MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 10/13/01 through 10/19/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 59 244 303
Davis 121 7 128
Irvine 12 0 12
Los Angeles 0 50 50
Riverside 7 22 29
San Diego 19 32 51
San Francisco 36 0 36
Santa Barbara 0 43 43
Santa Cruz 4 32 36
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 1 45 46
Other-Network UC n/a 392 392
_______ ______ _____
259 884 1,143
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 974 2,609 21,545
BIO88 169 306 2,052
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 48 291
2-4 a.m. 4 5 52
4-6 a.m. 4 10 180
6-8 a.m. 12 28 343
8-10 a.m. 164 318 1,799
10-12 a.m. 225 493 4,594
12-2 p.m. 218 551 3,939
2-4 p.m. 220 595 5,603
4-6 p.m. 159 452 4,243
6-8 p.m. 64 212 1,387
8-10 p.m. 43 136 746
10-12 p.m. 18 67 420
__________ __________ __________ _________________
Total: 1,143 2,915 23,597
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 213 755 968
Davis 372 11 383
Irvine 54 0 54
Los Angeles 0 140 140
Riverside 20 58 78
San Diego 61 134 195
San Francisco 80 0 80
Santa Barbara 3 165 168
Santa Cruz 10 72 82
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 41 41
Los Alamos 0 0 0
Other - UC 3 78 81
Other-Network UC n/a 644 644
_______ ______ _____
816 2,099 2,915
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,308 7,517 9,825
Davis 3,996 37 4,033
Irvine 167 0 167
Los Angeles 0 846 846
Riverside 31 1,000 1,031
San Diego 344 926 1,270
San Francisco 696 0 696
Santa Barbara 6 1,026 1,032
Santa Cruz 22 659 681
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 675 675
Los Alamos 0 0 0
Other - UC 2 326 328
Other-Network UC n/a 3,010 3,010
_______ ______ _____
7,572 16,025 23,597
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.2
Standard deviation in seconds 5.2
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 9:27
Average session length (minutes:seconds) 12:45
Longest session recorded (minutes:seconds) 129:36
Average number of searches completed per session 2.5
Retrievals per search - median 6.0
Retrievals per search - average 581.6
Retrievals per search - standard deviation 3859.2
Percent of searches completed with 0 results 27.8%
Percent of searches entered that are long 2.0%
Percent of long searches completed
(includes partial results) 77.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,536 32.3%
DISPLAY (excluding automatic displays) 2,577 32.8%
BROWSE 0 0.0%
HELP 84 1.1%
EXPLAIN 75 1.0%
SET/RESET 627 8.0%
SHOW 24 0.3%
ADD ON (AND, OR, AND NOT) 379 4.8%
LOGON or LOGOFF 1,126 14.3%
COMMENT 0 0.0%
SAVE 144 1.8%
USE 2 0.0%
OTHER 285 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 936 33.2% 202 21.6% 23 173.1 779.6
TITLE WORD 557 19.7% 222 39.9% 7 400.9 3471.2
EXACT TITLE 22 0.8% 16 72.7% 13 42.7 68.8
KEYWORD 917 32.5% 215 23.4% 33 1263.5 6089.4
JOURNAL 102 3.6% 46 45.1% 711 4200.3 7448.1
EXACT JOURNAL 68 2.4% 34 50.0% 1,568 7050.6 13734.1
SOURCE 2 0.1% 2 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 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 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% 8 8.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 9 0.3% 2 22.2% 61 75.0 98.1
LANGUAGE 20 0.7% 5 25.0% 4 41.1 71.7
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 5 0.2% 3 60.0% 6,862 6862.0 9210.8
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 87 3.1% 21 24.1% 6 178.2 1212.6
EXACT PE 21 0.7% 1 4.8% 3 19.8 42.1
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 76 2.7% 16 21.1% 14 134.2 706.3
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 305 12.2% 102 33.4% 5 60.3 396.7
Single 2,205 87.8% 579 26.3% 30 1004.9 5096.9
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 4.1%
SHORT 84.1%
LONG 1.6%
TAGS 0.0%
FIELDS 2.5%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.8%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.5%
Ten most frequent errors:
1. NS command - no next screen 35.4%
2. First word of command is invalid 28.8%
3. FIND command with invalid index name 12.0%
4. Max. # of ports to a Z39 db are in use 4.3%
5. DISPLAY command contains invalid word 2.6%
6. Search term missing from search command 2.6%
7. PS command - no previous screen 2.5%
8. DATE search with unrecognized word 1.5%
9. Valid command at an inappropriate time 1.1%
10. Index invalid in current database 1.1%
11. All others 8.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 22.7%
2. GUIDE 16.0%
3. FIND 14.7%
4. COMMANDS 9.3%
5. INDEXES 8.0%
6. BIOSIS DATABASE 4.0%
7. AUTHOR 2.7%
8. B321 2.7%
9. B336 2.7%
10. B935 2.7%
11. All others 14.7%
Ten most frequent HELP situations:
1. First word of command is invalid 20.8%
2. Help requested from SET DB command 18.2%
3. DISPLAY command-first of >1 screen 16.4%
4. FIND command with invalid index name 11.9%
5. FIND command retrieves >1 book 4.4%
6. PS command - no previous screen 3.8%
7. FIND command with zero results 3.8%
8. 3 HELP commands issued from same code 1.9%
9. FIND command retrieves 1 book 1.9%
10. DISPLAY command-complete in one screen 1.9%
11. All others 15.1%
Ten most frequent SHOW requests:
1. HISTORY 87.0%
2. MAIL STATUS 8.7%
3. BIOSIS NEWS 4.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)