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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:
* `7 k4 T5 I% H; ?# ~to do-business
0 p! Y! q1 B! B1 y/ s- E  j$ K rt random 360
# {; e! L7 j6 i& \" G" k/ \3 Y5 e fd 19 G3 E# `3 P( L4 `" J
ifelse(other turtles-here != nobody)[# g/ @7 \# d' ~  l6 M$ w7 m
   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., R# ^/ X' F* w8 V+ p
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, T# U. u! h7 z, ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, F# E! |$ t7 v( `8 z3 K   set [trade-record-one-len] of self length [trade-record-one] of self6 ~8 e" E9 w/ ]) Y
   set trade-record-current( list (timer) (random money-upper-limit))8 P1 x( Z6 T8 v$ h& s; A8 w# k
1 f/ H  X! b7 o$ k% q+ E0 M9 s
问题的提示如下:9 F1 P/ H; s9 A6 K( v- M5 B

7 w  {+ m! [$ R0 {6 n- rerror while turtle 50 running OF in procedure DO-BUSINESS& [( v' f! y+ v. [0 l- F: W- a
  called by procedure GO6 F  U/ x7 A3 ~3 W' P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. Q2 r! ?% q- O9 n8 J8 @
(halted running of go)
' r5 M, r$ E4 b+ ^$ {7 P  t* M, M2 Y" Z1 N% J
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~~$ R* Q# P- a, M, F
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
0 H- _6 u5 k4 L5 s' oglobals[
) s5 z' K* x. M$ wxmax
0 ~# m+ T6 |* j4 r  pymax8 I) I9 S2 S! m* i& }/ _9 b# y3 }+ b( m
global-reputation-list
8 q" K, l/ y2 G: W7 ?$ D0 S
( B+ s0 D% m# D4 \* j9 o, s( J;;
每一个turtle的全局声誉都存在此LIST
: z1 l. Y  b! k3 H6 r3 mcredibility-list- _$ X  b+ B* t. d# L5 a
;;
每一个turtle的评价可信度
( D' v& x8 L' W9 x( s) Thonest-service
0 ?) t! D2 G3 D) s. P* Vunhonest-service# ^' V6 s5 ]  i* |
oscillation
4 t$ N( j0 H+ o, o. _rand-dynamic
$ x$ m, w7 z& Q4 v]1 L1 V1 r4 O& S8 F! Q
% y. `- o& V5 q$ n: g
turtles-own[
/ X# J1 I! v1 Xtrade-record-all' P5 Q" g; V3 e8 Q0 Z( x
;;a list of lists,
trade-record-one组成) R# \" v  O  ~# Y! `* P9 `
trade-record-one
  h. F* ^4 @0 r  i/ H6 f" v7 _( Q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* Q) A0 s  O: l0 t3 r" I0 T) N0 y5 m7 {6 o
;;[
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]]
6 L7 O% G% V( u2 t( {% |. {4 x9 \trade-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]
( ^; z: E0 |, Qcredibility-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list
, |5 }% m8 ]; @+ l* s  C; {neighbor-total
8 D- r( f1 M6 d4 n;;
记录该turtle的邻居节点的数目: J4 m9 ~: r4 x, N+ Q! m9 d& }
trade-time
4 K) E1 T- S% M3 y* p; n7 K& o/ B" S* ];;
当前发生交易的turtle的交易时间
. r( ]; A) Z' ~2 }% Yappraise-give( i8 c# K: q1 _* G8 b1 I
;;
当前发生交易时给出的评价
8 K+ z' _/ H. J  H/ c% Bappraise-receive
+ w! F) c8 d7 p: ^. x, U# n;;
当前发生交易时收到的评价
- K0 r+ w8 B5 Z: g: j( Cappraise-time& ^( s/ v% e; n) l: f; I4 ?
;;
当前发生交易时的评价时间
* I/ N3 O+ A- h" I& zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉0 R  o: J0 H0 I' W  x5 A
trade-times-total
1 Q/ q# B) n. Q' {3 \: C;;
与当前turtle的交易总次数
! k- Y) b" Y$ a+ c* L, l+ Ntrade-money-total
) H7 o2 }% x/ w, \  K7 ?, C; Y;;
与当前turtle的交易总金额
' r1 q+ X+ n; o& Y- h0 Klocal-reputation
- I: u) Z# S, `  H* S* nglobal-reputation7 n# K' t2 g4 w2 f1 M, [, j
credibility
2 [9 ?& H+ ?/ ]$ E;;
评价可信度,每次交易后都需要更新
6 O) w/ _* d* J/ hcredibility-all8 `( M7 m9 I5 H. M0 ?
;;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  }1 ]; D) N: c! C

! L; k6 L2 i4 t;;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0.57 J  y1 t! H) d2 K. C9 c
credibility-one" {6 g/ ~+ d( t/ Y. B6 Y3 h  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people4 Y1 ^: \& m. l( {, j3 D( K1 h2 Z
global-proportion
5 i! b- L8 _$ ]' z1 lcustomer
: t. d- P' h$ z! q6 u+ ^customer-no
) Y# m" L3 R6 \. Q) M4 e- y4 ^: v$ ^trust-ok
. n9 g! U( X, J" _: J  u6 B  ptrade-record-one-len;;trade-record-one的长度5 ]$ h' K1 r' l9 N
]* W& z" g2 r$ ~# Q2 l3 h

8 m" z% j( T! t" D;;setup procedure
2 F, @: L1 v7 [; P4 ^! I0 b) x7 g- R# H9 m& j9 V& j
to setup
% }  ?" o2 {9 _* d# N- ]
/ d0 k) h0 B' [ca

1 K# C. e7 A$ I7 j# t& G4 Q2 Q: V$ `
initialize-settings

* F7 h4 z  ^' m
+ {' C& K$ X1 w/ [2 M- u5 ^* W1 K% p- ^crt people [setup-turtles]
- |7 S+ Z0 U' e2 R& y( }7 h

+ ^8 j8 g4 ^$ G# Q: G  V7 Nreset-timer
+ m0 u2 j" n' M; j8 D
% R1 Q, ]/ s' w3 ~1 t
poll-class
1 q" I% {, R+ d8 |% T0 o
1 s8 {, W3 V, K; U+ D8 Z
setup-plots
+ ^% R# r( x3 |

) h+ j9 K. K  `3 g# \do-plots

( Y& X3 I& `/ i( y$ Dend
  Z; T. u8 }( V& M+ n+ b& {  B' l4 k& I/ Z' R$ W9 }
to initialize-settings
; g7 `, k: [" I5 j0 o/ p9 {1 x- O% I, |4 C( K$ b8 M3 w
set global-reputation-list []

" M; B! r' _% f( `: O2 d+ i  a2 A& \$ ~# s8 C
set credibility-list n-values people [0.5]
; `/ r# X# i& ^# e+ Z* M1 [  T
; l3 z4 x* N. N9 G( Z
set honest-service 0

* f: \1 [$ b# k9 N7 [7 P9 N8 z5 y: K$ G  W5 {3 e0 f3 ^# E8 p. c
set unhonest-service 0
; V# f0 v- k1 S
5 J: a/ A2 l! ~3 ~. [+ u* n+ b
set oscillation 0
5 j* p' ]6 l/ w

& t1 E" |( ~- |, lset rand-dynamic 0
* ]7 y# m! Q) A
end4 F  i; e0 I( b

" n. X+ a7 n0 b: I& K- Hto setup-turtles
1 i) S+ S/ z; b5 f' nset shape "person"
0 a( }" Q8 @9 d' X) G6 O  ysetxy random-xcor random-ycor
7 K2 b( h$ ]& U: S) s# h+ |) ^) z  Sset trade-record-one []
9 V' X- s# j" n+ A' J! h$ u

) L' Q5 O. F3 a$ yset trade-record-all n-values people [(list (? + 1) 0 0)] ! c, o3 B' q: b
+ M4 }, F( A1 \+ ?; T
set trade-record-current []9 g- ]- T; f3 x# Y4 S$ T
set credibility-receive []
6 v* i1 w* z1 M2 n" f- Wset local-reputation 0.5
9 y$ ^- W2 _6 J# Jset neighbor-total 0* A" T, L& \: q" ?+ `
set trade-times-total 0. v3 n5 t' W- ]/ b/ {( {$ l
set trade-money-total 0
6 C7 d, P. d/ h: iset customer nobody
2 Z: G! m# E- dset credibility-all n-values people [creat-credibility]- O  S" u7 K& j" f8 s  z# p
set credibility n-values people [-1]0 w3 @5 T4 q6 A  Q
get-color/ \6 u" p" W# j8 b3 Q( f9 v8 o3 \
( a4 q3 U1 ]/ `8 ]9 j/ H
end9 o+ V3 x) L, R4 ?4 d

, P0 P) V( }+ M0 q4 B. lto-report creat-credibility& ~9 a5 o& f: e4 V( \$ T
report n-values people [0.5]
/ r+ Z+ g* N; H( j7 `; t3 l2 b+ b, Eend
7 v7 b- V$ O, M6 t! b4 j! I0 C: R5 [$ s
to setup-plots8 z1 a& ^+ \4 S" U

/ r/ }. y& N  h0 p. d. o# k- \3 lset xmax 30

! O* x" D6 v4 K' j# R3 z) |. U$ _* c- P& X  k* n. I$ O: w
set ymax 1.0
9 U/ M& Q9 L4 r# \

4 Z' C* `# U9 }clear-all-plots

* N, _3 W; p* N! L* p! q. k' d; E3 v& R: P9 ?/ B
setup-plot1
9 z7 w" m. w% P' l/ \0 u
* B/ n- U* V) `
setup-plot2
/ A6 F- _% ^% Z# U; c$ b5 j

( e1 p4 }1 O2 e# |2 ?setup-plot3
& I6 S$ d/ X# \$ H7 y7 |) A
end1 I& z5 E. ~6 Z. C' l, l: u
8 m& [) |: ?+ @  R% P
;;run time procedures% O" b1 s( }4 Q* V6 w/ ]4 B

! [& e6 P; w3 U4 u- \+ Ato go5 ]: n9 {4 I& @* e
, w1 t! C: H/ y6 j- l
ask turtles [do-business]

8 E8 o, ]% M0 ?+ N$ a& f! \end; h! `7 m( K/ @  Q6 t

' m. k$ C  Z3 Z2 K9 Rto do-business
" N, R* U) y/ X  P* N7 ]; l( ?

, p% x; S7 n* G3 h- d& T4 l/ M  r: d
rt random 360

" Y* m6 A5 f; t3 ^+ N+ w/ G1 R3 T; u- i, Q/ X4 Q* h/ U+ q: E" a
fd 1
/ E# A. M+ O* ^7 {/ x4 I& Z
  j4 ~* _3 F% y
ifelse(other turtles-here != nobody)[

# C3 O0 Q- H: E& \  Z, u/ h+ g) c; ?: c- L" f. a- z7 C9 X/ s
set customer one-of other turtles-here
! G# b( a: |4 {3 S4 \8 F& i

# O, K3 s7 a( _;; set [customer] of customer myself
  M4 \: p! _, }$ b$ r3 o- M
; `- K$ W5 H. c1 o( [" O( I
set [trade-record-one] of self item (([who] of customer) - 1)* ~# q& X9 w! h1 p& p
[trade-record-all]of self: ?* b+ B5 }7 C6 d, S1 u) U
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( r$ Q5 R/ u4 g) H

  E( {9 |  Z( d9 Iset [trade-record-one] of customer item (([who] of self) - 1)$ M. X/ c" G$ u: {6 O; o
[trade-record-all]of customer
& e: |4 ?  ~! ~* n  ]6 |* A
( D8 @* t3 Q- O/ e) `1 ~
set [trade-record-one-len] of self length [trade-record-one] of self

1 ], S2 X" `2 X0 I$ Z. @" W; e' K
& Y! u- z- _- l0 |" l% Q4 E( Z5 s- Cset trade-record-current( list (timer) (random money-upper-limit))
; e4 F6 \. {8 a6 O8 T
' M' i9 A* W, ^; F. ^9 F
ask self [do-trust]
' Q2 T- e1 I8 a4 [% k+ G% X;;
先求ij的信任度
9 E7 H" h. a. W& w  v' m$ H- o
& b( @/ i  J' b0 z5 m/ G3 H( Qif ([trust-ok] of self)' P5 ]; F( q$ n! E+ o9 g+ e
;;
根据ij的信任度来决定是否与j进行交易[8 x2 [# e9 s$ v+ o) l+ s& ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 }- r' s  T! X) Y, ^. u
' o6 v0 v* ]9 }; ~" J( P
[
1 c" o! `+ |9 J* x* E

- L; K( P$ d, v8 D+ _  D3 Tdo-trade
) n( o. c3 [: N
% u( L2 R/ c& h* f" T0 H" a! S
update-credibility-ijl
% d4 e9 U# \4 U- @+ a3 v

0 X/ o! v. G' t' g, qupdate-credibility-list0 g. U8 X$ Q4 i0 p; n3 q$ N

" e  V0 X. l' A; y$ U9 y3 r2 T! f" e# S7 h
update-global-reputation-list
, _# t+ E: W- @+ t! u- x! \
) o. {6 ~0 r8 Z: x3 _
poll-class

+ ^" z: K2 i# q9 `& ^( X6 G1 a  W9 N0 [. Y
get-color
$ M" j5 ~0 g, f' n& o- G. G/ ?. y( a1 [
0 F- Y0 ?8 U( d  V3 {2 ]% \
]]
& w; f6 a6 O% ]- Y! }$ n1 @  X2 t6 X9 R5 D/ [
;;
如果所得的信任度满足条件,则进行交易
: _: C$ L) y+ X; W/ j6 f9 S
. R- \0 f+ U5 B3 f* \[

; T- [. j/ Z+ i4 [9 M1 f6 z
1 o3 \1 X1 M2 Z4 Wrt random 360
7 a4 I# o3 z8 B5 ]9 }5 A, t
; G: n" h1 ]1 C( t
fd 1

9 Y& U, _$ s5 \; w; ]) e: T+ M" ~+ n3 ^+ N% R5 i9 H% ^0 h
]
9 L6 m* c7 y  J2 n6 b
/ g( |! N/ y0 n9 H( f/ ]
end

1 Z, ?  E/ {1 O& ]; n7 }2 U
  o. O* C* }7 G/ v, D7 N" o% m7 {to do-trust
/ s' ~0 D% _/ E+ E' pset trust-ok False
  }. X2 z# K1 h
+ g6 Q" Z0 j. e3 `
' F- e: J9 r8 \" z5 X; H
let max-trade-times 0
* S4 j* D* C2 U% |' i7 g' aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 P$ d7 c  E1 q! K, J
let max-trade-money 0; }" ~* ?! S1 }" X0 t" {. U( g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 ~1 s' G# C9 _: `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 |. }+ F! V' H$ z

; r5 |( c, J( Y& @- Y
0 _, q, |$ M" D  V+ P8 N9 L
get-global-proportion6 O# r; Q. w6 C% i0 M
let trust-value+ s. L  v5 ]# P
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)
2 h3 L* B$ T$ r0 v* \% m8 Z" {( e$ M
if(trust-value > trade-trust-value)
! R2 B! |: z/ Q) L- N[set trust-ok true]! t' b/ V: Z/ [  \! E% E
end# H4 P( E6 D& q0 P, [+ J
& z" X' O# B) o
to get-global-proportion
8 @5 E+ e% e7 Nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 s6 S/ I# D: w; ]2 i1 S( g
[set global-proportion 0]
9 E, v  I9 @# A[let i 0, q! v/ j7 e9 P6 b/ U+ s
let sum-money 02 c. }& c3 k3 D# M
while[ i < people]1 I! j* [1 D5 _) e2 }& u
[% H2 ]$ B4 W6 A0 I9 N: T
if( length (item i) g3 ~0 b7 p! I) o$ W; d' z5 U! C
[trade-record-all] of customer) > 3 )

. f( \4 m& @1 l$ }[7 j' R! o9 ^3 o+ v! V- u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
* K% p! P! K& {" p; \) D8 H0 r$ c]1 }: k, R  h9 a# G9 w' X1 \1 i
]% Z4 M6 J7 g3 ]( H, T/ q
let j 09 x4 T7 Z) ~  y
let note 0) v( b5 k1 m8 g0 a. L/ `) n
while[ j < people]
3 f" z! D  H+ E! O9 d4 _3 T[
! R, _: C* f5 |0 [if( length (item i" F, d: N* h4 j
[trade-record-all] of customer) > 3 )
6 H6 h* t7 J- [8 S
[' l, u2 E7 \: M: O: z. g, y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) g0 r8 a. K, q, N. m: y! s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 s* y: [6 w) E4 b3 `3 m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" X5 k, u/ ]! U) [0 f* g' o]6 ~7 a8 f, c% D8 s5 _: T4 X& o
]( t' l, m4 y+ Q% f; [  l- {. g$ r
set global-proportion note6 n# V  n6 Y( K! z0 ]5 N% f
]0 j/ h, n: H; X% ~3 f
end4 ^1 {' |1 q& B$ t5 R* i) ]; L

1 W& H$ c( n1 B7 Tto do-trade9 Z6 L- G# l* B8 V( X; C5 O1 n
;;
这个过程实际上是给双方作出评价的过程5 S9 n7 \) _, X7 {0 X& A! l. e* C( c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 c" ^6 {$ G# h, ]/ P" g' ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% j0 Q7 D/ W: m) Y
set trade-record-current lput(timer) trade-record-current
5 j9 `' A  F8 U  s( b4 {$ R;;
评价时间
* _) {! ^/ M; J& D# E' Lask myself [
+ R0 H/ w7 F, G2 q5 rupdate-local-reputation
" I/ b! \1 \' r# jset trade-record-current lput([local-reputation] of myself) trade-record-current
/ C+ X1 d8 a9 e8 m" m4 U% ~" j. g], B7 K# r1 d7 z4 {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# w; D2 V" C8 h0 ?$ Z2 S
;;
将此次交易的记录加入到trade-record-one
; G( D; o* c$ I* T. x& d5 `set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: K1 \! ^) g1 g3 K( Tlet note (item 2 trade-record-current )
) z* J8 D5 H/ g. |, Zset trade-record-current# q1 q5 e1 V# P5 {# \# r( n
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 P3 s7 Q7 H) q7 W0 l& F) }
set trade-record-current
  D& S6 @% ?* Z(replace-item 3 trade-record-current note)  J" q9 ?( c9 E8 o1 W- J0 Z- n

  Q! Z( y, _$ n; ~* E. M$ ~. x
8 B. [  B2 k" t/ {7 B! w: s/ e' I
ask customer [1 D; G, G" L+ N, G0 J- E
update-local-reputation- ~. H) [& d; {* S7 W
set trade-record-current1 a2 c, ?: Z& q* T6 `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. _4 \: O( n' {. S4 {2 e, O5 p]
; _7 l- }/ M, a1 ~: n* J2 j& O7 I( N' K; Y/ E& w
6 p" @) A% ~  V" l$ X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' Q/ F0 J0 E' H$ |. ?1 @. R

/ B# N3 ]8 J" U* ^1 }set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ ^" n8 I# y. g/ B;;
将此次交易的记录加入到customertrade-record-all4 D  L. U2 z7 `" j. J
end" W* h- b7 P+ D* c8 X5 S  q  i
  M+ x6 ~  i% h8 R% Z1 Y% ?& U& w( ^
to update-local-reputation  `. w4 _# L& H0 D' d7 a
set [trade-record-one-len] of myself length [trade-record-one] of myself
5 y8 g, U9 n: D* d* Q$ Q7 o: W8 Y4 c" s" e  O, s

! `3 s/ D, {' s. K. {0 m" I, t3 Z;;if [trade-record-one-len] of myself > 3
" x3 R8 P0 H- D9 K! u
update-neighbor-total
) Z- T3 ]* N9 \: ?;;
更新邻居节点的数目,在此进行6 K0 b. s2 }8 ]
let i 3
  ?. h( W5 C) ~6 u6 z8 T9 c+ jlet sum-time 0) L4 C% M- G2 |) W: @: t* ^6 [
while[i < [trade-record-one-len] of myself]
( \& `5 H. R& c" k$ s" f- n[
* L# ]& S- L3 vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  ]' g7 q: _; dset i
( x8 M  h' o9 w2 c8 {" V, z1 w8 p( i + 1)
$ y9 X# O& |5 m! \: {) o# }& f
]
) o4 k4 X6 L& ]4 P* r1 Glet j 3
; j5 P3 D  B7 L4 v: hlet sum-money 0* Y$ J+ p- y! l/ _% Y8 c5 T
while[j < [trade-record-one-len] of myself]
6 y; x0 m# q* v[
6 s) Y. m8 L0 P$ e+ ~4 kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)9 C9 r7 k  p3 @; Y) T4 S, F
set j
; x6 [/ c$ g9 Z& o( j + 1)

$ T& l: Q7 p. r* z6 g% G! j], P8 R* \& y' Y: W
let k 3
1 \* I5 c5 c3 M' L. |7 Ylet power 0) b7 D' B+ v5 c% S& c% J! k
let local 05 z& p- `3 v3 {  i4 X
while [k <[trade-record-one-len] of myself]9 P9 ^3 {9 f! ^* q1 P5 n
[3 r" g/ ~) l/ e4 h3 O2 `
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)
6 ^( p4 ~5 o8 t" J" zset k (k + 1)8 X, B" M! I6 ^
]% `" A3 _8 ^+ e* Q) U2 {. S
set [local-reputation] of myself (local)  \$ b  _; |0 ]
end
/ x; r1 Q3 }- `7 W% v7 j  b  |' H' e
to update-neighbor-total
. o1 r  Z/ G5 M( j' w+ P! p  e$ e/ B9 I1 m5 a# a6 u% r" n: O  Z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  q' ~4 B* l( g9 L4 U

+ o6 h* j2 a' o5 {

: k1 t* j$ @( S- S8 V, Pend5 A% ]- _' D3 d% P
2 C. I3 f! o6 A
to update-credibility-ijl
% k4 B9 z3 U! }( G+ k2 n
- t. N! c( a! ?4 K; p;;
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。
( `7 m3 W, V2 I) D6 _let l 0
- R0 b+ {1 u; H1 N$ p% Wwhile[ l < people ]' Y1 d7 ]$ q5 S: O3 a! C
;;
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/ ^: L3 E; R% {+ P
[4 Y) d/ O, S( G
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' Q$ p9 n: R0 h: W" ~% \0 y9 ]2 @if (trade-record-one-j-l-len > 3)
' I+ B( Y  c- v[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-one7 Z- t* w  ^& |; M( _. ^. w0 N1 i
let i 3
; h# S! a% A7 {5 \! Vlet sum-time 0! i: j2 P; R* ^
while[i < trade-record-one-len]
% G, F0 [0 \% v[: [1 U' M0 v: U2 h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' z$ j: v3 ?( A; T2 h1 l8 D5 U* b
set i! W  a9 Z' u: ~
( i + 1)
9 B" \( O9 T7 _& t
], U2 \% [  c/ _
let credibility-i-j-l 0( F" j  N# t6 M* E5 P$ c3 K
;;i
评价(jjl的评价)
  p( j4 k' b: g7 @- B) {# Q0 D4 V: plet j 3; J! G& I7 z7 K
let k 4% N- h9 z$ s) e- k& r+ T) i: S
while[j < trade-record-one-len]
7 C$ `. N/ [# P( L1 F! T  P$ S[
: v. Y1 B2 x- p9 W) J. o+ |while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
8 a+ }, D2 D( \) |9 ]) aset 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). \3 V$ [$ _# F- G( o9 O8 n: K# Y
set j+ p: p& @4 A! k. g+ u# M8 \% x
( j + 1)
& s: W2 |* g/ T& k$ g6 o3 O% D
]+ E, ]6 e- o/ N; O4 Y, b5 |0 u1 T5 o
set [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 ))
3 w5 O) H  B8 [4 h* d& n! ?1 L. P6 M: k6 b+ S* z; h2 {) J
/ X; n# K$ y8 R( w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- Y4 [) U* O. G;;
及时更新il的评价质量的评价6 R7 F5 d% a/ A7 t  ^' m
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% x& ~% f6 e" b4 K3 @- B9 V. Jset l (l + 1)& `1 K; C& }: Z5 m
]# F: q" p$ g" C
end
2 B% k! @3 R& ^% t% R: X8 s& q- F
* f/ T' y7 ^5 P& dto update-credibility-list7 b" A- ^0 p2 q0 R
let i 0
$ K- e- a' [2 c% Pwhile[i < people]
( ^) Y: P' N4 R, }4 p+ D[" H) b! [. \' K* t+ t: m
let j 0% q4 o  n  F1 G
let note 0
3 Y% T. X$ Z8 ]. Wlet k 0
; T. [( [1 W$ Q;;
计作出过评价的邻居节点的数目
! b9 @% Z; k; h; ]  P' r' [while[j < people]
6 O: b' s' B& p  {2 t[( x' |6 j, L- m  r# z
if (item j( [credibility] of turtle (i + 1)) != -1)& }. |' g7 H0 O; v
;;
判断是否给本turtle的评价质量做出过评价的节点! d  u! m7 q5 D  S' Z! V/ L
[set note (note + item j ([credibility]of turtle (i + 1)))" v% |  H+ c4 H0 d
;;*(exp (-(people - 2)))/(people - 2))]

' Y2 `8 }" w. \set k (k + 1)
9 Y% c1 U9 \- Y, @]
- \" q( M, {. E  u/ C7 n  q( sset j (j + 1). M/ y! k) C4 A5 h5 F' Z2 E
]
6 t/ w4 ?! D8 w0 x. ?set note (note *(exp (- (1 / k)))/ k)# l& _$ J: l5 E% |( `. `
set credibility-list (replace-item i credibility-list note)
6 v  ~& M# e. S6 yset i (i + 1)
' O+ h5 _' ^2 j4 G4 p- X]
& o' d2 Y5 _7 q  k9 y& Pend
+ t+ W4 D2 a2 T7 I
( c  R- D  F9 m+ w( Oto update-global-reputation-list2 _- F/ M2 o1 y2 }: S8 @6 t$ C% U
let j 0
# Z# b  f2 k, p3 D/ h1 |3 N/ }# ?# x( T3 Ywhile[j < people]
9 E+ c0 _) r! E4 e+ h[* x! u/ }, B# j5 ]5 G
let new 0( V# R  {+ n0 k7 s0 J, x% j, g- f) q
;;
暂存新的一个全局声誉6 P) I5 ]% `$ p$ d8 Z4 d
let i 0  c- o6 e( S, ?5 A6 E' u
let sum-money 0
& D6 ~. g( ?& O) p9 jlet credibility-money 0
+ G1 }; h' r5 a- U8 b$ Lwhile [i < people]! I2 j- {$ e, s3 Z6 Y& L) c# w
[$ f9 I6 U: w6 e" W
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): N. [. m0 o; X1 n% E3 s: _( h0 y5 R8 G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 F" b4 h- a. u) v
set i (i + 1)
3 l4 y; z; t1 H& u]
( I/ p/ V9 {: ~* ?: u4 b, |let k 0
) p" Z) L7 k+ s- s' G/ ~let new1 07 ^$ r, p) _' Q4 Z2 ]" b) _
while [k < people]# ]/ @) n. b+ D* W' |* j3 {
[- v! n2 \" n2 d0 @9 B3 E
set 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)
. M% C- p7 E. R3 L' m6 Hset k (k + 1)! r) R7 n2 a) |2 ]4 u" z5 S) J
]  [% R7 F/ U4 i! [' L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' S/ o( |6 w  ]  w
set global-reputation-list (replace-item j global-reputation-list new)/ g$ |" @9 F4 s9 M7 b
set j (j + 1)
" U& X/ t$ i( t5 E6 G8 X8 ]- W]
2 H4 H; T" w9 b: `end3 j* n) [4 Y. T5 }5 W( s

7 `9 g* Q2 ~4 T- z6 m- ?1 L7 P. A3 k6 e- W3 s5 g+ p( @3 h

1 o+ x! \" M" i- l- xto get-color
) D' m# s! |' n9 @. q) M, {9 J$ \. g; G& N: \; @: n
set color blue
, x% L$ P4 F( H* H8 P7 B( m
end
7 u! m, Z9 |' |. e9 ~: p
+ S/ e' F# k/ Sto poll-class
& s) w, f8 u; j% zend
" R) F/ Q. V+ s- N! s  _( R! B
: |, h, s7 @$ i: T8 M1 rto setup-plot1# [+ n# G5 n! W; I" i
. x: |; }+ J; D
set-current-plot "Trends-of-Local-reputation"

4 T3 F. R8 A" k; `9 }
7 C3 y  |4 k+ R  E( Dset-plot-x-range 0 xmax

8 b0 a" G* G9 h7 v+ ?) Q& h" K
) d* b/ [! g2 W# lset-plot-y-range 0.0 ymax

* v8 U+ B, f1 e+ h& Z! @end
4 T& _; _- K& c, m8 T8 A- d: ?9 N" Y/ O# _3 f; x- A3 g* q3 m: M
to setup-plot2
$ [/ V5 |: J  x1 F' V2 m& j0 b4 F! `; Z. K
set-current-plot "Trends-of-global-reputation"
8 l9 |( J* F- O( A) `, w. V, b
$ c: G/ l% a. n3 m
set-plot-x-range 0 xmax
7 A. x; \6 G$ k! o! s& }. [: L
* Z0 _9 N5 h2 b  O  Z$ I
set-plot-y-range 0.0 ymax

* V9 o. z5 @* }4 Hend* a" m- y* U+ `% h8 Q' e

$ e' w. j; _- H4 E$ c# X! e+ Tto setup-plot3+ e: n; _! v/ K7 ]- E5 Y0 C

6 N/ V" n: }$ eset-current-plot "Trends-of-credibility"
( k+ B# m& m  k/ ~
9 ~% ~3 e  h# t( p! r- K0 \6 X
set-plot-x-range 0 xmax
( Q6 {1 Y) L' J. z( k$ |$ L* d

) b$ r" t. g  m1 m% ?7 \2 c! M( y% o" Nset-plot-y-range 0.0 ymax

8 m/ b; L7 Y1 c& j; gend
6 R; N" e& i' \9 K! A" k' _$ j; T- E( x* u" `
to do-plots( n  A8 D# H" f+ b  l, @
set-current-plot "Trends-of-Local-reputation"
- n, K' K/ ?6 C' |/ S7 t/ W% _set-current-plot-pen "Honest service"% L6 s( d. _; ~. f2 n3 x
end8 N8 u- H! ?, b& y1 e3 A0 e
7 F. r, d- Z: j! m" @) Y. u2 l
[ 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.3 {/ W) C3 T2 J, ~
4 \$ ?) c4 M/ Z3 J( r
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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