MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/16/00 through 12/22/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 72 207 279
Davis 128 3 131
Irvine 15 0 15
Los Angeles 17 32 49
Riverside 12 39 51
San Diego 10 90 100
San Francisco 36 0 36
Santa Barbara 8 25 33
Santa Cruz 8 20 28
Lawrence Berkeley 0 13 13
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 3 16 19
Other-Network UC n/a 372 372
_______ ______ _____
309 823 1,132
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,021 3,050 28,667
BIO88 111 273 1,664
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 48 701
2-4 a.m. 13 28 200
4-6 a.m. 8 13 254
6-8 a.m. 19 74 572
8-10 a.m. 152 362 2,795
10-12 a.m. 248 659 7,324
12-2 p.m. 235 640 4,754
2-4 p.m. 214 744 6,398
4-6 p.m. 134 347 3,390
6-8 p.m. 72 294 3,021
8-10 p.m. 7 40 199
10-12 p.m. 16 74 723
__________ __________ __________ _________________
Total: 1,132 3,323 30,331
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 317 668 985
Davis 487 14 501
Irvine 65 0 65
Los Angeles 35 96 131
Riverside 61 80 141
San Diego 30 288 318
San Francisco 87 0 87
Santa Barbara 40 97 137
Santa Cruz 21 88 109
Lawrence Berkeley 0 32 32
Lawrence Livermore 0 35 35
Los Alamos 0 0 0
Other - UC 4 44 48
Other-Network UC n/a 734 734
_______ ______ _____
1,147 2,176 3,323
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,404 6,680 9,084
Davis 3,551 463 4,014
Irvine 435 0 435
Los Angeles 253 900 1,153
Riverside 508 1,941 2,449
San Diego 232 2,766 2,998
San Francisco 579 0 579
Santa Barbara 165 1,438 1,603
Santa Cruz 154 623 777
Lawrence Berkeley 0 293 293
Lawrence Livermore 0 348 348
Los Alamos 0 0 0
Other - UC 18 1,191 1,209
Other-Network UC n/a 5,389 5,389
_______ ______ _____
8,299 22,032 30,331
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 3.2
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) 9:57
Average session length (minutes:seconds) 17:41
Longest session recorded (minutes:seconds) 436:59
Average number of searches completed per session 2.9
Retrievals per search - median 8.0
Retrievals per search - average 1055.5
Retrievals per search - standard deviation 9129.7
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) 64.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,910 30.3%
DISPLAY (excluding automatic displays) 3,448 35.9%
BROWSE 0 0.0%
HELP 104 1.1%
EXPLAIN 96 1.0%
SET/RESET 609 6.3%
SHOW 11 0.1%
ADD ON (AND, OR, AND NOT) 413 4.3%
LOGON or LOGOFF 1,167 12.1%
COMMENT 0 0.0%
SAVE 531 5.5%
USE 4 0.0%
OTHER 319 3.3%
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 1,150 35.7% 240 20.9% 21 127.1 405.9
TITLE WORD 555 17.2% 215 38.7% 7 561.4 3820.1
EXACT TITLE 14 0.4% 8 57.1% 1 53.0 122.5
KEYWORD 1,081 33.6% 165 15.3% 23 2807.9 16117.3
JOURNAL 150 4.7% 50 33.3% 589 3893.3 15320.9
EXACT JOURNAL 34 1.1% 10 29.4% 1,147 5162.1 9571.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 3 0.1% 3 100% 0 0.0 0.0
BIOSYS CODES 1 0.0% 0 0.0% 2 2.0 0.0
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 2 2.0 0.0
PUBLICATION TYPE 1 0.0% 1 100% 0 0.0 0.0
DATE 14 0.4% 1 7.1% 26 43.2 41.0
LANGUAGE 1 0.0% 0 0.0% 2 2.0 0.0
ADDED 1 0.0% 0 0.0% 13 13.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 7 0.2% 4 57.1% 35 33.0 14.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.1% 1 50.0% 426 426.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 127 3.9% 34 26.8% 4 248.6 973.5
EXACT PE 16 0.5% 2 12.5% 8 18.1 33.8
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 61 1.9% 8 13.1% 11 174.1 679.1
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 319 11.0% 102 32.0% 6 49.2 271.5
Single 2,570 89.0% 536 20.9% 25 1673.4 11567.3
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 2.6%
SHORT 85.4%
LONG 2.4%
TAGS 0.4%
FIELDS 1.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 2.7%
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 35.9%
2. First word of command is invalid 27.2%
3. FIND command with invalid index name 12.0%
4. PS command - no previous screen 3.3%
5. DISPLAY command contains invalid word 3.3%
6. Max. # of ports to a Z39 db are in use 2.2%
7. Search term missing from search command 1.1%
8. Valid command at an inappropriate time 1.1%
9. D LIST command issued; no list exists 1.1%
10. DISPLAY command - no FIND results 1.0%
11. All others 12.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 27.1%
2. GUIDE 17.7%
3. FIND 14.6%
4. COMMANDS 7.3%
5. INDEXES 7.3%
6. Unrecognized term 5.2%
7. BIOSIS DATABASE 4.2%
8. LOCATE (PE DB) 3.1%
9. DISPLAY 2.1%
10. B922 2.1%
11. All others 9.4%
Ten most frequent HELP situations:
1. First word of command is invalid 17.0%
2. Help requested from SET DB command 16.5%
3. FIND command with invalid index name 14.0%
4. DISPLAY command-first of >1 screen 10.5%
5. FIND command with zero results 4.0%
6. DISPLAY command - middle of >1 screen 4.0%
7. NS command - no next screen 3.5%
8. DISPLAY command-complete in one screen 3.5%
9. F/BR with index invalid in current DB 3.0%
10. FIND command retrieves >1 book 2.5%
11. All others 21.5%
Ten most frequent SHOW requests:
1. HISTORY 63.6%
2. SEARCH 36.4%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)