MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 02/16/02 through 02/22/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 75 222 297
Davis 177 4 181
Irvine 9 0 9
Los Angeles 0 106 106
Riverside 7 12 19
San Diego 10 44 54
San Francisco 42 0 42
Santa Barbara 1 12 13
Santa Cruz 2 16 18
Lawrence Berkeley 0 6 6
Lawrence Livermore 0 32 32
Los Alamos 0 0 0
Other - UC 1 24 25
Other-Network UC n/a 433 433
_______ ______ _____
324 911 1,235
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,117 3,537 31,995
BIO88 118 315 2,492
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 27 547
2-4 a.m. 9 16 334
4-6 a.m. 3 12 13
6-8 a.m. 46 149 820
8-10 a.m. 171 504 4,003
10-12 a.m. 235 660 5,018
12-2 p.m. 237 625 5,894
2-4 p.m. 243 769 8,299
4-6 p.m. 167 605 6,022
6-8 p.m. 69 347 2,703
8-10 p.m. 30 86 515
10-12 p.m. 19 52 319
__________ __________ __________ _________________
Total: 1,235 3,852 34,487
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 341 782 1,123
Davis 697 8 705
Irvine 13 0 13
Los Angeles 0 371 371
Riverside 13 28 41
San Diego 8 107 115
San Francisco 163 0 163
Santa Barbara 6 48 54
Santa Cruz 2 42 44
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 208 208
Los Alamos 0 0 0
Other - UC 1 74 75
Other-Network UC n/a 929 929
_______ ______ _____
1,244 2,608 3,852
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,876 9,420 12,296
Davis 8,047 91 8,138
Irvine 271 0 271
Los Angeles 0 3,174 3,174
Riverside 59 392 451
San Diego 25 1,221 1,246
San Francisco 1,183 0 1,183
Santa Barbara 12 790 802
Santa Cruz 1 337 338
Lawrence Berkeley 0 119 119
Lawrence Livermore 0 790 790
Los Alamos 0 0 0
Other - UC 4 695 699
Other-Network UC n/a 4,980 4,980
_______ ______ _____
12,478 22,009 34,487
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 2.3
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) 10:23
Average session length (minutes:seconds) 15:29
Longest session recorded (minutes:seconds) 350:52
Average number of searches completed per session 3.1
Retrievals per search - median 6.0
Retrievals per search - average 682.7
Retrievals per search - standard deviation 6133.4
Percent of searches completed with 0 results 24.2%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 68.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,389 30.9%
DISPLAY (excluding automatic displays) 4,140 37.8%
BROWSE 0 0.0%
HELP 172 1.6%
EXPLAIN 141 1.3%
SET/RESET 595 5.4%
SHOW 40 0.4%
ADD ON (AND, OR, AND NOT) 463 4.2%
LOGON or LOGOFF 1,352 12.3%
COMMENT 0 0.0%
SAVE 372 3.4%
USE 2 0.0%
OTHER 294 2.7%
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 1,034 28.4% 200 19.3% 28 228.1 913.6
TITLE WORD 731 20.0% 282 38.6% 4 477.9 4446.0
EXACT TITLE 25 0.7% 16 64.0% 1 9.4 14.2
KEYWORD 1,392 38.2% 284 20.4% 28 1670.2 10760.3
JOURNAL 85 2.3% 40 47.1% 1,500 3659.1 5379.0
EXACT JOURNAL 64 1.8% 29 45.3% 686 3145.9 4571.8
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 1 0.0% 0 0.0% 14 14.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 1 100% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 19 0.5% 3 15.8% 19 75.6 90.4
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
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. 9 0.2% 2 22.2% 7 19.9 22.5
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 5 0.1% 5 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 160 4.4% 28 17.5% 4 18.8 74.3
EXACT PE 36 1.0% 2 5.6% 3 13.4 20.5
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 82 2.2% 22 26.8% 15 997.7 5412.1
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 276 8.2% 102 37.0% 8 74.1 464.8
Single 3,087 91.8% 707 22.9% 22 1079.3 7748.5
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 2.5%
SHORT 84.6%
LONG 1.0%
TAGS 0.1%
FIELDS 4.4%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.0%
COMMENTS 0.0%
Other 1.4%
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 28.5%
2. First word of command is invalid 27.7%
3. FIND command with invalid index name 13.7%
4. PS command - no previous screen 3.8%
5. DISPLAY command contains invalid word 3.4%
6. DISPLAY command - no FIND results 3.2%
7. Search term missing from search command 3.2%
8. DATE search with unrecognized word 2.7%
9. Valid command at an inappropriate time 2.1%
10. DISPLAY command-record numbers too large 1.4%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.1%
2. LOCATE (BIO DB) 25.5%
3. FIND 11.3%
4. COMMANDS 5.0%
5. BIOSIS DATABASE 4.3%
6. Unrecognized term 4.3%
7. DISPLAY 2.8%
8. INDEXES 2.1%
9. ADDON SEARCH 2.1%
10. MAIL 1.4%
11. All others 12.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.6%
2. FIND command with invalid index name 13.1%
3. DISPLAY command-first of >1 screen 10.9%
4. First word of command is invalid 10.5%
5. DISPLAY command - middle of >1 screen 5.1%
6. FIND command with zero results 3.8%
7. PS command - no previous screen 3.2%
8. DISPLAY command-complete in one screen 3.2%
9. NS command - no next screen 2.6%
10. FIND command retrieves >1 book 2.6%
11. All others 19.5%
Ten most frequent SHOW requests:
1. HISTORY 64.7%
2. SEARCH 32.4%
3. SETTINGS 2.9%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)