MELVYL ABI DATABASE TELNET STATISTICS
Time period: 03/01/02 through 03/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 162 168
Davis 45 0 45
Irvine 49 0 49
Los Angeles 1 78 79
Riverside 1 2 3
San Diego 4 29 33
San Francisco 10 0 10
Santa Barbara 1 4 5
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 0 12 12
Other-Network UC n/a 117 117
_______ ______ _____
117 409 526
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 41 230
2-4 a.m. 2 20 260
4-6 a.m. 3 8 8
6-8 a.m. 22 82 780
8-10 a.m. 59 153 1,317
10-12 a.m. 110 274 2,644
12-2 p.m. 75 205 2,512
2-4 p.m. 100 311 3,050
4-6 p.m. 59 140 2,505
6-8 p.m. 21 55 573
8-10 p.m. 18 48 818
10-12 p.m. 45 436 1,230
__________ __________ __________ _________________
Total: 526 1,773 15,927
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 4 761 765
Davis 95 3 98
Irvine 172 0 172
Los Angeles 1 202 203
Riverside 2 4 6
San Diego 9 123 132
San Francisco 27 0 27
Santa Barbara 0 25 25
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 16 16
Los Alamos 0 0 0
Other - UC 3 43 46
Other-Network UC n/a 283 283
_______ ______ _____
313 1,460 1,773
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 154 4,789 4,943
Davis 554 45 599
Irvine 1,601 0 1,601
Los Angeles 2 1,967 1,969
Riverside 26 4 30
San Diego 9 654 663
San Francisco 268 0 268
Santa Barbara 0 511 511
Santa Cruz 0 0 0
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 325 325
Los Alamos 0 0 0
Other - UC 6 369 375
Other-Network UC n/a 4,643 4,643
_______ ______ _____
2,620 13,307 15,927
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 1.0
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 ABI Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 10:01
Average session length (minutes:seconds) 15:40
Longest session recorded (minutes:seconds) 977:12
Average number of searches completed per session 3.4
Retrievals per search - median 2.0
Retrievals per search - average 604.1
Retrievals per search - standard deviation 6451.1
Percent of searches completed with 0 results 40.2%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 78.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,625 31.2%
DISPLAY (excluding automatic displays) 2,171 41.7%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 73 1.4%
EXPLAIN 54 1.0%
SET/RESET 219 4.2%
SHOW 4 0.1%
ADD ON (AND, OR, AND NOT) 148 2.8%
LOGON or LOGOFF 660 12.7%
COMMENT 0 0.0%
SAVE 119 2.3%
USE 0 0.0%
OTHER 137 2.6%
2.1 Article Text
_________________
DISPLAY TEXT commands 172
TEXT included with CONTINUOUS, PRINT, CAPTURE, or SLOW 21
displays or when any of these paging options is set.
TEXT included with MAIL commands 0
SET DISPLAY TEXT commands 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 761 35.8% 436 57.3% 12 48.8 169.6
TITLE WORD 271 12.8% 97 35.8% 7 205.5 1269.4
EXACT TITLE 16 0.8% 8 50.0% 3 8.6 13.0
JOURNAL 52 2.4% 20 38.5% 302 2770.9 7026.4
EXACT JOURNAL 51 2.4% 14 27.4% 20 675.2 1718.7
SUBJECT 90 4.2% 55 61.1% 1,885 10908.2 36635.7
EXACT SUBJECT 8 0.4% 4 50.0% 120 2796.0 5431.8
KEYWORD 339 16.0% 50 14.7% 74 1742.9 8617.7
PUB TYPE 1 0.0% 0 0.0% 409 409.0 0.0
DATE 47 2.2% 11 23.4% 10 242.3 588.0
ADDED 363 17.1% 351 96.7% 1 1.2 0.4
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
GEOGRAPHIC NAME 0 0.0% 0 0.0% 0 0.0 0.0
SUBJ CATEGORY 0 0.0% 0 0.0% 0 0.0 0.0
COMPANY NAME 34 1.6% 8 23.5% 24 891.5 3423.2
EX COMPANY NAME 0 0.0% 0 0.0% 0 0.0 0.0
DUNS 0 0.0% 0 0.0% 0 0.0 0.0
TICKER SYMBOL 1 0.0% 0 0.0% 1,027 1027.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 60 2.8% 8 13.3% 3 23.7 87.7
EXACT PE 22 1.0% 4 18.2% 3 6.8 10.6
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 7 0.3% 2 28.6% 161 152.6 145.0
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 501 30.9% 387 77.2% 3 405.6 2338.4
Single 1,119 69.1% 294 26.3% 22 1218.2 9361.4
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:
SUBJECT 1 100% 0 0.0% 1 1.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 89.0%
LONG 0.8%
TAGS 0.0%
FIELDS 2.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 13.2%
Ten most frequent errors:
1. DISPLAY command - no FIND results 45.3%
2. NS command - no next screen 21.3%
3. First word of command is invalid 14.3%
4. FIND command with invalid index name 7.1%
5. DISPLAY command contains invalid word 2.7%
6. PS command - no previous screen 1.6%
7. Valid command at an inappropriate time 1.1%
8. DISPLAY command-record numbers too large 0.9%
9. Add-on search, no index name after verb 0.6%
10. Command contains escape or arrow key 0.6%
11. All others 4.4%
Ten most frequent EXPLAIN requests:
1. GUIDE (ABI DB) 27.8%
2. INDEXES (ABI DB) 16.7%
3. COMMANDS (ABI/PSY DBS) 9.3%
4. ADDON SEARCH 9.3%
5. FIND (ABI DB) 7.4%
6. DISPLAY (ABI DB) 5.6%
7. MAIL 5.6%
8. MAGS TEXT 3.7%
9. MAGS DATABASE 1.9%
10. ABI/INFORM DB 1.9%
11. All others 11.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.9%
2. FIND command with invalid index name 16.5%
3. First word of command is invalid 15.0%
4. FIND command with zero results 10.2%
5. DISPLAY command-first of >1 screen 7.1%
6. PS command - no previous screen 4.7%
7. Add-on without index name after verb 4.7%
8. 3 HELP commands issued from same code 3.1%
9. DISPLAY command - middle of >1 screen 3.1%
10. FIND command retrieves >1 book 2.4%
11. All others 14.2%
Ten most frequent SHOW requests:
1. HISTORY 100%
11. All others 0.0%
ABImm/dd abi MELVYL ABI DATABASE TELNET STATISTICS (weekly)