MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 11/18/00 through 11/24/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 161 246 407
Davis 125 12 137
Irvine 43 0 43
Los Angeles 24 48 72
Riverside 24 17 41
San Diego 18 78 96
San Francisco 31 0 31
Santa Barbara 11 24 35
Santa Cruz 40 26 66
Lawrence Berkeley 0 15 15
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 8 8
Other-Network UC n/a 333 333
_______ ______ _____
477 810 1,287
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,151 4,053 39,951
BIO88 136 324 1,953
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 16 504
2-4 a.m. 12 43 341
4-6 a.m. 15 62 359
6-8 a.m. 43 147 1,128
8-10 a.m. 124 335 3,577
10-12 a.m. 222 574 6,468
12-2 p.m. 208 586 7,068
2-4 p.m. 263 1,311 9,231
4-6 p.m. 204 707 6,979
6-8 p.m. 88 284 2,127
8-10 p.m. 73 223 3,303
10-12 p.m. 28 89 819
__________ __________ __________ _________________
Total: 1,287 4,377 41,904
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 570 1,222 1,792
Davis 513 29 542
Irvine 124 0 124
Los Angeles 61 165 226
Riverside 99 44 143
San Diego 84 240 324
San Francisco 91 0 91
Santa Barbara 44 59 103
Santa Cruz 159 68 227
Lawrence Berkeley 0 46 46
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 10 10
Other-Network UC n/a 746 746
_______ ______ _____
1,745 2,632 4,377
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 8,011 11,781 19,792
Davis 5,084 281 5,365
Irvine 1,385 0 1,385
Los Angeles 305 1,186 1,491
Riverside 731 489 1,220
San Diego 571 2,091 2,662
San Francisco 862 0 862
Santa Barbara 440 890 1,330
Santa Cruz 971 549 1,520
Lawrence Berkeley 0 186 186
Lawrence Livermore 0 66 66
Los Alamos 0 0 0
Other - UC 0 72 72
Other-Network UC n/a 5,953 5,953
_______ ______ _____
18,360 23,544 41,904
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 2.7
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) 8:53
Average session length (minutes:seconds) 14:53
Longest session recorded (minutes:seconds) 560:47
Average number of searches completed per session 3.4
Retrievals per search - median 13.0
Retrievals per search - average 802.7
Retrievals per search - standard deviation 8002.4
Percent of searches completed with 0 results 19.7%
Percent of searches entered that are long 1.4%
Percent of long searches completed
(includes partial results) 77.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,719 29.4%
DISPLAY (excluding automatic displays) 4,954 39.2%
BROWSE 0 0.0%
HELP 182 1.4%
EXPLAIN 199 1.6%
SET/RESET 559 4.4%
SHOW 36 0.3%
ADD ON (AND, OR, AND NOT) 658 5.2%
LOGON or LOGOFF 1,561 12.3%
COMMENT 0 0.0%
SAVE 359 2.8%
USE 2 0.0%
OTHER 423 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 1,089 25.8% 200 18.4% 19 147.4 552.2
TITLE WORD 628 14.9% 222 35.3% 11 555.5 3135.9
EXACT TITLE 34 0.8% 16 47.1% 10 44.8 81.2
KEYWORD 1,752 41.5% 275 15.7% 35 1588.5 12341.5
JOURNAL 143 3.4% 52 36.4% 253 5502.4 21270.6
EXACT JOURNAL 61 1.4% 23 37.7% 473 2350.2 5013.7
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 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 7 0.2% 0 0.0% 3 707.7 1225.6
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 15 0.4% 4 26.7% 14 187.2 482.4
LANGUAGE 4 0.1% 1 25.0% 147 143.0 140.0
ADDED 1 0.0% 0 0.0% 40 40.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 141 3.3% 5 3.5% 23 51.6 73.1
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.0% 1 50.0% 288 288.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 196 4.6% 48 24.5% 4 464.7 3827.1
EXACT PE 39 0.9% 5 12.8% 2 25.4 90.2
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 112 2.7% 15 13.4% 25 295.1 945.9
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 487 13.2% 97 19.9% 11 83.4 324.5
Single 3,209 86.8% 671 20.9% 33 1316.3 10418.2
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 2.9%
SHORT 85.4%
LONG 1.0%
TAGS 0.2%
FIELDS 2.9%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.2%
COMMENTS 0.0%
Other 2.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.1%
Ten most frequent errors:
1. First word of command is invalid 30.7%
2. NS command - no next screen 28.9%
3. FIND command with invalid index name 9.6%
4. PS command - no previous screen 5.4%
5. DISPLAY command contains invalid word 4.0%
6. Valid command at an inappropriate time 2.8%
7. Search term missing from search command 2.4%
8. NS of SHOW/EXP command-no next screen 1.3%
9. Max. # of ports to a Z39 db are in use 1.3%
10. DISPLAY command-record numbers too large 1.1%
11. All others 12.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 22.6%
2. GUIDE 18.1%
3. FIND 10.1%
4. COMMANDS 9.0%
5. Unrecognized term 6.5%
6. MAIL 4.5%
7. BIOSIS DATABASE 3.5%
8. INDEXES 3.5%
9. ADDON SEARCH 3.0%
10. DATABASES 2.0%
11. All others 17.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.7%
2. First word of command is invalid 13.9%
3. DISPLAY command-first of >1 screen 8.9%
4. FIND command with invalid index name 7.9%
5. DISPLAY command - middle of >1 screen 5.8%
6. FIND command with zero results 5.5%
7. FIND command retrieves >1 book 5.5%
8. DISPLAY command-complete in one screen 5.0%
9. DISPLAY command - last of >1 screen 4.2%
10. NS command - no next screen 2.1%
11. All others 20.5%
Ten most frequent SHOW requests:
1. HISTORY 56.3%
2. SEARCH 25.0%
3. SUPERTAXA SETTING 3.1%
4. SETTINGS 3.1%
5. BIOSIS NEWS 3.1%
6. B902 3.1%
7. GLOSSARY 3.1%
8. MAIL STATUS 3.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)