MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/06/01 through 01/12/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 64 227 291
Davis 220 13 233
Irvine 21 0 21
Los Angeles 17 39 56
Riverside 29 43 72
San Diego 23 40 63
San Francisco 33 0 33
Santa Barbara 6 56 62
Santa Cruz 11 50 61
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 0 23 23
Other-Network UC n/a 449 449
_______ ______ _____
424 952 1,376
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,231 3,425 34,540
BIO88 145 348 1,901
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 27 484
2-4 a.m. 5 10 557
4-6 a.m. 11 40 135
6-8 a.m. 19 57 395
8-10 a.m. 146 411 3,858
10-12 a.m. 276 717 6,697
12-2 p.m. 229 593 5,921
2-4 p.m. 324 851 7,637
4-6 p.m. 215 604 6,468
6-8 p.m. 71 256 2,466
8-10 p.m. 48 159 1,247
10-12 p.m. 20 48 576
__________ __________ __________ _________________
Total: 1,376 3,773 36,441
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 215 677 892
Davis 735 25 760
Irvine 81 0 81
Los Angeles 58 99 157
Riverside 62 141 203
San Diego 87 93 180
San Francisco 89 0 89
Santa Barbara 9 193 202
Santa Cruz 20 198 218
Lawrence Berkeley 0 12 12
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 0 78 78
Other-Network UC n/a 896 896
_______ ______ _____
1,356 2,417 3,773
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,936 8,264 10,200
Davis 7,024 281 7,305
Irvine 458 0 458
Los Angeles 702 1,580 2,282
Riverside 1,668 872 2,540
San Diego 913 758 1,671
San Francisco 536 0 536
Santa Barbara 50 2,267 2,317
Santa Cruz 157 2,001 2,158
Lawrence Berkeley 0 41 41
Lawrence Livermore 0 111 111
Los Alamos 0 0 0
Other - UC 0 1,291 1,291
Other-Network UC n/a 5,531 5,531
_______ ______ _____
13,444 22,997 36,441
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 4.5
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) 9:04
Average session length (minutes:seconds) 12:55
Longest session recorded (minutes:seconds) 136:15
Average number of searches completed per session 2.7
Retrievals per search - median 9.0
Retrievals per search - average 613.0
Retrievals per search - standard deviation 6417.8
Percent of searches completed with 0 results 24.1%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 64.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,298 29.8%
DISPLAY (excluding automatic displays) 3,894 35.1%
BROWSE 0 0.0%
HELP 77 0.7%
EXPLAIN 131 1.2%
SET/RESET 716 6.5%
SHOW 26 0.2%
ADD ON (AND, OR, AND NOT) 475 4.3%
LOGON or LOGOFF 1,433 12.9%
COMMENT 0 0.0%
SAVE 663 6.0%
USE 2 0.0%
OTHER 368 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 1,353 36.8% 268 19.8% 22 144.1 548.3
TITLE WORD 726 19.8% 306 42.1% 8 371.5 1260.2
EXACT TITLE 12 0.3% 7 58.3% 1 79.8 166.9
KEYWORD 1,046 28.5% 173 16.5% 30 1507.6 11201.2
JOURNAL 162 4.4% 81 50.0% 110 2293.8 7420.5
EXACT JOURNAL 86 2.3% 37 43.0% 316 1138.4 2232.1
SOURCE 1 0.0% 1 100% 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% 3 3.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 10 0.3% 1 10.0% 12 28.9 40.9
LANGUAGE 3 0.1% 0 0.0% 147 470.0 661.5
ADDED 2 0.1% 0 0.0% 25 25.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 4 0.1% 0 0.0% 39 108.3 165.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 144 3.9% 28 19.4% 5 40.1 125.9
EXACT PE 20 0.5% 3 15.0% 4 12.8 31.3
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 104 2.8% 18 17.3% 14 886.3 4057.8
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 382 11.7% 134 35.1% 7 100.5 335.6
Single 2,893 88.3% 655 22.6% 26 850.4 7244.0
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 3.6%
SHORT 83.6%
LONG 1.7%
TAGS 0.4%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.2%
COMMENTS 0.0%
Other 3.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.6%
Ten most frequent errors:
1. NS command - no next screen 37.5%
2. First word of command is invalid 26.2%
3. FIND command with invalid index name 10.4%
4. DISPLAY command contains invalid word 3.6%
5. Max. # of ports to a Z39 db are in use 3.2%
6. Search term missing from search command 2.5%
7. PS command - no previous screen 2.2%
8. Index invalid in current database 1.6%
9. Valid command at an inappropriate time 1.5%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. BIOSIS DATABASE 13.0%
2. GUIDE 12.2%
3. UPDATE SEARCH 12.2%
4. FIND 9.2%
5. LOCATE (BIO DB) 7.6%
6. PRINT 3.8%
7. COMMANDS 3.1%
8. INDEXES 3.1%
9. DISPLAY 3.1%
10. Unrecognized term 3.1%
11. All others 29.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 32.2%
2. First word of command is invalid 13.0%
3. DISPLAY command-first of >1 screen 7.7%
4. FIND command with zero results 6.7%
5. NS command - no next screen 5.8%
6. FIND command with invalid index name 5.8%
7. DISPLAY command - middle of >1 screen 4.3%
8. DISPLAY LIST - >1 screen 3.4%
9. 362 2.9%
10. FIND command retrieves >1 book 1.9%
11. All others 16.3%
Ten most frequent SHOW requests:
1. HISTORY 88.2%
2. SETTINGS 5.9%
3. MAIL STATUS 5.9%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)