MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/15/02 through 06/21/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 20 105 125
Davis 76 3 79
Irvine 27 0 27
Los Angeles 3 41 44
Riverside 3 9 12
San Diego 7 30 37
San Francisco 16 0 16
Santa Barbara 0 7 7
Santa Cruz 0 3 3
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 1 27 28
Other-Network UC n/a 124 124
_______ ______ _____
153 358 511
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 463 1,418 10,199
BIO88 48 125 740
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 0 0 0
2-4 a.m. 6 2 105
4-6 a.m. 1 3 48
6-8 a.m. 13 78 586
8-10 a.m. 61 157 1,271
10-12 a.m. 87 233 1,833
12-2 p.m. 106 319 2,430
2-4 p.m. 119 381 2,148
4-6 p.m. 77 206 1,476
6-8 p.m. 32 98 649
8-10 p.m. 4 46 243
10-12 p.m. 5 20 150
__________ __________ __________ _________________
Total: 511 1,543 10,939
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 84 341 425
Davis 274 4 278
Irvine 76 0 76
Los Angeles 12 143 155
Riverside 13 19 32
San Diego 12 81 93
San Francisco 49 0 49
Santa Barbara 0 38 38
Santa Cruz 0 15 15
Lawrence Berkeley 0 9 9
Lawrence Livermore 0 16 16
Los Alamos 0 0 0
Other - UC 4 66 70
Other-Network UC n/a 287 287
_______ ______ _____
524 1,019 1,543
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 455 2,510 2,965
Davis 1,524 52 1,576
Irvine 498 0 498
Los Angeles 293 979 1,272
Riverside 15 352 367
San Diego 175 658 833
San Francisco 480 0 480
Santa Barbara 0 396 396
Santa Cruz 0 249 249
Lawrence Berkeley 0 162 162
Lawrence Livermore 0 35 35
Los Alamos 0 0 0
Other - UC 29 500 529
Other-Network UC n/a 1,577 1,577
_______ ______ _____
3,469 7,470 10,939
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 4.4
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
_________________________________________
Median session length (minutes:seconds) 7:20
Average session length (minutes:seconds) 11:22
Longest session recorded (minutes:seconds) 176:44
Average number of searches completed per session 3.0
Retrievals per search - median 8.0
Retrievals per search - average 1725.6
Retrievals per search - standard deviation 14645
Percent of searches completed with 0 results 23.3%
Percent of searches entered that are long 2.1%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,336 31.9%
DISPLAY (excluding automatic displays) 1,521 36.4%
BROWSE 0 0.0%
HELP 37 0.9%
EXPLAIN 39 0.9%
SET/RESET 213 5.1%
SHOW 3 0.1%
ADD ON (AND, OR, AND NOT) 207 4.9%
LOGON or LOGOFF 646 15.4%
COMMENT 0 0.0%
SAVE 32 0.8%
USE 1 0.0%
OTHER 147 3.5%
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 462 31.7% 92 19.9% 24 169.9 1003.3
TITLE WORD 249 17.1% 112 45.0% 5 309.8 1851.8
EXACT TITLE 13 0.9% 7 53.8% 2 99.0 151.0
KEYWORD 491 33.7% 101 20.6% 43 4981.7 27381.7
JOURNAL 66 4.5% 24 36.4% 930 6932.6 12096.4
EXACT JOURNAL 23 1.6% 10 43.5% 956 4095.8 5330.9
SOURCE 1 0.1% 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 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 5 0.3% 0 0.0% 4 3.6 2.5
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
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. 0 0.0% 0 0.0% 0 0.0 0.0
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 88 6.0% 8 9.1% 4 15.6 46.6
EXACT PE 26 1.8% 1 3.8% 4 6.4 11.3
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 34 2.3% 8 23.5% 10 83.3 154.2
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 129 9.8% 53 41.1% 5 40.5 106.3
Single 1,194 90.2% 256 21.4% 26 2548.6 18032.3
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 4.5%
SHORT 81.6%
LONG 1.2%
TAGS 0.0%
FIELDS 1.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 10.2%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.4%
Ten most frequent errors:
1. NS command - no next screen 34.5%
2. First word of command is invalid 28.2%
3. FIND command with invalid index name 8.7%
4. DISPLAY command - no FIND results 5.1%
5. DATE search with unrecognized word 4.8%
6. DISPLAY command contains invalid word 3.6%
7. Index invalid in current database 2.4%
8. DISPLAY command-record numbers too large 1.8%
9. PS command - no previous screen 1.8%
10. Search term missing from search command 1.5%
11. All others 7.5%
Ten most frequent EXPLAIN requests:
1. FIND 28.2%
2. GUIDE 25.6%
3. COMMANDS 12.8%
4. LOCATE (BIO DB) 10.3%
5. BIOSIS DATABASE 7.7%
6. INDEXES 2.6%
7. B342 2.6%
8. Unrecognized term-reminders off 2.6%
9. REMOTE SYSTEMS 2.6%
10. ADDON SEARCH 2.6%
11. All others 2.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.3%
2. First word of command is invalid 15.8%
3. FIND command with zero results 15.8%
4. FIND command with invalid index name 6.6%
5. DISPLAY command - middle of >1 screen 5.3%
6. 3 HELP commands issued from same code 3.9%
7. FIND command retrieves 1 book 3.9%
8. FIND command retrieves >1 book 3.9%
9. DISPLAY command-first of >1 screen 3.9%
10. 132 2.6%
11. All others 11.8%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. GLOSSARY 33.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)