MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/01/99 through 04/30/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,083 3,611 7,694
Davis 2,499 210 2,709
Irvine 897 0 897
Los Angeles 430 570 1,000
Riverside 602 385 987
San Diego 132 945 1,077
San Francisco 546 6 552
Santa Barbara 670 373 1,043
Santa Cruz 759 449 1,208
Lawrence Berkeley 0 51 51
Lawrence Livermore 0 82 82
Los Alamos 0 0 0
Other - UC 24 409 433
Other-Network UC n/a 2,107 2,107
_______ ______ _____
10,642 9,198 19,840
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 18,147 66,282 660,524
BIO88 1,693 4,767 62,408
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 239 843 10,784
2-4 a.m. 80 235 2,128
4-6 a.m. 86 316 2,732
6-8 a.m. 261 796 7,476
8-10 a.m. 1,731 5,136 48,322
10-12 a.m. 3,537 11,909 111,162
12-2 p.m. 3,524 12,410 114,905
2-4 p.m. 4,103 14,776 157,665
4-6 p.m. 3,106 11,671 120,349
6-8 p.m. 1,556 6,443 73,152
8-10 p.m. 1,140 4,505 53,057
10-12 p.m. 477 2,009 21,200
__________ __________ __________ _________________
Total: 19,840 71,049 722,932
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 18,276 13,418 31,694
Davis 8,385 640 9,025
Irvine 3,621 0 3,621
Los Angeles 1,378 1,759 3,137
Riverside 1,802 1,280 3,082
San Diego 345 2,066 2,411
San Francisco 1,805 14 1,819
Santa Barbara 3,497 1,274 4,771
Santa Cruz 3,047 1,357 4,404
Lawrence Berkeley 0 151 151
Lawrence Livermore 0 140 140
Los Alamos 0 0 0
Other - UC 21 1,159 1,180
Other-Network UC n/a 5,614 5,614
_______ ______ _____
42,177 28,872 71,049
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 186,300 174,267 360,567
Davis 73,566 4,540 78,106
Irvine 27,536 0 27,536
Los Angeles 14,494 18,279 32,773
Riverside 12,355 14,906 27,261
San Diego 1,320 16,413 17,733
San Francisco 13,013 204 13,217
Santa Barbara 32,878 15,377 48,255
Santa Cruz 22,082 17,825 39,907
Lawrence Berkeley 0 2,795 2,795
Lawrence Livermore 0 1,426 1,426
Los Alamos 0 0 0
Other - UC 208 11,685 11,893
Other-Network UC n/a 61,463 61,463
_______ ______ _____
383,752 339,180 722,932
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.6
Standard deviation in seconds 5.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:34
Average session length (minutes:seconds) 13:10
Longest session recorded (minutes:seconds) 266:00
Average number of searches completed per session 3.6
Retrievals per search - median 11.0
Retrievals per search - average 973.7
Retrievals per search - standard deviation 10093
Percent of searches completed with 0 results 22.7%
Percent of searches entered that are long 0.7%
Percent of long searches completed
(includes partial results) 42.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 63,802 29.2%
DISPLAY (excluding automatic displays) 88,966 40.8%
BROWSE 81 0.0%
HELP 4,105 1.9%
EXPLAIN 3,934 1.8%
SET/RESET 7,073 3.2%
SHOW 1,068 0.5%
ADD ON (AND, OR, AND NOT) 7,247 3.3%
LOGON or LOGOFF 26,775 12.3%
COMMENT 4 0.0%
SAVE 6,107 2.8%
USE 73 0.0%
OTHER 9,079 4.2%
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 17,288 25.4% 3,387 19.6% 20 165.8 775.7
TITLE WORD 9,241 13.6% 3,417 37.0% 13 600.6 6117.6
EXACT TITLE 668 1.0% 444 66.5% 1 127.3 541.9
KEYWORD 32,597 47.8% 6,032 18.5% 35 1877.0 15482.8
JOURNAL 2,438 3.6% 961 39.4% 627 5088.5 15373.9
EXACT JOURNAL 916 1.3% 301 32.9% 677 2039.4 3395.7
SOURCE 42 0.1% 31 73.8% 150 1740.1 4265.1
CONFERENCE 15 0.0% 6 40.0% 96 4022.8 6878.7
BIOSYS NAMES 30 0.0% 16 53.3% 42 4733.1 12307.6
BIOSYS CODES 82 0.1% 5 6.1% 184 13393.0 24061.7
SUPERTAXA 147 0.2% 25 17.0% 37 560.9 2652.7
MAJ CONCEPT CDES 5 0.0% 0 0.0% 580 4640.6 9602.5
CONCEPT CODES 229 0.3% 22 9.6% 194 3768.8 13414.4
PUBLICATION TYPE 286 0.4% 40 14.0% 23 1053.6 7685.5
DATE 1,170 1.7% 216 18.5% 13 140.2 723.1
LANGUAGE 159 0.2% 13 8.2% 30 236.7 492.7
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. 169 0.2% 38 22.5% 25 802.0 3704.0
ACCESSION NO. 17 0.0% 15 88.2% 1 1.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 8 0.0% 0 0.0% 22 23.4 3.8
PERIODICAL 2,122 3.1% 525 24.7% 6 406.3 2467.6
EXACT PE 313 0.5% 60 19.2% 4 91.1 535.6
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 1 0.0% 0 0.0% 4,066 4066.0 0.0
Other indexes 186 0.3% 72 38.7% 29 190.1 528.2
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 4,582 7.2% 1,366 29.8% 8 202.0 2296.4
Single 58,747 92.8% 12,828 21.8% 31 1446.4 12422.8
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 81 100% 9 11.1% 12 7.4 7.6
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.6%
SHORT 89.2%
LONG 1.2%
TAGS 0.2%
FIELDS 1.3%
BROWSE REVIEW 0.1%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.2%
COMMENTS 0.0%
Other 3.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.9%
Ten most frequent errors:
1. First word of command is invalid 31.8%
2. NS command - no next screen 30.6%
3. FIND command with invalid index name 10.3%
4. PS command - no previous screen 5.3%
5. DISPLAY command contains invalid word 3.7%
6. Valid command at an inappropriate time 2.5%
7. Search term missing from search command 2.0%
8. Index invalid in current database 1.1%
9. DATE search with unrecognized word 1.0%
10. DISPLAY command-record numbers too large 0.9%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 29.0%
2. GUIDE 16.7%
3. FIND 10.3%
4. COMMANDS 6.4%
5. INDEXES 6.4%
6. Unrecognized term 4.5%
7. ADDON SEARCH 3.0%
8. DISPLAY 2.8%
9. BIOSIS DATABASE 2.2%
10. MAIL 2.0%
11. All others 16.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.6%
2. First word of command is invalid 15.1%
3. FIND command with invalid index name 9.0%
4. DISPLAY command-first of >1 screen 8.8%
5. DISPLAY command - middle of >1 screen 5.3%
6. DISPLAY command-complete in one screen 5.3%
7. FIND command with zero results 4.9%
8. FIND command retrieves >1 book 4.3%
9. DISPLAY command - last of >1 screen 3.9%
10. NS command - no next screen 3.2%
11. All others 20.7%
Ten most frequent SHOW requests:
1. HISTORY 39.0%
2. SEARCH 30.2%
3. MAIL STATUS 5.9%
4. TAXONOMIC GUIDE 3.4%
5. TAXONOMIC GUIDE: PLANTS 3.2%
6. GLOSSARY 2.8%
7. SETTINGS 2.5%
8. B606 2.5%
9. MAIL SETTINGS 1.5%
10. BIOSIS NEWS 1.3%
11. All others 7.7%