angeles 0 63 63
Riverside 10 27 37
San Diego 14 48 62
San Francisco 36 0 36
Santa Barbara 2 34 36
Santa Cruz 6 36 42
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 0 10 10
Other-Network UC n/a 339 339
_______ ______ _____
541 798 1,339
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,149 3,815 49,360
BIO88 190 408 27,887
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 29 123 533
2-4 a.m. 10 17 372
4-6 a.m. 9 27 224
6-8 a.m. 37 125 1,144
8-10 a.m. 134 496 4,149
10-12 a.m. 238 727 10,703
12-2 p.m. 298 822 45,688
2-4 p.m. 274 816 6,081
4-6 p.m. 169 466 4,741
6-8 p.m. 63 315 1,687
8-10 p.m. 36 146 857
10-12 p.m. 42 143 1,068
__________ __________ __________ _________________
Total: 1,339 4,223 77,247
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 133 668 801
Davis 1,340 6 1,346
Irvine 76 0 76
Los Angeles 0 212 212
Riverside 24 55 79
San Diego 65 117 182
San Francisco 154 0 154
Santa Barbara 2 118 120
Santa Cruz 12 151 163
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 55 55
Los Alamos 0 0 0
Other - UC 3 61 64
Other-Network UC n/a 968 968
_______ ______ _____
1,809 2,414 4,223
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,645 6,653 8,298
Davis 51,409 0 51,409
Irvine 595 0 595
Los Angeles 0 2,591 2,591
Riverside 164 623 787
San Diego 208 1,351 1,559
San Francisco 1,148 0 1,148
Santa Barbara 15 617 632
Santa Cruz 78 1,206 1,284
Lawrence Berkeley 0 6 6
Lawrence Livermore 0 1,025 1,025
Los Alamos 0 0 0
Other - UC 4 268 272
Other-Network UC n/a 7,641 7,641
_______ ______ _____
55,266 21,981 77,247
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 8.3
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) 9:56
Average session length (minutes:seconds) 13:23
Longest session recorded (minutes:seconds) 177:02
Average number of searches completed per session 3.1
Retrievals per search - median 9.0
Retrievals per search - average 1800.5
Retrievals per search - standard deviation 19730
Percent of searches completed with 0 results 23.2%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 65.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,704 33.4%
DISPLAY (excluding automatic displays) 4,145 37.4%
BROWSE 3 0.0%
HELP 68 0.6%
EXPLAIN 61 0.6%
SET/RESET 743 6.7%
SHOW 35 0.3%
ADD ON (AND, OR, AND NOT) 519 4.7%
LOGON or LOGOFF 1,267 11.4%
COMMENT 0 0.0%
SAVE 210 1.9%
USE 0 0.0%
OTHER 335 3.0%
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 1,604 40.1% 358 22.3% 22 194.6 1107.2
TITLE WORD 551 13.8% 203 36.8% 6 253.4 1965.1
EXACT TITLE 12 0.3% 10 83.3% 128 127.5 178.9
KEYWORD 1,240 31.0% 232 18.7% 27 3235.6 34218.7
JOURNAL 176 4.4% 82 46.6% 197 12142.4 40169.0
EXACT JOURNAL 34 0.9% 11 32.4% 2,186 10955.6 15089.9
SOURCE 7 0.2% 6 85.7% 1 1.0 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 2 0.1% 0 0.0% 28 28.0 29.7
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 32 32.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 9 0.2% 4 44.4% 105 274.4 431.7
LANGUAGE 1 0.0% 0 0.0% 29 29.0 0.0
ADDED 1 0.0% 0 0.0% 37 37.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 48 1.2% 9 18.8% 637 32812.9 64645.4
ACCESSION NO. 35 0.9% 1 2.9% 1 1.0 0.0
ISSN 6 0.2% 2 33.3% 3,312 7247.8 9990.5
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 178 4.5% 31 17.4% 5 134.0 1064.4
EXACT PE 32 0.8% 3 9.4% 6 10.4 10.5
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 61 1.5% 15 24.6% 14 290.2 872.2
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 311 8.5% 89 28.6% 5 42.0 153.1
Single 3,362 91.5% 781 23.2% 26 2445.1 24513.6
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 3 100% 1 33.3% 6 5.5 6.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.3%
SHORT 78.3%
LONG 1.5%
TAGS 0.2%
FIELDS 8.8%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.4%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 35.3%
2. First word of command is invalid 25.7%
3. FIND command with invalid index name 8.6%
4. DISPLAY command contains invalid word 5.8%
5. PS command - no previous screen 3.4%
6. Search term missing from search command 3.4%
7. Valid command at an inappropriate time 2.4%
8. NS of SHOW/EXP command-no next screen 2.0%
9. DATE search with unrecognized word 1.5%
10. Max. # of ports to a Z39 db are in use 1.4%
11. All others 10.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 16.4%
2. LOCATE (BIO DB) 16.4%
3. FIND 9.8%
4. INDEXES 8.2%
5. BIOSIS DATABASE 6.6%
6. COMMANDS 4.9%
7. B336 3.3%
8. BIOSYSTEMATIC NAME 3.3%
9. DISPLAY 3.3%
10. B925 3.3%
11. All others 24.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.2%
2. First word of command is invalid 13.2%
3. FIND command with invalid index name 13.2%
4. DISPLAY command-first of >1 screen 7.8%
5. DISPLAY command - middle of >1 screen 6.2%
6. FIND command retrieves >1 book 4.7%
7. DISPLAY command-complete in one screen 4.7%
8. F/BR with index invalid in current DB 4.7%
9. DISPLAY command-record numbers too large 3.1%
10. NS command - no next screen 2.3%
11. All others 20.2%
Ten most frequent SHOW requests:
1. HISTORY 73.1%
2. SEARCH 7.7%
3. SETTINGS 3.8%
4. TAXONOMIC GUIDE 3.8%
5. TAXONOMIC GUIDE: ANIMALS 3.8%
6. MAIL SETTINGS 3.8%
7. MAIL STATUS 3.8%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)