MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/07/01 through 04/13/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 270 292 562
Davis 143 3 146
Irvine 29 0 29
Los Angeles 5 100 105
Riverside 9 34 43
San Diego 14 56 70
San Francisco 38 0 38
Santa Barbara 2 21 23
Santa Cruz 9 43 52
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 14 14
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 374 374
_______ ______ _____
519 966 1,485
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,324 4,103 41,832
BIO88 161 350 2,404
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 36 139
2-4 a.m. 7 17 377
4-6 a.m. 5 13 234
6-8 a.m. 44 67 349
8-10 a.m. 139 396 4,071
10-12 a.m. 259 767 8,638
12-2 p.m. 240 654 7,117
2-4 p.m. 335 1,047 9,283
4-6 p.m. 237 865 7,674
6-8 p.m. 128 344 4,001
8-10 p.m. 49 154 1,454
10-12 p.m. 31 93 899
__________ __________ __________ _________________
Total: 1,485 4,453 44,236
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 1,169 934 2,103
Davis 484 21 505
Irvine 76 0 76
Los Angeles 11 262 273
Riverside 28 70 98
San Diego 42 161 203
San Francisco 117 0 117
Santa Barbara 0 61 61
Santa Cruz 33 99 132
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 41 41
Los Alamos 0 0 0
Other - UC 1 36 37
Other-Network UC n/a 805 805
_______ ______ _____
1,961 2,492 4,453
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 11,871 11,108 22,979
Davis 4,062 136 4,198
Irvine 655 0 655
Los Angeles 328 2,209 2,537
Riverside 74 1,071 1,145
San Diego 128 1,254 1,382
San Francisco 1,340 0 1,340
Santa Barbara 0 792 792
Santa Cruz 53 982 1,035
Lawrence Berkeley 0 28 28
Lawrence Livermore 0 564 564
Los Alamos 0 0 0
Other - UC 0 187 187
Other-Network UC n/a 7,394 7,394
_______ ______ _____
18,511 25,725 44,236
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 5.0
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) 7:54
Average session length (minutes:seconds) 13:11
Longest session recorded (minutes:seconds) 187:41
Average number of searches completed per session 3.0
Retrievals per search - median 9.0
Retrievals per search - average 1401.6
Retrievals per search - standard deviation 17527
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 1.1%
Percent of long searches completed
(includes partial results) 70.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,978 29.3%
DISPLAY (excluding automatic displays) 5,573 41.0%
BROWSE 0 0.0%
HELP 213 1.6%
EXPLAIN 184 1.4%
SET/RESET 658 4.8%
SHOW 30 0.2%
ADD ON (AND, OR, AND NOT) 475 3.5%
LOGON or LOGOFF 1,776 13.1%
COMMENT 0 0.0%
SAVE 217 1.6%
USE 3 0.0%
OTHER 488 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 1,238 28.7% 266 21.5% 20 138.6 439.4
TITLE WORD 655 15.2% 272 41.5% 5 622.2 5161.2
EXACT TITLE 35 0.8% 15 42.9% 2 118.6 494.6
KEYWORD 1,805 41.8% 305 16.9% 35 2565.0 27007.5
JOURNAL 176 4.1% 82 46.6% 795 12001.2 36397.7
EXACT JOURNAL 65 1.5% 32 49.2% 1,116 3355.4 4473.8
SOURCE 3 0.1% 2 66.7% 27 27.0 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 4 0.1% 0 0.0% 73 97.5 49.0
PUBLICATION TYPE 1 0.0% 0 0.0% 12 12.0 0.0
DATE 5 0.1% 0 0.0% 74 150.4 233.3
LANGUAGE 4 0.1% 0 0.0% 598 590.3 602.6
ADDED 2 0.0% 0 0.0% 12 11.5 12.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 9 0.2% 1 11.1% 46 218.1 350.5
ACCESSION NO. 1 0.0% 1 100% 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 157 3.6% 36 22.9% 6 319.5 2720.6
EXACT PE 30 0.7% 4 13.3% 4 19.3 53.0
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 122 2.8% 29 23.8% 15 572.8 3769.8
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 348 8.8% 117 33.6% 7 218.6 2391.1
Single 3,602 91.2% 812 22.5% 27 1956.3 21089.5
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 3.2%
SHORT 87.7%
LONG 1.4%
TAGS 0.2%
FIELDS 1.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.4%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. First word of command is invalid 31.1%
2. NS command - no next screen 29.4%
3. FIND command with invalid index name 9.3%
4. PS command - no previous screen 7.4%
5. DISPLAY command contains invalid word 4.6%
6. Valid command at an inappropriate time 2.5%
7. Search term missing from search command 2.1%
8. Index invalid in current database 2.0%
9. DISPLAY command-record numbers too large 1.0%
10. Max. # of ports to a Z39 db are in use 1.0%
11. All others 9.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 32.1%
2. GUIDE 15.2%
3. FIND 10.3%
4. COMMANDS 7.1%
5. INDEXES 5.4%
6. BIOSIS DATABASE 3.8%
7. Unrecognized term 3.3%
8. ADDON SEARCH 3.3%
9. DISPLAY 2.2%
10. DATABASES 2.2%
11. All others 15.2%
Ten most frequent HELP situations:
1. First word of command is invalid 19.9%
2. Help requested from SET DB command 16.1%
3. DISPLAY command-first of >1 screen 11.8%
4. FIND command with invalid index name 8.3%
5. FIND command with zero results 6.3%
6. DISPLAY command - middle of >1 screen 5.0%
7. DISPLAY command-complete in one screen 4.0%
8. FIND command retrieves >1 book 3.8%
9. 166 3.5%
10. DISPLAY command - last of >1 screen 2.5%
11. All others 18.6%
Ten most frequent SHOW requests:
1. HISTORY 70.0%
2. SEARCH 23.3%
3. SETTINGS 3.3%
4. GLOSSARY 3.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)