MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 10/01/99 through 10/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,127 3,041 5,168
Davis 1,713 103 1,816
Irvine 536 0 536
Los Angeles 389 337 726
Riverside 397 251 648
San Diego 133 330 463
San Francisco 379 6 385
Santa Barbara 197 228 425
Santa Cruz 964 395 1,359
Lawrence Berkeley 0 40 40
Lawrence Livermore 0 56 56
Los Alamos 0 0 0
Other - UC 84 308 392
Other-Network UC n/a 1,827 1,827
_______ ______ _____
6,919 6,922 13,841
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 12,595 44,239 455,215
BIO88 1,246 3,190 28,602
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 149 542 6,180
2-4 a.m. 78 327 20,239
4-6 a.m. 84 306 3,183
6-8 a.m. 213 625 14,280
8-10 a.m. 1,333 4,142 33,698
10-12 a.m. 2,492 7,646 70,852
12-2 p.m. 2,567 8,930 86,373
2-4 p.m. 3,052 10,286 110,206
4-6 p.m. 2,120 7,703 72,523
6-8 p.m. 871 3,097 33,052
8-10 p.m. 579 2,511 21,971
10-12 p.m. 303 1,314 11,260
__________ __________ __________ _________________
Total: 13,841 47,429 483,817
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 8,388 11,230 19,618
Davis 5,867 291 6,158
Irvine 2,154 0 2,154
Los Angeles 1,242 1,109 2,351
Riverside 1,246 800 2,046
San Diego 377 928 1,305
San Francisco 1,402 12 1,414
Santa Barbara 822 716 1,538
Santa Cruz 3,922 1,258 5,180
Lawrence Berkeley 0 91 91
Lawrence Livermore 0 125 125
Los Alamos 0 0 0
Other - UC 204 814 1,018
Other-Network UC n/a 4,431 4,431
_______ ______ _____
25,624 21,805 47,429
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 76,758 111,345 188,103
Davis 56,400 1,980 58,380
Irvine 16,226 0 16,226
Los Angeles 9,603 10,148 19,751
Riverside 12,681 10,150 22,831
San Diego 4,732 9,196 13,928
San Francisco 11,462 88 11,550
Santa Barbara 6,102 8,169 14,271
Santa Cruz 29,514 11,682 41,196
Lawrence Berkeley 0 795 795
Lawrence Livermore 0 663 663
Los Alamos 0 0 0
Other - UC 15,493 9,866 25,359
Other-Network UC n/a 70,764 70,764
_______ ______ _____
238,971 244,846 483,817
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.5
Standard deviation in seconds 8.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:24
Average session length (minutes:seconds) 13:17
Longest session recorded (minutes:seconds) 831:54
Average number of searches completed per session 3.4
Retrievals per search - median 12.0
Retrievals per search - average 1057.9
Retrievals per search - standard deviation 11737
Percent of searches completed with 0 results 22.1%
Percent of searches entered that are long 1.1%
Percent of long searches completed
(includes partial results) 49.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 42,442 30.2%
DISPLAY (excluding automatic displays) 51,677 36.8%
BROWSE 5 0.0%
HELP 3,161 2.3%
EXPLAIN 3,051 2.2%
SET/RESET 5,364 3.8%
SHOW 649 0.5%
ADD ON (AND, OR, AND NOT) 4,987 3.6%
LOGON or LOGOFF 17,738 12.6%
COMMENT 4 0.0%
SAVE 5,366 3.8%
USE 46 0.0%
OTHER 5,962 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 12,501 27.4% 2,465 19.7% 22 132.9 432.9
TITLE WORD 6,846 15.0% 2,352 34.4% 13 451.7 2727.6
EXACT TITLE 323 0.7% 201 62.2% 1 289.0 1349.2
KEYWORD 19,934 43.7% 3,594 18.0% 41 2143.6 18610.9
JOURNAL 1,581 3.5% 700 44.3% 459 5951.4 21080.3
EXACT JOURNAL 619 1.4% 272 43.9% 1,011 3179.3 5539.1
SOURCE 38 0.1% 30 78.9% 331 785.0 1085.1
CONFERENCE 7 0.0% 7 100% 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 13 0.0% 2 15.4% 129 225.5 328.5
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 32 0.1% 9 28.1% 13 863.7 1894.2
DATE 158 0.3% 24 15.2% 9 124.8 564.5
LANGUAGE 20 0.0% 1 5.0% 82 917.7 1394.3
ADDED 3 0.0% 0 0.0% 13 12.0 8.5
ARTICLE 1 0.0% 0 0.0% 809 809.0 0.0
AUTHOR AFFIL. 466 1.0% 61 13.1% 121 4867.6 22792.1
ACCESSION NO. 5 0.0% 5 100% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 1,607 3.5% 340 21.2% 5 251.0 1661.3
EXACT PE 289 0.6% 31 10.7% 3 34.3 159.4
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 1,172 2.6% 307 26.2% 18 806.6 5905.7
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 3,342 7.9% 976 29.2% 8 234.4 2659.3
Single 38,725 92.1% 8,350 21.6% 33 1538.0 14465.5
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 5 100% 1 20.0% 6 9.3 10.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 87.9%
LONG 1.8%
TAGS 0.3%
FIELDS 1.8%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.9%
COMMENTS 0.0%
Other 2.7%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 12.4%
Ten most frequent errors:
1. First word of command is invalid 33.1%
2. NS command - no next screen 28.7%
3. FIND command with invalid index name 10.5%
4. PS command - no previous screen 5.6%
5. DISPLAY command contains invalid word 3.1%
6. Valid command at an inappropriate time 2.1%
7. Search term missing from search command 2.0%
8. NS of SHOW/EXP command-no next screen 1.8%
9. Index invalid in current database 1.1%
10. DISPLAY command-record numbers too large 0.9%
11. All others 11.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 23.2%
2. GUIDE 16.4%
3. FIND 8.2%
4. COMMANDS 7.5%
5. Unrecognized term 6.0%
6. INDEXES 5.6%
7. ADDON SEARCH 3.5%
8. BIOSIS DATABASE 3.2%
9. DISPLAY 2.8%
10. BIOSIS NEWS 1.5%
11. All others 22.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.5%
2. First word of command is invalid 15.6%
3. DISPLAY command-first of >1 screen 9.4%
4. FIND command with invalid index name 9.2%
5. FIND command retrieves >1 book 5.5%
6. DISPLAY command - middle of >1 screen 5.5%
7. FIND command with zero results 4.4%
8. DISPLAY command-complete in one screen 4.0%
9. DISPLAY command - last of >1 screen 2.9%
10. NS command - no next screen 2.7%
11. All others 20.3%
Ten most frequent SHOW requests:
1. HISTORY 36.4%
2. SEARCH 33.1%
3. BIOSIS NEWS 6.0%
4. MAIL STATUS 6.0%
5. GLOSSARY 4.4%
6. MAIL SETTINGS 2.1%
7. SETTINGS 1.9%
8. SYSTEM NEWS 1.4%
9. SUPERTAXA SETTING 1.3%
10. PUBLICATION TYPES 1.1%
11. All others 6.3%