MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/01/00 through 03/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,064 2,258 4,322
Davis 1,225 93 1,318
Irvine 325 0 325
Los Angeles 421 257 678
Riverside 241 173 414
San Diego 85 321 406
San Francisco 295 0 295
Santa Barbara 122 195 317
Santa Cruz 346 755 1,101
Lawrence Berkeley 0 50 50
Lawrence Livermore 0 61 61
Los Alamos 0 0 0
Other - UC 41 272 313
Other-Network UC n/a 2,016 2,016
_______ ______ _____
5,165 6,451 11,616
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 10,171 33,383 334,984
BIO88 1,445 3,196 22,669
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 119 391 5,069
2-4 a.m. 63 242 2,933
4-6 a.m. 62 180 1,321
6-8 a.m. 176 567 6,919
8-10 a.m. 1,052 3,018 27,499
10-12 a.m. 2,019 6,449 62,259
12-2 p.m. 2,134 6,548 63,847
2-4 p.m. 2,403 7,503 68,313
4-6 p.m. 1,973 6,146 59,789
6-8 p.m. 801 2,566 27,540
8-10 p.m. 535 2,052 20,621
10-12 p.m. 279 917 11,543
__________ __________ __________ _________________
Total: 11,616 36,579 357,653
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 7,972 7,499 15,471
Davis 3,996 331 4,327
Irvine 1,366 0 1,366
Los Angeles 1,058 783 1,841
Riverside 714 503 1,217
San Diego 204 797 1,001
San Francisco 867 0 867
Santa Barbara 393 544 937
Santa Cruz 1,321 2,183 3,504
Lawrence Berkeley 0 152 152
Lawrence Livermore 0 195 195
Los Alamos 0 0 0
Other - UC 58 635 693
Other-Network UC n/a 5,008 5,008
_______ ______ _____
17,949 18,630 36,579
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 80,275 83,735 164,010
Davis 40,380 2,109 42,489
Irvine 12,280 0 12,280
Los Angeles 8,976 7,708 16,684
Riverside 6,527 5,156 11,683
San Diego 2,319 9,605 11,924
San Francisco 3,786 0 3,786
Santa Barbara 4,806 5,675 10,481
Santa Cruz 8,274 23,744 32,018
Lawrence Berkeley 0 1,480 1,480
Lawrence Livermore 0 2,678 2,678
Los Alamos 0 0 0
Other - UC 1,629 6,322 7,951
Other-Network UC n/a 40,189 40,189
_______ ______ _____
169,252 188,401 357,653
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
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 0.3
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:22
Average session length (minutes:seconds) 13:42
Longest session recorded (minutes:seconds) 388:35
Average number of searches completed per session 3.1
Retrievals per search - median 10.0
Retrievals per search - average 1171.5
Retrievals per search - standard deviation 12123
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 45.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 32,831 29.2%
DISPLAY (excluding automatic displays) 42,994 38.3%
BROWSE 10 0.0%
HELP 2,180 1.9%
EXPLAIN 2,075 1.8%
SET/RESET 5,079 4.5%
SHOW 404 0.4%
ADD ON (AND, OR, AND NOT) 3,748 3.3%
LOGON or LOGOFF 13,805 12.3%
COMMENT 2 0.0%
SAVE 4,929 4.4%
USE 30 0.0%
OTHER 4,204 3.7%
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 10,565 29.7% 2,034 19.3% 21 127.1 519.7
TITLE WORD 5,498 15.5% 1,961 35.7% 10 864.7 6320.4
EXACT TITLE 828 2.3% 414 50.0% 1 26.6 169.7
KEYWORD 14,342 40.3% 2,529 17.6% 39 2288.7 18615.7
JOURNAL 1,261 3.5% 518 41.1% 734 9646.7 29390.3
EXACT JOURNAL 462 1.3% 174 37.7% 706 2555.7 4645.4
SOURCE 30 0.1% 24 80.0% 91 290.8 561.2
CONFERENCE 2 0.0% 1 50.0% 2,259 2259.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 8 0.0% 1 12.5% 690 4484.1 10202.2
SUPERTAXA 10 0.0% 2 20.0% 19 33.1 40.6
MAJ CONCEPT CDES 2 0.0% 0 0.0% 2,271 2271.0 0.0
CONCEPT CODES 8 0.0% 0 0.0% 71 31234.8 85256.6
PUBLICATION TYPE 10 0.0% 3 30.0% 2 3.1 3.1
DATE 179 0.5% 55 30.7% 7 86.7 207.6
LANGUAGE 76 0.2% 14 18.4% 77 719.2 1898.2
ADDED 7 0.0% 1 14.3% 9 10.3 6.9
ARTICLE 2 0.0% 0 0.0% 614 613.5 491.4
AUTHOR AFFIL. 102 0.3% 22 21.6% 25 225.4 1009.4
ACCESSION NO. 2 0.0% 2 100% 0 0.0 0.0
ISSN 4 0.0% 0 0.0% 240 239.5 0.6
ISBN 3 0.0% 1 33.3% 14 14.0 5.7
PERIODICAL 864 2.4% 172 19.9% 5 168.5 1044.8
EXACT PE 164 0.5% 27 16.5% 4 46.7 204.9
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 1,149 3.2% 222 19.3% 19 1033.9 8774.8
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 2,928 9.0% 893 30.5% 7 216.1 2614.2
Single 29,545 91.0% 6,340 21.5% 30 1707.9 14762.4
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 10 100% 0 0.0% 1 6.2 8.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 90.1%
LONG 1.1%
TAGS 0.2%
FIELDS 1.5%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.8%
COMMENTS 0.0%
Other 2.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.7%
Ten most frequent errors:
1. First word of command is invalid 32.4%
2. NS command - no next screen 29.4%
3. FIND command with invalid index name 10.8%
4. PS command - no previous screen 5.5%
5. DISPLAY command contains invalid word 3.2%
6. Valid command at an inappropriate time 2.1%
7. Search term missing from search command 2.0%
8. Index invalid in current database 1.4%
9. NS of SHOW/EXP command-no next screen 1.2%
10. DATE search with unrecognized word 1.1%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 28.4%
2. GUIDE 16.7%
3. FIND 9.5%
4. COMMANDS 7.0%
5. INDEXES 5.5%
6. Unrecognized term 4.0%
7. BIOSIS DATABASE 3.1%
8. DISPLAY 2.7%
9. ADDON SEARCH 2.7%
10. MAIL 1.6%
11. All others 18.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.0%
2. First word of command is invalid 15.5%
3. DISPLAY command-first of >1 screen 9.7%
4. FIND command with invalid index name 9.5%
5. DISPLAY command - middle of >1 screen 5.3%
6. DISPLAY command-complete in one screen 4.8%
7. FIND command retrieves >1 book 4.0%
8. FIND command with zero results 3.7%
9. DISPLAY command - last of >1 screen 3.5%
10. NS command - no next screen 2.6%
11. All others 20.4%
Ten most frequent SHOW requests:
1. HISTORY 42.0%
2. SEARCH 34.6%
3. BIOSIS NEWS 5.5%
4. GLOSSARY 2.4%
5. SYSTEM NEWS 2.1%
6. MAIL STATUS 1.8%
7. SUPERTAXA SETTING 1.6%
8. SETTINGS 1.6%
9. BIOSYSTEMATIC CODES 1.3%
10. CC STATISTICS 1.0%
11. All others 6.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)