MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/01/99 through 12/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 739 1,791 2,530
Davis 1,198 113 1,311
Irvine 226 0 226
Los Angeles 309 243 552
Riverside 188 205 393
San Diego 79 411 490
San Francisco 304 0 304
Santa Barbara 91 126 217
Santa Cruz 332 380 712
Lawrence Berkeley 0 20 20
Lawrence Livermore 0 35 35
Los Alamos 0 0 0
Other - UC 22 205 227
Other-Network UC n/a 1,603 1,603
_______ ______ _____
3,488 5,132 8,620
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 7,644 24,417 231,431
BIO88 976 2,281 17,448
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 99 374 2,807
2-4 a.m. 64 281 2,913
4-6 a.m. 53 181 2,994
6-8 a.m. 173 495 6,594
8-10 a.m. 865 2,124 19,462
10-12 a.m. 1,742 4,894 42,476
12-2 p.m. 1,495 5,122 47,568
2-4 p.m. 1,932 6,107 56,312
4-6 p.m. 1,209 3,576 32,636
6-8 p.m. 469 1,655 17,600
8-10 p.m. 313 1,111 11,561
10-12 p.m. 206 778 5,956
__________ __________ __________ _________________
Total: 8,620 26,698 248,879
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 2,707 6,194 8,901
Davis 3,872 454 4,326
Irvine 681 0 681
Los Angeles 877 673 1,550
Riverside 589 619 1,208
San Diego 289 1,027 1,316
San Francisco 1,049 0 1,049
Santa Barbara 349 366 715
Santa Cruz 1,255 1,221 2,476
Lawrence Berkeley 0 90 90
Lawrence Livermore 0 79 79
Los Alamos 0 0 0
Other - UC 22 683 705
Other-Network UC n/a 3,602 3,602
_______ ______ _____
11,690 15,008 26,698
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 28,705 67,642 96,347
Davis 35,517 3,281 38,798
Irvine 5,492 0 5,492
Los Angeles 5,727 6,131 11,858
Riverside 4,673 7,296 11,969
San Diego 1,583 11,622 13,205
San Francisco 5,116 0 5,116
Santa Barbara 3,262 3,516 6,778
Santa Cruz 8,185 10,410 18,595
Lawrence Berkeley 0 1,210 1,210
Lawrence Livermore 0 645 645
Los Alamos 0 0 0
Other - UC 134 9,224 9,358
Other-Network UC n/a 29,508 29,508
_______ ______ _____
98,394 150,485 248,879
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 7.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 8:13
Average session length (minutes:seconds) 13:30
Longest session recorded (minutes:seconds) 398:38
Average number of searches completed per session 3.1
Retrievals per search - median 10.0
Retrievals per search - average 956.3
Retrievals per search - standard deviation 11338
Percent of searches completed with 0 results 22.2%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 45.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 23,731 30.1%
DISPLAY (excluding automatic displays) 29,939 38.0%
BROWSE 0 0.0%
HELP 967 1.2%
EXPLAIN 976 1.2%
SET/RESET 3,827 4.9%
SHOW 295 0.4%
ADD ON (AND, OR, AND NOT) 2,967 3.8%
LOGON or LOGOFF 10,258 13.0%
COMMENT 1 0.0%
SAVE 2,713 3.4%
USE 34 0.0%
OTHER 2,999 3.8%
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 9,194 35.1% 1,783 19.4% 21 120.1 393.1
TITLE WORD 3,487 13.3% 1,263 36.2% 8 560.1 5022.6
EXACT TITLE 261 1.0% 133 51.0% 1 72.0 333.8
KEYWORD 9,988 38.1% 1,807 18.1% 33 1844.3 15981.9
JOURNAL 1,081 4.1% 448 41.4% 457 4542.2 15520.4
EXACT JOURNAL 508 1.9% 187 36.8% 483 1322.3 2700.9
SOURCE 19 0.1% 15 78.9% 4 6.0 6.1
CONFERENCE 14 0.1% 3 21.4% 119 58986.5 164278
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 6 0.0% 0 0.0% 14 622.0 1371.9
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 6 0.0% 1 16.7% 7 14.2 15.6
DATE 161 0.6% 43 26.7% 7 63.1 195.1
LANGUAGE 21 0.1% 0 0.0% 51 49.7 34.1
ADDED 4 0.0% 1 25.0% 14 19.0 9.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 85 0.3% 18 21.2% 12 790.2 3210.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.0% 2 100% 0 0.0 0.0
ISBN 2 0.0% 1 50.0% 8 8.0 0.0
PERIODICAL 491 1.9% 69 14.1% 5 192.6 1142.4
EXACT PE 114 0.4% 19 16.7% 3 33.8 174.7
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 753 2.9% 121 16.1% 17 724.3 8484.6
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 2,572 11.0% 801 31.1% 6 156.0 1851.6
Single 20,890 89.0% 4,265 20.4% 30 1277.2 12647.8
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 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 90.6%
LONG 1.7%
TAGS 0.3%
FIELDS 1.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.3%
Ten most frequent errors:
1. NS command - no next screen 36.6%
2. First word of command is invalid 29.4%
3. FIND command with invalid index name 9.7%
4. PS command - no previous screen 3.6%
5. DISPLAY command contains invalid word 3.4%
6. Search term missing from search command 2.0%
7. Valid command at an inappropriate time 1.9%
8. DATE search with unrecognized word 1.3%
9. NS of SHOW/EXP command-no next screen 1.2%
10. DISPLAY command-record numbers too large 0.9%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.8%
2. LOCATE (BIO DB) 14.8%
3. FIND 8.2%
4. COMMANDS 6.4%
5. INDEXES 5.6%
6. Unrecognized term 5.4%
7. BIOSIS DATABASE 3.5%
8. ADDON SEARCH 3.4%
9. DISPLAY 2.8%
10. MAIL 2.0%
11. All others 27.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.9%
2. First word of command is invalid 14.2%
3. FIND command with invalid index name 10.0%
4. DISPLAY command-first of >1 screen 6.9%
5. DISPLAY command - middle of >1 screen 6.1%
6. FIND command retrieves >1 book 5.4%
7. FIND command with zero results 4.9%
8. DISPLAY command-complete in one screen 3.4%
9. DISPLAY command - last of >1 screen 2.9%
10. PS command - no previous screen 2.2%
11. All others 21.1%
Ten most frequent SHOW requests:
1. HISTORY 60.1%
2. SEARCH 15.0%
3. GLOSSARY 3.8%
4. BIOSIS NEWS 3.5%
5. SETTINGS 2.8%
6. MAIL SETTINGS 2.4%
7. MAIL STATUS 1.7%
8. SUPERTAXA SETTING 1.4%
9. SUPERTAXA HIERARCHICAL TABLE 1.0%
10. SUPERTAXA ALPHABETICAL TABLE 1.0%
11. All others 7.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)