MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 09/01/00 through 09/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 872 1,421 2,293
Davis 896 72 968
Irvine 127 0 127
Los Angeles 181 215 396
Riverside 113 143 256
San Diego 68 262 330
San Francisco 426 0 426
Santa Barbara 45 155 200
Santa Cruz 71 223 294
Lawrence Berkeley 0 82 82
Lawrence Livermore 0 16 16
Los Alamos 0 0 0
Other - UC 4 185 189
Other-Network UC n/a 1,372 1,372
_______ ______ _____
2,803 4,146 6,949
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 6,180 19,667 205,677
BIO88 769 1,982 23,548
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 40 81 651
2-4 a.m. 28 89 493
4-6 a.m. 47 188 1,170
6-8 a.m. 141 411 4,221
8-10 a.m. 752 1,998 16,592
10-12 a.m. 1,344 4,012 38,639
12-2 p.m. 1,272 3,743 37,456
2-4 p.m. 1,387 4,371 47,504
4-6 p.m. 1,102 3,698 45,157
6-8 p.m. 416 1,566 21,640
8-10 p.m. 281 988 10,258
10-12 p.m. 139 504 5,444
__________ __________ __________ _________________
Total: 6,949 21,649 229,225
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 3,222 4,944 8,166
Davis 2,860 194 3,054
Irvine 417 0 417
Los Angeles 461 507 968
Riverside 437 430 867
San Diego 216 797 1,013
San Francisco 1,462 0 1,462
Santa Barbara 142 492 634
Santa Cruz 232 623 855
Lawrence Berkeley 0 231 231
Lawrence Livermore 0 51 51
Los Alamos 0 0 0
Other - UC 5 452 457
Other-Network UC n/a 3,474 3,474
_______ ______ _____
9,454 12,195 21,649
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 31,344 52,449 83,793
Davis 30,074 1,835 31,909
Irvine 3,578 0 3,578
Los Angeles 3,243 3,611 6,854
Riverside 23,621 5,453 29,074
San Diego 3,406 6,809 10,215
San Francisco 9,211 0 9,211
Santa Barbara 710 5,463 6,173
Santa Cruz 2,543 7,769 10,312
Lawrence Berkeley 0 970 970
Lawrence Livermore 0 465 465
Los Alamos 0 0 0
Other - UC 7 4,007 4,014
Other-Network UC n/a 32,657 32,657
_______ ______ _____
107,737 121,488 229,225
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.8
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) 8:06
Average session length (minutes:seconds) 14:01
Longest session recorded (minutes:seconds) 454:45
Average number of searches completed per session 3.1
Retrievals per search - median 10.0
Retrievals per search - average 967.5
Retrievals per search - standard deviation 12678
Percent of searches completed with 0 results 22.7%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 49.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 18,946 29.9%
DISPLAY (excluding automatic displays) 23,893 37.7%
BROWSE 19 0.0%
HELP 1,085 1.7%
EXPLAIN 1,050 1.7%
SET/RESET 3,239 5.1%
SHOW 203 0.3%
ADD ON (AND, OR, AND NOT) 2,703 4.3%
LOGON or LOGOFF 8,113 12.8%
COMMENT 0 0.0%
SAVE 1,704 2.7%
USE 14 0.0%
OTHER 2,468 3.9%
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 7,125 34.4% 1,368 19.2% 22 132.5 474.1
TITLE WORD 3,110 15.0% 1,109 35.7% 10 783.5 6265.5
EXACT TITLE 151 0.7% 76 50.3% 1 60.8 356.2
KEYWORD 7,436 35.9% 1,380 18.6% 34 2177.2 22543.3
JOURNAL 764 3.7% 333 43.6% 667 6387.1 20714.6
EXACT JOURNAL 316 1.5% 131 41.5% 816 2823.5 5883.6
SOURCE 3 0.0% 1 33.3% 12 11.5 14.8
CONFERENCE 2 0.0% 1 50.0% 514 514.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 2 0.0% 0 0.0% 333 333.0 438.4
SUPERTAXA 7 0.0% 2 28.6% 8 41.8 78.4
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 7 0.0% 1 14.3% 27 51.2 69.0
PUBLICATION TYPE 12 0.1% 3 25.0% 4 535.8 798.3
DATE 78 0.4% 10 12.8% 12 131.8 367.3
LANGUAGE 26 0.1% 1 3.8% 211 221.1 263.7
ADDED 3 0.0% 0 0.0% 15 15.3 2.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 63 0.3% 12 19.0% 14 1102.8 3637.2
ACCESSION NO. 2 0.0% 1 50.0% 1 1.0 0.0
ISSN 2 0.0% 1 50.0% 11 11.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 835 4.0% 228 27.3% 5 143.7 1640.9
EXACT PE 95 0.5% 18 18.9% 3 41.6 161.9
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 698 3.4% 89 12.8% 14 936.2 7020.4
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 1,807 9.6% 543 30.0% 6 109.0 1355.8
Single 16,955 90.4% 3,643 21.5% 31 1446.4 15975.8
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 19 100% 9 47.4% 1 3.4 5.3
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 84.9%
LONG 2.3%
TAGS 0.9%
FIELDS 1.8%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.0%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. NS command - no next screen 32.2%
2. First word of command is invalid 29.8%
3. FIND command with invalid index name 9.8%
4. PS command - no previous screen 4.6%
5. DISPLAY command contains invalid word 3.3%
6. Search term missing from search command 2.3%
7. Valid command at an inappropriate time 1.9%
8. DATE search with unrecognized word 1.7%
9. NS of SHOW/EXP command-no next screen 1.4%
10. Index invalid in current database 1.2%
11. All others 12.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 23.7%
2. GUIDE 17.3%
3. FIND 9.1%
4. COMMANDS 6.8%
5. INDEXES 5.9%
6. Unrecognized term 3.8%
7. DISPLAY 3.5%
8. BIOSIS DATABASE 3.2%
9. ADDON SEARCH 3.0%
10. DATABASES 2.1%
11. All others 21.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.8%
2. First word of command is invalid 15.7%
3. DISPLAY command-first of >1 screen 9.5%
4. FIND command with invalid index name 8.8%
5. FIND command retrieves >1 book 5.2%
6. FIND command with zero results 5.1%
7. DISPLAY command - middle of >1 screen 4.6%
8. DISPLAY command-complete in one screen 4.2%
9. DISPLAY command - last of >1 screen 3.6%
10. NS command - no next screen 3.0%
11. All others 20.6%
Ten most frequent SHOW requests:
1. HISTORY 40.9%
2. SEARCH 32.4%
3. MAIL STATUS 4.5%
4. BIOSIS NEWS 3.4%
5. GLOSSARY 3.4%
6. SETTINGS 1.7%
7. SYSTEM NEWS 1.7%
8. SUPERTAXA SETTING 1.1%
9. DISEASE INDEX 1.1%
10. B902 1.1%
11. All others 8.5%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)