MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 08/25/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 38 208 246
Davis 145 8 153
Irvine 22 0 22
Los Angeles 0 61 61
Riverside 4 11 15
San Diego 13 41 54
San Francisco 35 0 35
Santa Barbara 2 26 28
Santa Cruz 0 24 24
Lawrence Berkeley 0 8 8
Lawrence Livermore 0 4 4
Los Alamos 0 0 0
Other - UC 8 27 35
Other-Network UC n/a 511 511
_______ ______ _____
267 929 1,196
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,038 2,891 27,545
BIO88 158 355 1,947
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 54 260
2-4 a.m. 2 5 31
4-6 a.m. 24 48 135
6-8 a.m. 34 122 648
8-10 a.m. 181 509 4,689
10-12 a.m. 296 699 4,026
12-2 p.m. 184 448 3,968
2-4 p.m. 238 683 8,912
4-6 p.m. 145 448 4,159
6-8 p.m. 43 129 1,357
8-10 p.m. 27 67 919
10-12 p.m. 15 34 388
__________ __________ __________ _________________
Total: 1,196 3,246 29,492
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 148 618 766
Davis 441 31 472
Irvine 40 0 40
Los Angeles 0 158 158
Riverside 4 39 43
San Diego 63 118 181
San Francisco 139 0 139
Santa Barbara 3 109 112
Santa Cruz 0 59 59
Lawrence Berkeley 0 16 16
Lawrence Livermore 0 7 7
Los Alamos 0 0 0
Other - UC 23 46 69
Other-Network UC n/a 1,184 1,184
_______ ______ _____
861 2,385 3,246
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 934 6,990 7,924
Davis 6,565 127 6,692
Irvine 259 0 259
Los Angeles 0 1,543 1,543
Riverside 16 1,014 1,030
San Diego 252 1,171 1,423
San Francisco 853 0 853
Santa Barbara 28 1,458 1,486
Santa Cruz 0 982 982
Lawrence Berkeley 0 388 388
Lawrence Livermore 0 52 52
Los Alamos 0 0 0
Other - UC 130 435 565
Other-Network UC n/a 6,295 6,295
_______ ______ _____
9,037 20,455 29,492
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 2.0
Standard deviation in seconds 23.5
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.5
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 9:24
Average session length (minutes:seconds) 13:50
Longest session recorded (minutes:seconds) 177:41
Average number of searches completed per session 2.7
Retrievals per search - median 7.0
Retrievals per search - average 1564.8
Retrievals per search - standard deviation 36861
Percent of searches completed with 0 results 24.9%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 78.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,788 31.6%
DISPLAY (excluding automatic displays) 3,158 35.8%
BROWSE 0 0.0%
HELP 64 0.7%
EXPLAIN 60 0.7%
SET/RESET 702 8.0%
SHOW 25 0.3%
ADD ON (AND, OR, AND NOT) 458 5.2%
LOGON or LOGOFF 1,092 12.4%
COMMENT 0 0.0%
SAVE 202 2.3%
USE 4 0.0%
OTHER 275 3.1%
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 1,026 32.2% 208 20.3% 26 197.6 661.3
TITLE WORD 560 17.6% 219 39.1% 5 1001.2 13302.6
EXACT TITLE 37 1.2% 15 40.5% 1 8.7 18.7
KEYWORD 1,020 32.1% 166 16.3% 34 4309.3 69402.8
JOURNAL 137 4.3% 64 46.7% 214 3913.3 22584.6
EXACT JOURNAL 90 2.8% 48 53.3% 220 1941.4 6604.4
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 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 3 0.1% 0 0.0% 50 99.0 115.6
SUPERTAXA 2 0.1% 0 0.0% 423 423.0 594.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 50 50.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 10 0.3% 1 10.0% 26 625.0 1166.4
LANGUAGE 6 0.2% 0 0.0% 1,556 1861.5 1455.1
ADDED 2 0.1% 0 0.0% 10 9.5 10.6
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 3 0.1% 1 33.3% 30 30.0 41.0
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 3 0.1% 2 66.7% 17,264 17264.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 112 3.5% 18 16.1% 4 263.5 1469.1
EXACT PE 32 1.0% 3 9.4% 2 51.5 231.7
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 137 4.3% 16 11.7% 41 372.2 756.8
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 389 14.1% 95 24.4% 9 220.5 635.9
Single 2,378 85.9% 563 23.7% 30 2493.8 48199.7
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 4.2%
SHORT 84.9%
LONG 0.8%
TAGS 0.1%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.3%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.7%
Ten most frequent errors:
1. NS command - no next screen 33.5%
2. First word of command is invalid 28.9%
3. FIND command with invalid index name 9.4%
4. PS command - no previous screen 4.5%
5. DISPLAY command contains invalid word 3.8%
6. DATE search with unrecognized word 2.8%
7. Search term missing from search command 2.2%
8. Max. # of ports to a Z39 db are in use 1.5%
9. 130 1.2%
10. Index invalid in current database 0.9%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 26.7%
2. GUIDE 16.7%
3. COMMANDS 5.0%
4. BIOSIS DATABASE 5.0%
5. FIND 5.0%
6. Unrecognized term 5.0%
7. BOOLEAN OPERATORS 3.3%
8. INDEXES 3.3%
9. B334 3.3%
10. ADDON SEARCH 3.3%
11. All others 23.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.5%
2. First word of command is invalid 12.1%
3. FIND command with invalid index name 10.5%
4. DISPLAY command-first of >1 screen 8.1%
5. FIND command retrieves >1 book 5.6%
6. PS command - no previous screen 4.8%
7. Multi-index search with zero results 4.8%
8. FIND command with zero results 4.0%
9. 15 3.2%
10. 3 HELP commands issued from same code 3.2%
11. All others 25.0%
Ten most frequent SHOW requests:
1. HISTORY 60.0%
2. BIOSIS NEWS 10.0%
3. SYSTEM NEWS 10.0%
4. SEARCH 10.0%
5. SETTINGS 5.0%
6. MAIL STATUS 5.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)