MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 10/01/00 through 10/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 975 1,623 2,598
Davis 862 85 947
Irvine 156 0 156
Los Angeles 230 214 444
Riverside 135 176 311
San Diego 67 244 311
San Francisco 285 0 285
Santa Barbara 84 139 223
Santa Cruz 93 209 302
Lawrence Berkeley 0 72 72
Lawrence Livermore 0 46 46
Los Alamos 0 0 0
Other - UC 3 164 167
Other-Network UC n/a 1,784 1,784
_______ ______ _____
2,890 4,756 7,646
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 6,854 21,320 210,036
BIO88 792 1,854 14,239
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 79 220 1,491
2-4 a.m. 26 106 823
4-6 a.m. 63 171 1,042
6-8 a.m. 168 518 4,551
8-10 a.m. 810 2,071 23,288
10-12 a.m. 1,391 3,795 35,343
12-2 p.m. 1,399 4,330 40,265
2-4 p.m. 1,543 4,719 46,439
4-6 p.m. 1,206 3,811 37,089
6-8 p.m. 485 1,753 17,550
8-10 p.m. 293 1,111 11,769
10-12 p.m. 183 569 4,625
__________ __________ __________ _________________
Total: 7,646 23,174 224,275
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 3,513 5,502 9,015
Davis 2,753 185 2,938
Irvine 441 0 441
Los Angeles 556 603 1,159
Riverside 513 505 1,018
San Diego 210 671 881
San Francisco 913 0 913
Santa Barbara 311 444 755
Santa Cruz 382 606 988
Lawrence Berkeley 0 176 176
Lawrence Livermore 0 117 117
Los Alamos 0 0 0
Other - UC 2 389 391
Other-Network UC n/a 4,382 4,382
_______ ______ _____
9,594 13,580 23,174
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 38,215 66,213 104,428
Davis 24,052 1,567 25,619
Irvine 3,866 0 3,866
Los Angeles 3,544 5,026 8,570
Riverside 2,930 4,850 7,780
San Diego 1,102 7,221 8,323
San Francisco 3,899 0 3,899
Santa Barbara 2,072 4,336 6,408
Santa Cruz 2,634 6,810 9,444
Lawrence Berkeley 0 1,273 1,273
Lawrence Livermore 0 1,601 1,601
Los Alamos 0 0 0
Other - UC 0 4,568 4,568
Other-Network UC n/a 38,496 38,496
_______ ______ _____
82,314 141,961 224,275
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 5.5
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) 8:31
Average session length (minutes:seconds) 13:32
Longest session recorded (minutes:seconds) 514:34
Average number of searches completed per session 3.0
Retrievals per search - median 10.0
Retrievals per search - average 964.6
Retrievals per search - standard deviation 10737
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 52.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 20,783 30.5%
DISPLAY (excluding automatic displays) 25,505 37.5%
BROWSE 15 0.0%
HELP 1,232 1.8%
EXPLAIN 1,111 1.6%
SET/RESET 3,383 5.0%
SHOW 179 0.3%
ADD ON (AND, OR, AND NOT) 2,391 3.5%
LOGON or LOGOFF 9,035 13.3%
COMMENT 1 0.0%
SAVE 1,996 2.9%
USE 15 0.0%
OTHER 2,428 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 7,075 31.2% 1,417 20.0% 23 142.6 548.6
TITLE WORD 3,491 15.4% 1,383 39.6% 9 596.6 3817.7
EXACT TITLE 144 0.6% 90 62.5% 1 113.4 550.0
KEYWORD 8,512 37.5% 1,578 18.5% 37 2012.9 17655.0
JOURNAL 971 4.3% 398 41.0% 760 7925.8 25087.2
EXACT JOURNAL 365 1.6% 141 38.6% 935 2690.2 4469.5
SOURCE 17 0.1% 9 52.9% 222 583.1 735.6
CONFERENCE 5 0.0% 4 80.0% 2,783 2783.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 4 0.0% 0 0.0% 18 168.8 304.2
SUPERTAXA 2 0.0% 1 50.0% 79 79.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 6 0.0% 0 0.0% 4 6.3 4.5
PUBLICATION TYPE 5 0.0% 1 20.0% 14 14.0 0.0
DATE 89 0.4% 17 19.1% 7 61.3 205.9
LANGUAGE 17 0.1% 2 11.8% 141 1754.5 4392.5
ADDED 5 0.0% 0 0.0% 43 37.0 13.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 163 0.7% 26 16.0% 15 204.6 1155.5
ACCESSION NO. 4 0.0% 4 100% 0 0.0 0.0
ISSN 3 0.0% 1 33.3% 2,132 2131.5 2122.0
ISBN 1 0.0% 0 0.0% 30 30.0 0.0
PERIODICAL 1,040 4.6% 233 22.4% 6 248.8 1819.8
EXACT PE 109 0.5% 13 11.9% 5 36.1 132.5
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 648 2.9% 108 16.7% 12 797.5 7551.8
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 1,946 9.4% 587 30.2% 6 87.8 661.1
Single 18,653 90.6% 4,221 22.6% 33 1499.3 13487.5
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 15 100% 6 40.0% 10 13.7 17.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.3%
SHORT 85.5%
LONG 1.7%
TAGS 0.4%
FIELDS 1.5%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.5%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.1%
Ten most frequent errors:
1. First word of command is invalid 30.7%
2. NS command - no next screen 30.6%
3. FIND command with invalid index name 12.2%
4. PS command - no previous screen 4.6%
5. DISPLAY command contains invalid word 3.5%
6. Search term missing from search command 2.4%
7. Valid command at an inappropriate time 1.7%
8. DATE search with unrecognized word 1.3%
9. Index invalid in current database 1.2%
10. NS of SHOW/EXP command-no next screen 1.1%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 21.3%
2. GUIDE 19.3%
3. FIND 10.4%
4. COMMANDS 7.7%
5. Unrecognized term 7.0%
6. INDEXES 6.1%
7. BIOSIS DATABASE 3.3%
8. ADDON SEARCH 3.3%
9. MAIL 2.7%
10. DISPLAY 2.1%
11. All others 16.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.7%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 12.6%
4. DISPLAY command-first of >1 screen 7.8%
5. DISPLAY command - middle of >1 screen 5.1%
6. FIND command retrieves >1 book 4.4%
7. DISPLAY command-complete in one screen 4.4%
8. FIND command with zero results 4.3%
9. DISPLAY command - last of >1 screen 3.2%
10. NS command - no next screen 2.6%
11. All others 20.6%
Ten most frequent SHOW requests:
1. HISTORY 38.7%
2. SEARCH 33.3%
3. BIOSIS NEWS 8.3%
4. MAIL STATUS 7.1%
5. GLOSSARY 5.4%
6. SETTINGS 2.4%
7. B902 1.2%
8. SYSTEM NEWS 1.2%
9. TAXONOMIC GUIDE 0.6%
10. TAXONOMIC GUIDE: PLANTS 0.6%
11. All others 1.2%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)