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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:$ u. f$ P6 N. r8 i
to do-business , D2 p+ \& r  E' T9 d
rt random 360
4 D' y+ [) {8 \" X$ `+ K# _ fd 1
/ c/ ~$ i$ U1 J ifelse(other turtles-here != nobody)[
) @; C) B, ~; [2 O   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.( s+ B8 v, f# k/ M' m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + n. V) ?. Q( t$ m* z- p0 v1 }9 s
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ K. {  ?/ |- i% t. @   set [trade-record-one-len] of self length [trade-record-one] of self1 F6 c0 ?3 }$ j! g/ q
   set trade-record-current( list (timer) (random money-upper-limit))
% t# Y- j  x, z/ |5 {
* L- h: e, v3 u7 R* e问题的提示如下:6 m4 g9 h. F. L* O% M5 k

. w' J3 o: w, P4 R* x1 m. Herror while turtle 50 running OF in procedure DO-BUSINESS
/ A5 ]: d) ^! ]* A9 o1 e) S% e  called by procedure GO
( C* H& {, ]3 c4 ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 _+ J# B- `& F* F( P% ]
(halted running of go)- j, R; ]& y  P8 }

, w" Z6 ^( l2 ]这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
9 I% I+ R: }2 y- d另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
% n; z7 |6 p( m# Xglobals[
- i# B% C- `% V" w8 {xmax. b2 h  g7 M+ x9 M) P% l/ {( l1 ?3 D1 b
ymax9 Q( W9 `9 }) \$ p9 z8 c% t$ r
global-reputation-list
: r  D  a% e, u  J
6 q$ I& T$ [, k! @) ~4 N' y. c' X;;
每一个turtle的全局声誉都存在此LIST
& m# k! |( N5 q4 @9 }credibility-list
; r+ a2 N/ T& O- A0 b0 ]; I;;
每一个turtle的评价可信度
% T/ f* E8 ], H: \- s2 Rhonest-service0 A- i. ~, y2 ~* |
unhonest-service
2 Y7 r8 d9 H- g% ?oscillation
1 D' v$ T5 h# ^2 r; }  Z; ]rand-dynamic
  m) |" S1 t0 S1 E5 l' b]
6 B9 W- j6 F  [* S6 }4 O6 B2 K5 e; C9 u. G/ z0 s4 H
turtles-own[
7 L+ c& l+ a8 H1 L7 Ptrade-record-all# h# a  o$ {0 h+ o0 A7 s0 ]+ V( H
;;a list of lists,
trade-record-one组成* e& x* p7 f, A* o; b
trade-record-one
9 Z0 U8 \1 i( k' H) c1 k% k/ ?;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; g) Q2 `- R2 {; _- s1 O6 B' Y* |
3 z( y" O$ w% n  q4 ^7 u
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
: @) e4 G4 S5 E/ H4 s, e! ~$ G2 rtrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]  H1 S4 w. p! l: ]1 H+ l: v" L
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list1 v5 ~) Y& L" P5 R
neighbor-total
* s8 O/ f/ \5 B- Z;;
记录该turtle的邻居节点的数目
9 w* ?) K  ^, W1 Strade-time, G% C+ Q3 J9 t/ P4 k8 W
;;
当前发生交易的turtle的交易时间
( R8 Z/ @1 @+ w& h. C+ v: T/ Mappraise-give5 n- o8 b9 k5 X  F1 E, e
;;
当前发生交易时给出的评价: f7 S# w7 B/ U4 Z  ^. p* U/ p
appraise-receive
, j  ~0 U2 T7 X) X& P3 F& g7 u  K* k;;
当前发生交易时收到的评价
3 Q1 J1 B' ?+ @8 g, ^appraise-time
- G) e& v7 F- e) s4 @5 @  I6 o;;
当前发生交易时的评价时间  g3 P8 `" ^; G* i
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
, g9 j1 Z  m+ B$ s9 xtrade-times-total
9 O0 _/ i: _2 W7 {, y" t+ y;;
与当前turtle的交易总次数  l' v  H! D% b; O8 L
trade-money-total
5 R) W6 y4 C  D;;
与当前turtle的交易总金额
7 a! i5 v! W$ i; s3 B# N0 Mlocal-reputation+ _9 G, U9 ?! x' E
global-reputation
+ {: s8 Y5 d8 q6 N3 Xcredibility+ ]# F5 |1 p, M
;;
评价可信度,每次交易后都需要更新3 k+ \/ h) z! ~& R, f
credibility-all
0 _9 ?% t+ F5 ]9 A5 i1 g$ ?) C;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据3 {5 h3 d! u% e
* T4 w9 C" D/ w( @) t$ x
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
9 `" b4 t/ p7 c* a- K* Zcredibility-one7 ~5 z; N1 N- g; ~% I
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people7 x# G9 k; ?( b$ E) i
global-proportion( |6 C! B6 m5 C; c* |. c
customer
0 A& {  K+ j2 o/ Ucustomer-no
6 A9 P1 X* W0 p/ E; A5 ltrust-ok
, g- d5 X/ i, w0 Q% s9 a( E5 ?trade-record-one-len;;trade-record-one的长度
, C! |+ O) e' W" i]; e  K; G6 s. Z- Y3 l/ O. R: R
" e6 U7 d; Y5 r8 a* s
;;setup procedure
, r& H, D: W  @% Z3 W3 N
# B; {2 K* M2 W0 xto setup) a4 v/ s+ ], T3 _" D
/ n% u7 f) ?3 G; j& M. a
ca

5 h1 B4 P. k5 P/ @' [9 D% D) ^
+ f  p5 l* @6 C1 V8 S/ j3 uinitialize-settings

" }, _/ |, G' x( U6 w- S  t4 U
1 t5 H8 Q" [8 Ycrt people [setup-turtles]

6 q' T+ e3 M7 F/ c6 H8 F
2 u: D$ u" _& Y* Preset-timer
9 Q6 l/ n2 k  s: W- Q0 e& c/ k

: Q: Q5 k* g* H: x3 Bpoll-class

; \4 h# E, H, i4 O1 H1 ^  z! }; T) W, r
setup-plots

& [, i  \/ W# t$ x
, a! w5 o" R6 X  A: e+ [4 ndo-plots
9 t$ S9 s2 \/ |8 g
end, A. P7 R5 S$ H
- x8 s+ y- G. I. E9 |
to initialize-settings
9 y# Q* D4 E3 S( l2 T- E2 ^1 L  {/ w" R! i! C* {
set global-reputation-list []
( a7 w+ Q  E4 z5 r1 C: g
1 ^6 C' u4 S3 ~5 O* @! B" u& x5 S
set credibility-list n-values people [0.5]

; V$ @% D4 V4 ]" i: U. j% y2 c; H7 j0 B7 @/ u  A2 N6 V- q
set honest-service 0
. b# F9 i, X1 m4 a$ l' `  x! L
/ P- e4 d. s2 a
set unhonest-service 0
, B; j% }% M0 L. m

# U$ k( J- i3 y: R' i% i* fset oscillation 0
4 l% z' n# O0 q: k, S% a2 t0 Y5 k

3 d3 {( L8 b" N1 d6 qset rand-dynamic 0
* R! W% [1 k7 C; [7 b1 l8 E
end6 u. R. Q0 n" m  _: N- I5 s

$ z  @5 Q( x! f& y# Mto setup-turtles
. h/ t2 C) T0 c# m) Iset shape "person"7 H: d# b! d4 e/ I2 N
setxy random-xcor random-ycor* F3 W2 v+ N! E7 @
set trade-record-one []$ O8 f3 L2 I) p
! h+ P' G# _2 N2 K
set trade-record-all n-values people [(list (? + 1) 0 0)]
; ^# n% y( j  L4 o5 S9 g9 |

- c* `* a. u4 O& X/ [1 Nset trade-record-current []
9 Z8 i. D5 j1 U1 [set credibility-receive [], r- Z# a2 B( a
set local-reputation 0.5
1 _' S4 a9 X% yset neighbor-total 0
8 G) f8 w, j2 v' M2 l6 Q0 _8 _1 cset trade-times-total 08 |& m7 d4 K, ~' R
set trade-money-total 0. D* l) r, B1 W' C( ~) X
set customer nobody
; r# w# ?) U, x9 }0 n; j5 Vset credibility-all n-values people [creat-credibility]
0 f9 W1 u6 Q5 V% C% }set credibility n-values people [-1]  b- Z& t* v1 @; N7 \! {9 Q
get-color( H4 A. V$ }1 i* O8 M% o. d2 @, ^

' k4 U- K; u  |9 c( X9 |end4 D- A4 |8 r0 [2 u; y$ k
  }" `# _: ?* T1 z, h
to-report creat-credibility+ t/ A, E6 T/ A  t" y( j
report n-values people [0.5]+ k% p! @, V2 t
end4 r0 W7 \0 r& I$ a. @

3 L6 q5 h' f" C. B2 A- v& |to setup-plots" z$ C+ r6 o- T" \
5 b% m. a& B- ^. s" U* I9 @% a
set xmax 30

9 G5 K' w: G! m- N1 y6 K1 {- V4 _) ~! U0 O
set ymax 1.0
. R* ^4 ^, A6 I% F+ d4 I- e

  C$ C& s# x4 n* Q( I8 Nclear-all-plots

, H* f: f1 W3 }% q1 A4 S! g; [, G* U! v" E/ f7 F
setup-plot1

) N: n4 ^" w& x, k4 g! m2 k$ x% C% j' x2 J5 \
setup-plot2

6 t1 {( u; q& e$ P* M8 J, ~' i+ Y2 ?" s4 }1 W: P
setup-plot3

$ e/ v9 L' X0 Z( rend
8 c3 {# ?# M% ?! z* ~( c" g( u9 U" E$ ?' q! \; r) {
;;run time procedures% y9 _* I9 B" _& |) e0 U$ a# m0 A
- A: y; W8 r" b, \6 U
to go" R6 s3 q. L4 D4 E/ i
' N$ {% g& A: @& i) Q  D7 Q
ask turtles [do-business]
. I4 ?$ A) P7 W0 Y
end
# U7 z' r, P) h) N$ t3 [1 i3 u1 [, w( E3 w* l5 V, H
to do-business 0 _. _: q  H! ]
7 v  e5 m8 e# o/ Q7 m

" _2 c6 V. R8 n8 l" Xrt random 360

0 k4 Y, X& [. f- ~' j& N+ K- e/ F  ~% Z8 O. P& C
fd 1
5 f/ z6 D- T5 z5 d1 R

( \/ }! h5 L7 W% Z4 \7 r  Difelse(other turtles-here != nobody)[
2 Z# p# r5 A* D, s% I& C. |
4 R5 j# e, L! A+ `& C/ j! A. t
set customer one-of other turtles-here
/ [2 Z3 l) [; F

/ w7 k/ ]) X( l5 z6 b" D;; set [customer] of customer myself

, u1 o. T9 {1 {3 T5 h* m5 j4 U( F* S- T, J- {) v) \
set [trade-record-one] of self item (([who] of customer) - 1)
) }5 N% h) N9 g; ^* C$ U[trade-record-all]of self
  j" A. J8 C$ i& u5 x) O6 M;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 c3 Q' |; F, c: X) H  W  @7 R2 X3 `! C
set [trade-record-one] of customer item (([who] of self) - 1)
9 r! @' a2 Q! D9 K# d[trade-record-all]of customer
# i, I1 U1 i0 \
2 ?  U, y. {) p4 T% Q
set [trade-record-one-len] of self length [trade-record-one] of self

2 k) k; e0 v/ O7 P" b/ U2 N3 T  D0 C
set trade-record-current( list (timer) (random money-upper-limit))

: J6 l. l* k9 s! e# u4 m
2 O7 v2 G2 p- h) f$ \ask self [do-trust]
4 @6 }% G- B1 `+ E+ C* x;;
先求ij的信任度* W1 S' k) d  `4 R0 P
4 \  [. O% ]1 _5 e, y6 W# p
if ([trust-ok] of self)6 k! q" i- h+ T4 V
;;
根据ij的信任度来决定是否与j进行交易[3 q$ Q5 a' y! q* S8 O  q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 v) O* k6 x$ R; ^" C- E: f; K4 n! _1 T- p* g$ v: |+ `
[

0 P- m$ P: J8 U' ^
3 v2 P. ]/ H/ @do-trade

! H) Y. t! C- g6 Y2 T6 j8 E& l+ e  n3 p6 J# J3 O1 Q/ d
update-credibility-ijl

" j8 k$ D8 p. w: [
- \) @, @/ q; \9 x" T( ]: ~/ T! y# Oupdate-credibility-list9 f. u" \5 I9 h; W
7 r3 C$ G# r  `* G! j6 M! V
7 u) Y2 W2 J/ [. U, t/ I8 E4 z
update-global-reputation-list

# J! P& j3 E+ z% c1 J
  p2 L  |9 J% e3 t) E3 @poll-class
( o' S6 C) ^/ R
1 ~$ l# r. ~5 \3 l
get-color

. ^: p) p9 `6 ~# x6 C3 M0 S. d" w1 M, q, Q( X/ J& `1 _/ J
]]6 q+ ~: z- b$ g, w6 G* k  e; E' V" E

& w; L0 x4 W7 N1 X;;
如果所得的信任度满足条件,则进行交易% H3 |$ l. M  {2 A1 U& X$ Y. I
5 n/ n5 C, \$ e
[
" v8 l$ z8 G. y; x/ E/ k$ Q' Y
  t8 h& G# @  |: i% [/ y
rt random 360

( p' p* H% K0 |: i$ S, F3 r$ r0 N  O' R/ J8 X
fd 1
: k& X% v' O! ^

+ t4 W0 \. a" Y]
, l6 a! e8 O! D8 E* X
- N7 N( C  I5 Z, R
end

! J: h8 b7 P4 t) t% m( J! b1 h% F
to do-trust
8 h5 e: p0 s* {set trust-ok False' x% D- w$ m: d+ f4 `4 E: P
' M5 p- Y1 F2 G, i3 C: O# o
: f2 q3 ^% l, I: x
let max-trade-times 0
5 Y5 w" T! |. D4 qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 F+ R' Q9 B6 J
let max-trade-money 0. W# U; o1 a5 r$ Y! g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; G+ u$ G* T9 Q- T& Rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 l! r* Q) `, I  C& \5 a# x# L+ |7 I
) M+ Y8 U6 \$ A* @/ b
) U9 d5 W, b" [! o
get-global-proportion3 a7 F& E: m- k- }: t
let trust-value" Y6 K6 T' B4 H  m2 M
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) v5 z! \" ?5 Mif(trust-value > trade-trust-value)
  \$ Q, x, V2 B& [  C$ A" m& x[set trust-ok true]
% h8 o" h* S0 V) ?. w3 dend% @! c, v7 k2 {6 l

7 n0 y, L4 f- S" J5 y# `7 D$ }to get-global-proportion
; Z# L& c  \0 |3 @+ @ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- H  t3 p9 O' S8 `; v% h[set global-proportion 0]
# j1 l* d3 W& d1 l& |& l[let i 0
2 ~6 ?& E: n) {+ U% ~3 Clet sum-money 0( I; l6 }( F' L4 F9 y+ H- F% v+ F
while[ i < people]
0 t& H* W1 [  j3 h, I[- r' R' ~1 o  }+ q1 I
if( length (item i0 F" G& E6 l- e) f& r8 K
[trade-record-all] of customer) > 3 )
6 Z  |+ Q. Q! D+ {* K$ C$ @5 I
[' X. C( g  B& B7 G4 J; X" g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# K" }5 U$ Q: f1 R) {/ f) U]
0 c9 _% G4 E  F, \]
! M( N3 y8 O  F) p1 Zlet j 08 o  N3 {* w2 C6 E! C
let note 0% ]+ [5 v& q, g+ P% G& ]
while[ j < people]
! p" C$ S+ u9 f* J# k/ i[
8 _4 Y& Y; C7 g( T( `. D' Oif( length (item i9 A& d8 L& b  A2 O. O6 F
[trade-record-all] of customer) > 3 )

4 z+ B$ M# {7 t+ ]6 {0 F' f[
8 \; |4 R. e- K+ p3 x* n" a9 h) x* Eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 G, W8 E8 T8 R5 e
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- z; _; J6 z" T+ m- t0 Y2 Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" V: T- l5 {2 @6 [
]) g. o! d! ?8 S6 J
]' P; F5 ]& D* s1 u+ \
set global-proportion note+ q& S5 W# N3 A% `% M
]
! m. M0 U% {6 R7 T% B% d) f( send
9 A* D1 P3 a/ \0 o4 N
% \2 m3 W  V" }1 c4 l' M/ E; W( tto do-trade0 f) ^2 r# i& R5 _1 U/ Y
;;
这个过程实际上是给双方作出评价的过程1 u9 \: b$ ^& O* m' f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; y7 z% L1 X( b: h" s, N4 l0 E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( ~+ p% ?; k% B
set trade-record-current lput(timer) trade-record-current
0 M7 q: u6 ~% n  a, G0 G;;
评价时间
2 r; l' e" Q8 K7 O2 L+ k" hask myself [6 U, g- }5 w2 `! T+ b
update-local-reputation
6 J5 P4 S: M0 n4 aset trade-record-current lput([local-reputation] of myself) trade-record-current
; B0 [' b. D) s2 b# c7 Z]
7 W' q  B: g0 v' W# f% ~; Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 |) Y8 _% J2 M9 @# j
;;
将此次交易的记录加入到trade-record-one; @- l- |  K. j1 m5 n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( a% K) n! d, M6 s* T/ @let note (item 2 trade-record-current ), O" L, e7 b7 v# o
set trade-record-current0 j" W( Y$ T* P* c$ K: I9 t, e
(replace-item 2 trade-record-current (item 3 trade-record-current))
! j( {3 }) b+ k9 J$ u
set trade-record-current9 @& c5 J( [  Q/ I% r) f
(replace-item 3 trade-record-current note)
. f" M. w. g' m9 B
. ^& r1 F7 k4 ^( X5 J
& a$ a  K! N6 d4 V1 d$ u
ask customer [2 T" M" c+ o0 X
update-local-reputation
. t, R# Q1 I; k) yset trade-record-current* z7 \4 w( h# y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- H/ \6 ~/ J& a; J) B0 L: F2 R
]
0 x: y5 H& n; U, m( l2 {+ M9 {  \' s1 e4 l

/ \4 Z, }) t: @4 I; p4 O. `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- H/ ?4 X- r  P+ ^' V6 `0 C
3 y/ P3 y. V5 C& b' A
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( I5 e( g+ t, j4 i
;;
将此次交易的记录加入到customertrade-record-all
' ^( E9 b  K1 F/ h1 qend# f6 {7 X$ Y; ?9 F! F$ A! L/ K3 b
2 ?0 I5 a+ V0 m# q7 G
to update-local-reputation, b/ U8 m6 p1 X1 m
set [trade-record-one-len] of myself length [trade-record-one] of myself  ^, A8 T8 p3 {$ c% M- J

! z- b! ]* ~, H6 G4 u
: `3 P7 S8 f) }+ `8 K;;if [trade-record-one-len] of myself > 3
, `! U4 ^% d) ^9 O5 g. I
update-neighbor-total" l- n: f) N$ U' @* o6 W0 @% f- J9 Z0 n9 T
;;
更新邻居节点的数目,在此进行* A5 |3 e7 r7 z* M  {
let i 3
1 f; j, n( z* M, C9 nlet sum-time 0& r# ]0 @. I' j) I$ x  y
while[i < [trade-record-one-len] of myself]
) \# C# o2 P( q+ V[. ~/ y" S1 k; u/ X% P& v" T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, ~1 }, ?( G- w. z7 t4 S! Q' sset i: e0 D$ P2 z0 V' D5 I" i: {% M
( i + 1)

" v" {  G8 [. {* s% l! R]
$ b8 k: a, ~3 L& W) j+ u. `0 H6 [let j 32 G- N" |& m; r/ q9 D+ W
let sum-money 0
: j8 n6 I- U5 o1 ?% M1 \9 I! Dwhile[j < [trade-record-one-len] of myself]5 s( h) C/ c( I3 m9 X  D# x
[
4 X; A/ g$ a3 A& Iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( D! u  l6 L$ @1 k( U
set j5 l+ Y3 ?$ r9 P0 _+ }: D
( j + 1)

3 C3 z7 _3 a6 ^1 z1 E0 u/ F]- x5 }6 E' d/ P, l. Q) g* G# @
let k 3
, l# U' F/ H# g2 C: R5 y* x# e/ @let power 0
6 ?% @( _, @. o- M) |' \+ T2 z" f5 plet local 0
% j& s4 J8 S  D7 I$ A# a7 Ywhile [k <[trade-record-one-len] of myself]
; m& j; z- j* W* m, k[/ t# A6 c/ s$ Z
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
' T6 b* P0 X- |/ Sset k (k + 1)
7 x9 c0 Z& X' ?4 V]
  j& A+ B' U8 Z/ R% I  e$ r4 [4 K9 ~set [local-reputation] of myself (local)) n4 E. {6 L! I2 d' W+ T
end5 |. h5 y, _; V! T0 ^& V2 r
; n+ U& p6 v+ }+ e7 V4 ^! r
to update-neighbor-total3 K# f0 J+ p& t5 _7 V; N% x
, L  E+ B) n5 B5 u
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 N3 C5 L, K7 L5 k0 d

7 b$ g4 r' [  H& \9 t& ]2 }% ]
% Q, Q0 N* N) b4 S
end
( |9 m& T0 e; d; ], m) e
6 h' L' s: R# y1 E8 Kto update-credibility-ijl
8 j. N' h: e# m" u7 P8 l
! i" f! @* g$ L9 J) v: Z( _( _;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。1 G0 i! z8 \7 c$ u
let l 0
5 q1 J, A( W- N- Ewhile[ l < people ]
6 P# ^1 S/ H  D" J+ v% ^;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价5 x! f& D3 D7 w* f$ F$ F
[
5 C2 `/ L8 e( H7 @* [4 {let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ l3 O3 K: ?. T7 l* T, f/ sif (trade-record-one-j-l-len > 3)
. z5 N' t; m. o; Q7 q* T" T$ T! n[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
' R* Y7 O, j4 b) Z4 @5 [( G( q+ O5 ilet i 3
# g( K( X% x( f. Jlet sum-time 0, {+ ?# i9 Z/ a6 |: w
while[i < trade-record-one-len]3 u9 I! V! L  g
[5 b. h8 l. t) R, ^' x5 B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. D( F3 N7 n/ P& Oset i* @4 Y) I" V5 z& w% d
( i + 1)
' |8 b0 [( j6 x7 O3 `+ l+ O
]
1 c' t- N! @3 ~9 z+ |let credibility-i-j-l 0
& H" R1 r0 C+ {( k$ Q;;i
评价(jjl的评价)$ d5 q5 s9 ~; R4 V* }
let j 3. ?. n# M+ \  @1 b/ d, h( V
let k 4% j2 l* Y) ^& e' A& r
while[j < trade-record-one-len]
: Z; c; A  x! ]" U# O[
5 }$ v1 L, B# j# |! `9 P( Awhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉7 R7 `+ h: y1 M+ m1 i! M' o6 |
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
- G% C! o% n; `# J) g3 d. |% c) pset j$ A1 s0 |9 v0 k+ ]" ~# T
( j + 1)

9 t- c) ?- `6 i5 h0 |]
. D# n$ m8 t! [- h0 b& t  Eset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
: \" N3 w" M' g% ~% B1 P6 _/ H1 p
/ U8 k" ?$ p  S+ m( Q, b
9 H4 Q' Z. {% _+ B5 b1 b
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): y1 F2 g; M5 r) L1 ~
;;
及时更新il的评价质量的评价) J* N7 y$ ^* a$ O0 r# K& G4 z+ g
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. y: {8 @5 v3 f5 R; U! r3 @set l (l + 1)
: {* o. }% S/ O0 n" Q0 n]2 j1 u  D' W5 z9 K5 A. E1 q/ N
end
& J$ t& {, Z  l, B3 f
& l5 \5 k8 Z. L, ^1 o' d. Zto update-credibility-list, q0 R* b6 w8 v& |+ f
let i 0
+ N$ Y% b% m9 t/ r  @/ v/ ?/ Uwhile[i < people]
5 y  F% ~; S" G/ }1 x[
! `* R* R' ]' @% j6 }( e3 W1 Plet j 0( l' Q" `" P# Z9 H$ X. z
let note 02 _, k3 N% W( O, n1 L9 N  ^
let k 01 X7 S3 C3 T: @0 N4 w8 N( Y
;;
计作出过评价的邻居节点的数目
1 c: d6 s, W' z' [1 g) Iwhile[j < people]
) V) g1 F, \, v& w; t; q[6 G7 _/ i  g3 E
if (item j( [credibility] of turtle (i + 1)) != -1)( E& o3 m4 F4 B# N3 r
;;
判断是否给本turtle的评价质量做出过评价的节点
9 P, E; k2 d* A* Q( Z* K: z[set note (note + item j ([credibility]of turtle (i + 1)))$ [% ^- u  W4 ]
;;*(exp (-(people - 2)))/(people - 2))]
* w+ U8 F+ g/ b$ n5 Y" Y) q* ~, o
set k (k + 1)7 P0 Z' D6 k: G6 N
]! K4 |7 Z0 T' Q; J0 A1 ?7 T6 y
set j (j + 1)9 C5 o% W/ o  `$ G
]
1 W0 ~9 P9 \# D1 ?1 I% g4 lset note (note *(exp (- (1 / k)))/ k)
, B. A* C( ]) i+ y$ b2 R9 \6 ^" tset credibility-list (replace-item i credibility-list note)
/ ~7 a8 [/ Q; g* @6 F. B4 hset i (i + 1)
9 t% k( b% L$ z) ]' ^2 V" V]
! O# X$ t# m6 M. o3 i# oend8 v) N- _/ q6 }5 `( d  j) @2 N* e+ O
1 N5 Y5 {" N4 R
to update-global-reputation-list
+ B: A' a0 |! l4 L. Rlet j 0
" j# j) R- Y3 j" Y8 [; C- Nwhile[j < people]
' t* K! G, Z; W$ }4 S[
) |8 F, ^  F! N4 Ulet new 0# h  P- Y0 P$ t/ {4 }" V: t+ E
;;
暂存新的一个全局声誉
$ u  T- J. G( Tlet i 0
" b" w* N* o2 a8 W. i& Ulet sum-money 0
  P4 f2 o+ Z! [. i4 B; \; i8 v' {' Qlet credibility-money 0
$ v! V0 C! V" V" P2 Y/ awhile [i < people]6 U, u5 G9 G3 `, f, _
[
  X5 f6 l3 Q; q9 zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 P2 f3 y) ?8 q  G4 f
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) m2 }" Z% L) j1 p2 b6 D
set i (i + 1)
8 d7 h5 K" `8 Z0 }]$ @) e: |$ f: P: ~, _
let k 01 D! j/ ]- }& L
let new1 0$ V. _& d; o0 ~; p5 P# s; G0 E9 x5 v: d
while [k < people]2 U) f- Y1 Z" w. w% O
[
) Q3 ]8 j1 V! c9 jset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)3 r2 f- P* x8 e7 }- ^" l# v. k0 i
set k (k + 1)
' e+ j4 L" ]2 q]1 E( C* f2 C2 N9 E4 {4 c7 s  a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ }' f# u* {" d1 L; M9 mset global-reputation-list (replace-item j global-reputation-list new)8 S! q- q! g9 P( F& q
set j (j + 1)
( Z) h3 }& E5 {5 S! o- F]" X2 ~# l4 E: c7 L9 t
end
; r# V  k, p- R  O# ?3 v: N6 ~5 B
4 R/ F% X& v. u" [5 ~9 m

5 H. S: f' L0 I* d) n; kto get-color
+ X- S% V2 g5 \# n: ?3 K5 C2 @. l1 t* u7 b8 l0 y- Y
set color blue
' A8 l7 k/ k- K8 H' X& W- }
end7 v( U% D: B7 }2 T8 i4 a# D1 T4 x$ _

7 c, ]4 f/ g1 Z; U3 T7 }to poll-class, f' n2 [) m* q/ e+ a
end9 O- W: ]1 ]6 Y+ \6 Q& s( j& L
( Z' {6 J' r0 S
to setup-plot17 V9 f) B% r( |9 A% i" l

" j5 e4 ]+ v) U* Pset-current-plot "Trends-of-Local-reputation"
1 _% d; Y" r3 O' y# E7 X+ i

, G- V4 C) y" B3 R* iset-plot-x-range 0 xmax

( x) [" K- K6 P1 j6 E; Z! `0 L3 t# C8 x0 x$ h& z( P
set-plot-y-range 0.0 ymax
7 z) t$ s' l4 i5 G
end
( n3 i; |5 d0 k/ J8 \" t% A' M, L. }; V7 z( A* [, V
to setup-plot2
' K" U% M: d5 m% x. |8 c$ M- K: @: Y+ i+ N1 A! [8 B4 V
set-current-plot "Trends-of-global-reputation"
! f/ @/ B+ k% T; X. m. f* h' g

. ^3 U+ _! K6 I% p9 k3 @' cset-plot-x-range 0 xmax

/ F/ C. x. H7 `
, Q2 z6 r' d( N9 v! Y3 Mset-plot-y-range 0.0 ymax
# e% S6 P) ~, Y" p: }& O0 _- I
end
# H" B# y+ n1 |) |
0 n4 B. v) `4 f& a/ cto setup-plot3
) y. \' K. J) M0 d0 o; `
3 t9 V5 g* {1 L# _- u8 r2 @set-current-plot "Trends-of-credibility"

0 C+ O# r3 b9 z, V. h% i+ R' ?$ `8 j
set-plot-x-range 0 xmax
" {6 K3 \2 D. o. @7 v4 r( H, L7 P6 j

7 u3 ?5 L5 O* j9 o/ W0 Uset-plot-y-range 0.0 ymax
& K* y/ |) t2 z: k
end
, R  q8 r4 E& R; _! i6 o4 \2 k0 F4 r
to do-plots
6 _1 @% w7 @3 `4 N& {' j: P9 cset-current-plot "Trends-of-Local-reputation"
, ]2 }  O8 N0 bset-current-plot-pen "Honest service"1 J7 T+ B0 k; w
end$ t3 W9 Z& i% w8 i) z

- F, `4 ^: o0 E8 V  w[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
" X: S  N2 e5 T& [
( E6 z' x1 l( [6 |9 w  a' p这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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