MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/24/01 through 03/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 72 257 329
Davis 117 2 119
Irvine 29 0 29
Los Angeles 4 64 68
Riverside 20 37 57
San Diego 21 25 46
San Francisco 42 0 42
Santa Barbara 0 22 22
Santa Cruz 14 76 90
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 457 457
_______ ______ _____
319 981 1,300
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,121 3,524 34,030
BIO88 179 396 2,365
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 24 74 1,147
2-4 a.m. 5 26 86
4-6 a.m. 11 44 396
6-8 a.m. 33 109 742
8-10 a.m. 143 310 3,436
10-12 a.m. 279 729 7,786
12-2 p.m. 204 649 5,598
2-4 p.m. 258 844 6,440
4-6 p.m. 181 519 4,785
6-8 p.m. 76 329 3,529
8-10 p.m. 54 151 1,650
10-12 p.m. 32 136 800
__________ __________ __________ _________________
Total: 1,300 3,920 36,395
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 392 798 1,190
Davis 512 23 535
Irvine 71 0 71
Los Angeles 20 214 234
Riverside 114 82 196
San Diego 56 67 123
San Francisco 164 0 164
Santa Barbara 0 65 65
Santa Cruz 89 198 287
Lawrence Berkeley 0 6 6
Lawrence Livermore 0 35 35
Los Alamos 0 0 0
Other - UC 0 45 45
Other-Network UC n/a 969 969
_______ ______ _____
1,418 2,502 3,920
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,309 10,406 13,715
Davis 4,108 433 4,541
Irvine 1,396 0 1,396
Los Angeles 91 2,420 2,511
Riverside 517 956 1,473
San Diego 223 400 623
San Francisco 1,000 0 1,000
Santa Barbara 0 457 457
Santa Cruz 434 1,968 2,402
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 324 324
Los Alamos 0 0 0
Other - UC 0 535 535
Other-Network UC n/a 7,414 7,414
_______ ______ _____
11,078 25,317 36,395
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 3.0
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) 9:35
Average session length (minutes:seconds) 14:49
Longest session recorded (minutes:seconds) 187:40
Average number of searches completed per session 3.0
Retrievals per search - median 10.0
Retrievals per search - average 531.6
Retrievals per search - standard deviation 4181.5
Percent of searches completed with 0 results 22.9%
Percent of searches entered that are long 1.2%
Percent of long searches completed
(includes partial results) 55.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,492 31.1%
DISPLAY (excluding automatic displays) 4,457 39.7%
BROWSE 1 0.0%
HELP 90 0.8%
EXPLAIN 97 0.9%
SET/RESET 672 6.0%
SHOW 41 0.4%
ADD ON (AND, OR, AND NOT) 428 3.8%
LOGON or LOGOFF 1,345 12.0%
COMMENT 0 0.0%
SAVE 245 2.2%
USE 4 0.0%
OTHER 347 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 1,394 35.9% 260 18.6% 23 146.1 529.4
TITLE WORD 631 16.3% 247 39.1% 7 333.1 1864.3
EXACT TITLE 17 0.4% 13 76.5% 4 25.0 44.0
KEYWORD 1,361 35.1% 254 18.7% 25 1260.1 7178.4
JOURNAL 108 2.8% 49 45.4% 501 3774.1 10577.7
EXACT JOURNAL 67 1.7% 27 40.3% 1,309 2926.9 4824.2
SOURCE 1 0.0% 0 0.0% 25 25.0 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 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 9 0.2% 1 11.1% 13 44.0 81.3
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 2 0.1% 1 50.0% 22 22.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 14 0.4% 3 21.4% 33 1935.1 6158.7
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 2 0.1% 1 50.0% 477 477.0 0.0
PERIODICAL 145 3.7% 27 18.6% 7 286.7 2052.5
EXACT PE 17 0.4% 1 5.9% 4 89.3 306.7
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 111 2.9% 15 13.5% 14 239.1 1034.2
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 398 11.5% 129 32.4% 6 254.6 1935.1
Single 3,069 88.5% 639 20.8% 27 811.3 5229.8
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% 0 0.0% 12 12.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 88.6%
LONG 0.9%
TAGS 0.1%
FIELDS 1.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.9%
COMMENTS 0.0%
Other 1.2%
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 41.1%
2. First word of command is invalid 25.0%
3. FIND command with invalid index name 8.5%
4. Max. # of ports to a Z39 db are in use 3.9%
5. PS command - no previous screen 2.8%
6. DISPLAY command contains invalid word 2.6%
7. DATE search with unrecognized word 1.8%
8. DISPLAY command - no FIND results 1.5%
9. DISPLAY command-record numbers too large 1.5%
10. Index invalid in current database 1.5%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 20.6%
2. GUIDE 15.5%
3. FIND 10.3%
4. ADDON SEARCH 7.2%
5. COMMANDS 4.1%
6. BIOSIS DATABASE 4.1%
7. INDEXES 4.1%
8. B342 3.1%
9. DISPLAY 3.1%
10. Unrecognized term 3.1%
11. All others 24.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 17.1%
2. First word of command is invalid 14.4%
3. FIND command with invalid index name 9.6%
4. DISPLAY command-first of >1 screen 9.6%
5. FIND command retrieves >1 book 8.6%
6. NS command - no next screen 5.9%
7. DISPLAY command - middle of >1 screen 5.9%
8. FIND command with zero results 4.8%
9. DISPLAY command-record numbers too large 3.2%
10. F/BR with index invalid in current DB 3.2%
11. All others 17.6%
Ten most frequent SHOW requests:
1. HISTORY 72.7%
2. SETTINGS 9.1%
3. SEARCH 9.1%
4. MAIL STATUS 9.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)