MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 11/01/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 304 1,123 1,427
Davis 685 33 718
Irvine 114 0 114
Los Angeles 0 179 179
Riverside 34 161 195
San Diego 53 263 316
San Francisco 116 0 116
Santa Barbara 5 65 70
Santa Cruz 3 77 80
Lawrence Berkeley 0 21 21
Lawrence Livermore 0 29 29
Los Alamos 0 0 0
Other - UC 2 93 95
Other-Network UC n/a 1,429 1,429
_______ ______ _____
1,316 3,473 4,789
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 4,274 12,551 114,890
BIO88 515 1,199 9,644
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 40 224 3,060
2-4 a.m. 21 47 1,563
4-6 a.m. 44 104 852
6-8 a.m. 142 378 3,221
8-10 a.m. 565 1,411 9,858
10-12 a.m. 1,008 2,758 21,468
12-2 p.m. 847 2,316 20,099
2-4 p.m. 975 2,909 27,314
4-6 p.m. 651 2,013 21,436
6-8 p.m. 274 792 8,645
8-10 p.m. 118 421 2,992
10-12 p.m. 104 377 4,026
__________ __________ __________ _________________
Total: 4,789 13,750 124,534
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 993 3,581 4,574
Davis 2,570 70 2,640
Irvine 365 0 365
Los Angeles 0 565 565
Riverside 118 420 538
San Diego 250 736 986
San Francisco 430 0 430
Santa Barbara 7 206 213
Santa Cruz 4 224 228
Lawrence Berkeley 0 69 69
Lawrence Livermore 0 80 80
Los Alamos 0 0 0
Other - UC 5 186 191
Other-Network UC n/a 2,871 2,871
_______ ______ _____
4,742 9,008 13,750
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 10,884 40,419 51,303
Davis 23,423 325 23,748
Irvine 2,596 0 2,596
Los Angeles 0 5,859 5,859
Riverside 584 3,361 3,945
San Diego 756 8,478 9,234
San Francisco 3,142 0 3,142
Santa Barbara 18 1,477 1,495
Santa Cruz 28 2,060 2,088
Lawrence Berkeley 0 431 431
Lawrence Livermore 0 439 439
Los Alamos 0 0 0
Other - UC 4 1,699 1,703
Other-Network UC n/a 18,551 18,551
_______ ______ _____
41,435 83,099 124,534
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 5.3
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) 10:18
Average session length (minutes:seconds) 14:17
Longest session recorded (minutes:seconds) 693:35
Average number of searches completed per session 2.8
Retrievals per search - median 9.0
Retrievals per search - average 1050.1
Retrievals per search - standard deviation 12053
Percent of searches completed with 0 results 24.2%
Percent of searches entered that are long 2.1%
Percent of long searches completed
(includes partial results) 73.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 11,987 30.3%
DISPLAY (excluding automatic displays) 14,939 37.7%
BROWSE 5 0.0%
HELP 456 1.2%
EXPLAIN 466 1.2%
SET/RESET 2,445 6.2%
SHOW 90 0.2%
ADD ON (AND, OR, AND NOT) 1,763 4.5%
LOGON or LOGOFF 5,140 13.0%
COMMENT 0 0.0%
SAVE 1,109 2.8%
USE 11 0.0%
OTHER 1,196 3.0%
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 4,270 32.1% 840 19.7% 21 126.4 477.9
TITLE WORD 2,018 15.2% 835 41.4% 9 482.0 3063.1
EXACT TITLE 156 1.2% 76 48.7% 1 15.6 58.1
KEYWORD 4,845 36.4% 922 19.0% 32 1959.3 15083.8
JOURNAL 615 4.6% 262 42.6% 244 5194.1 20749.3
EXACT JOURNAL 282 2.1% 120 42.6% 678 2777.9 5940.1
SOURCE 9 0.1% 7 77.8% 50 50.0 39.6
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 5 0.0% 0 0.0% 7 13.0 17.5
SUPERTAXA 1 0.0% 0 0.0% 6 6.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 9 0.1% 0 0.0% 17 7641.8 15130.8
PUBLICATION TYPE 2 0.0% 0 0.0% 4 3.5 2.1
DATE 73 0.5% 12 16.4% 11 63.9 130.7
LANGUAGE 6 0.0% 0 0.0% 264 1835.7 4012.5
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. 29 0.2% 5 17.2% 12 28.0 52.8
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 7 0.1% 4 57.1% 1,747 1697.0 740.3
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 468 3.5% 76 16.2% 5 175.0 1396.8
EXACT PE 100 0.8% 10 10.0% 3 46.4 213.9
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 410 3.1% 79 19.3% 14 5607.5 38948.4
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 1,352 11.4% 374 27.7% 7 65.6 396.0
Single 10,521 88.6% 2,475 23.5% 31 1597.6 14018.1
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% 2 40.0% 6 21.3 31.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 87.9%
LONG 1.4%
TAGS 0.1%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.0%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.0%
Ten most frequent errors:
1. NS command - no next screen 32.3%
2. First word of command is invalid 30.0%
3. FIND command with invalid index name 11.7%
4. PS command - no previous screen 3.8%
5. DISPLAY command contains invalid word 3.3%
6. Valid command at an inappropriate time 2.6%
7. Search term missing from search command 2.2%
8. Max. # of ports to a Z39 db are in use 2.0%
9. DATE search with unrecognized word 1.2%
10. Index invalid in current database 1.2%
11. All others 9.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 22.7%
2. GUIDE 17.2%
3. FIND 8.6%
4. INDEXES 6.9%
5. COMMANDS 5.8%
6. Unrecognized term 5.4%
7. ADDON SEARCH 4.7%
8. BIOSIS DATABASE 3.9%
9. DISPLAY 2.4%
10. DATABASES 2.1%
11. All others 20.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.7%
2. First word of command is invalid 14.6%
3. FIND command with invalid index name 10.1%
4. DISPLAY command-first of >1 screen 7.9%
5. FIND command retrieves >1 book 5.4%
6. DISPLAY command-complete in one screen 5.0%
7. FIND command with zero results 4.9%
8. DISPLAY command - last of >1 screen 4.8%
9. DISPLAY command - middle of >1 screen 4.2%
10. FIND command retrieves 1 book 1.7%
11. All others 19.6%
Ten most frequent SHOW requests:
1. HISTORY 63.0%
2. SEARCH 22.2%
3. BIOSIS NEWS 7.4%
4. SETTINGS 2.5%
5. SUPERTAXA HIERARCHICAL TABLE 1.2%
6. B937 1.2%
7. GLOSSARY 1.2%
8. TIMEOUT SETTING 1.2%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)