MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 09/29/01 through 10/05/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 71 232 303
Davis 134 6 140
Irvine 14 0 14
Los Angeles 0 55 55
Riverside 5 29 34
San Diego 9 62 71
San Francisco 28 0 28
Santa Barbara 1 41 42
Santa Cruz 1 20 21
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 0 25 25
Other-Network UC n/a 480 480
_______ ______ _____
263 961 1,224
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,067 2,838 22,429
BIO88 157 315 2,074
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 23 353
2-4 a.m. 7 118 424
4-6 a.m. 11 65 376
6-8 a.m. 36 72 548
8-10 a.m. 168 427 2,462
10-12 a.m. 265 628 4,362
12-2 p.m. 220 556 4,715
2-4 p.m. 240 534 4,258
4-6 p.m. 145 330 3,435
6-8 p.m. 59 168 1,872
8-10 p.m. 42 119 554
10-12 p.m. 24 113 1,144
__________ __________ __________ _________________
Total: 1,224 3,153 24,503
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 175 746 921
Davis 413 16 429
Irvine 32 0 32
Los Angeles 0 136 136
Riverside 3 107 110
San Diego 36 153 189
San Francisco 94 0 94
Santa Barbara 1 119 120
Santa Cruz 1 42 43
Lawrence Berkeley 0 15 15
Lawrence Livermore 0 18 18
Los Alamos 0 0 0
Other - UC 0 31 31
Other-Network UC n/a 1,015 1,015
_______ ______ _____
755 2,398 3,153
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,615 8,586 10,201
Davis 3,344 147 3,491
Irvine 292 0 292
Los Angeles 0 822 822
Riverside 11 868 879
San Diego 77 1,141 1,218
San Francisco 698 0 698
Santa Barbara 8 923 931
Santa Cruz 4 270 274
Lawrence Berkeley 0 96 96
Lawrence Livermore 0 70 70
Los Alamos 0 0 0
Other - UC 0 219 219
Other-Network UC n/a 5,312 5,312
_______ ______ _____
6,049 18,454 24,503
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 3.3
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) 7:52
Average session length (minutes:seconds) 15:05
Longest session recorded (minutes:seconds) 483:36
Average number of searches completed per session 2.6
Retrievals per search - median 7.0
Retrievals per search - average 619.2
Retrievals per search - standard deviation 4596.1
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 75.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,774 32.3%
DISPLAY (excluding automatic displays) 2,920 34.0%
BROWSE 0 0.0%
HELP 74 0.9%
EXPLAIN 52 0.6%
SET/RESET 694 8.1%
SHOW 24 0.3%
ADD ON (AND, OR, AND NOT) 379 4.4%
LOGON or LOGOFF 1,162 13.5%
COMMENT 0 0.0%
SAVE 201 2.3%
USE 2 0.0%
OTHER 309 3.6%
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 1,016 32.5% 208 20.5% 17 101.8 404.8
TITLE WORD 628 20.1% 237 37.7% 5 696.6 5056.3
EXACT TITLE 16 0.5% 9 56.3% 1 2.7 2.6
KEYWORD 1,016 32.5% 195 19.2% 32 1532.7 7318.0
JOURNAL 78 2.5% 25 32.1% 30 682.3 1606.3
EXACT JOURNAL 95 3.0% 39 41.1% 409 2872.6 7114.3
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 3 0.1% 2 66.7% 26 26.0 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 0 0.0% 0 0.0% 0 0.0 0.0
DATE 12 0.4% 2 16.7% 9 17.4 21.9
LANGUAGE 3 0.1% 0 0.0% 155 111.7 75.1
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. 10 0.3% 1 10.0% 13 66.4 169.4
ACCESSION NO. 0 0.0% 0 0.0% 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 123 3.9% 15 12.2% 4 16.4 63.2
EXACT PE 33 1.1% 6 18.2% 3 30.0 67.6
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 93 3.0% 15 16.1% 8 1335.5 9934.9
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 347 12.6% 109 31.4% 5 40.0 147.8
Single 2,407 87.4% 532 22.1% 22 1012.7 5905.4
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 5.0%
SHORT 79.6%
LONG 1.7%
TAGS 2.6%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.2%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.2%
Ten most frequent errors:
1. NS command - no next screen 36.8%
2. First word of command is invalid 27.4%
3. FIND command with invalid index name 11.2%
4. PS command - no previous screen 3.7%
5. DISPLAY command contains invalid word 3.0%
6. Valid command at an inappropriate time 2.1%
7. Max. # of ports to a Z39 db are in use 2.1%
8. Search term missing from search command 1.7%
9. DATE search with unrecognized word 1.2%
10. Index invalid in current database 0.9%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 30.8%
2. GUIDE 17.3%
3. COMMANDS 7.7%
4. FIND 7.7%
5. BIOSIS DATABASE 5.8%
6. INDEXES 3.8%
7. AUTHOR 3.8%
8. DISPLAY 3.8%
9. ADDON SEARCH 3.8%
10. SUPERTAXA 1.9%
11. All others 13.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.6%
2. First word of command is invalid 11.9%
3. FIND command with invalid index name 9.5%
4. DISPLAY command-first of >1 screen 6.3%
5. FIND command with zero results 5.6%
6. DISPLAY command - middle of >1 screen 5.6%
7. DISPLAY command - last of >1 screen 5.6%
8. FIND command retrieves >1 book 4.8%
9. DISPLAY command-complete in one screen 4.8%
10. SHOW NEWS command 3.2%
11. All others 22.2%
Ten most frequent SHOW requests:
1. HISTORY 45.8%
2. SEARCH 29.2%
3. BIOSIS NEWS 8.3%
4. SYSTEM NEWS 4.2%
5. UCSF NEWS 4.2%
6. LIBRARY NEWS 4.2%
7. MEDLINE NEWS 4.2%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)