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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:0 ~9 q3 K+ O7 K8 m& j% }# [' v9 U
to do-business # f/ q8 X6 t; _4 B) D- K
rt random 3603 ~/ W$ p8 s, p, \
fd 17 d0 p8 t+ ~) a1 V
ifelse(other turtles-here != nobody)[; K& B1 X$ J; L3 ~
   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.
* `8 I$ v; U( L- t7 b4 w- z; _   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( Q% m4 E% t; _. ?& J( d  K% L   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ O& [* V/ H8 I4 N2 a
   set [trade-record-one-len] of self length [trade-record-one] of self
3 d% ]' L( N" Y6 F5 m( f   set trade-record-current( list (timer) (random money-upper-limit))# y& B  k+ x& Q
. H6 ]$ z% U: p6 d0 [
问题的提示如下:
' G4 R9 F5 k! V  A6 v- g
! F1 H3 [. r/ b6 X8 o' Ierror while turtle 50 running OF in procedure DO-BUSINESS
; r$ A4 K$ W! e# i1 l  called by procedure GO* ?1 n2 k- \1 {6 r8 R' ]$ i
OF expected input to be a turtle agentset or turtle but got NOBODY instead." W( P) n% |0 o% @
(halted running of go)) `, m0 Z9 J3 I: k
: M$ k& v6 q" L
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~~, s8 o2 u- C2 K, B1 H9 u9 j0 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$ v) l) m8 Y/ G! L
globals[
0 Y8 z0 A" P0 `) W! v" Gxmax1 j& t, E: B% a% c0 S# I' t* ^
ymax$ ~* C4 G) E7 @; B- k/ a
global-reputation-list3 f1 U# `# I- h5 w  b  T

( ~  r' Z9 W! A6 j2 U;;
每一个turtle的全局声誉都存在此LIST& ?% ^1 l6 \. N) \5 A; Y
credibility-list9 H. Q9 O% C0 {5 n3 ]/ S( v
;;
每一个turtle的评价可信度
* t5 r: j7 g, P% ]# C+ Rhonest-service$ W. z. p$ z! f9 v; J& ^- R4 O
unhonest-service
$ G, O, s$ N) B% }' Qoscillation
( k  A3 q- K' b: i( |4 Trand-dynamic/ t- k9 z# ?' ?. Z9 `
]
! S9 ?# W5 K1 u/ e" g: g1 K0 u  }0 L( ?
turtles-own[
( ^0 W' K0 _; q, |# P; }trade-record-all+ [% v5 f. ?" `3 F) z# v  O# `
;;a list of lists,
trade-record-one组成
& P  M1 m7 K6 x3 u" w( ftrade-record-one
  G/ e( b8 }+ L. B( O3 N% B8 K- F) B7 d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ B3 x3 d7 C5 @1 R/ m
5 s1 }$ e! K. c. C7 {;;[
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]]% t, u  u, f! r3 ]0 y
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]
: F( B2 ]. Y' ^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list6 d. E* ]. }( w/ L  ^7 L7 T) S
neighbor-total; t3 v8 V* n# u1 k
;;
记录该turtle的邻居节点的数目
* O, l. n0 w- x! xtrade-time
+ `/ c# U$ L* \) u3 k/ {; u- j;;
当前发生交易的turtle的交易时间
  ?7 c5 n! O7 Y; rappraise-give
* {/ e/ b3 S! u3 a" w7 ~) p;;
当前发生交易时给出的评价, D5 Y$ E- N+ \6 _
appraise-receive
1 T- S& u  q8 M8 W/ `3 }& R9 Q: h) y" k;;
当前发生交易时收到的评价; }4 i& u  q3 o$ d
appraise-time: ^) ~& }4 p& H) W0 n
;;
当前发生交易时的评价时间: W7 A: C5 K/ f  J0 b( T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% b% I& ?" g9 v1 N5 Strade-times-total
5 k, G2 W6 k2 Q2 `; l;;
与当前turtle的交易总次数7 q) `1 }/ A" N: a1 Y
trade-money-total
' b0 |+ {6 W* J0 P; W. u;;
与当前turtle的交易总金额' D7 T2 a7 j5 |: Y, \( e: B
local-reputation
. v& ]- c( M6 {3 L7 d( `4 A* vglobal-reputation3 s; C2 d$ F& P# D$ C
credibility
4 O4 U2 v1 @) y) ?7 j2 G0 Y* |; t;;
评价可信度,每次交易后都需要更新( b# X) h4 J2 N' D
credibility-all
- C6 X, W7 {9 d0 C% X) |;;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0 J: v, H3 @/ Y+ b

- C1 \; r3 G) z* M4 n7 z;;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
4 x3 @# v4 ]3 l4 hcredibility-one1 C+ M! i. b( ]0 `0 m: `: H
;;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people) y* _4 P) g; {7 v9 Y
global-proportion+ D4 S/ i& c. L2 h
customer
  H' s- r! k% Q# S# x0 z+ Tcustomer-no
, X6 R6 u* E% R8 N3 N- etrust-ok: p  A% F" m) H
trade-record-one-len;;trade-record-one的长度; e/ D+ ?8 l. }1 c/ v$ q' \
]# N7 A$ m/ @% U/ V8 W0 C

5 D  H. b, x% J- L;;setup procedure
$ U' c* H7 X) q. I* ?7 V
" t# ^( n$ s1 vto setup
0 u: M/ I% G2 o' [2 r" V. G0 Y% p! x5 u3 `+ m
ca
5 j* u; L5 m) Q8 W" ^/ N' k
3 w/ D4 e. h% G4 L3 d5 w  D* K
initialize-settings

; T5 X" f" v6 k) Z! H$ l- [# p" U& z5 a; {
crt people [setup-turtles]

6 h9 ?8 d  }+ }7 x6 U, b: g6 u/ Z" I
reset-timer
& q0 z0 G: p. P' X! [

9 Y/ f6 X! S! r0 u) _poll-class

# V' R2 s) `8 l/ o
. H1 ^, g: M; J% U7 H& J3 o( r1 csetup-plots
/ U- f3 d8 V* Z8 k6 n- w( ^' M2 {0 ?; W

. ?6 r) k: g& a7 X. r4 Fdo-plots
# N1 P* W7 H. Y: w6 F' h& B
end
/ g( f. [8 z0 T7 F
; c$ j# X1 d% T1 B$ \3 ~- L% d" mto initialize-settings/ R+ F/ K/ L" T2 c8 V

. q& I$ r) C. r! Hset global-reputation-list []
9 W+ p$ P  k+ T1 Q; a3 @
: J' d3 {: K! R& V8 I0 a5 I, ]
set credibility-list n-values people [0.5]

# t' t9 Q# W, a3 G8 ~) v
1 T6 ?$ J- k0 ?% |, c& F/ d6 aset honest-service 0

8 j: H$ E4 V* K6 U
& L: v! k/ t7 m" g$ t0 T. j' p; Sset unhonest-service 0
( j) o$ |. Z# T) ~# w5 B5 K
# u, e& @4 F9 `" U9 l
set oscillation 0

0 e  F: W5 ?+ L5 w7 z& B) e$ q& y1 b5 K
set rand-dynamic 0

' a8 A# o3 F2 q8 q: ]end/ |. @- T3 m5 t4 T$ x8 G2 s  ?
1 o- ]- @  h# M4 T$ G
to setup-turtles 2 A9 G4 Z- p& F# z3 f4 j
set shape "person"4 Z% t2 P7 X( h* g7 [
setxy random-xcor random-ycor
3 G9 W. _+ K3 H+ H3 V" |2 b( ~& dset trade-record-one []
+ j# v/ D; i* {& U1 N+ q% p$ P

# w7 L6 U3 J2 D  o0 ~set trade-record-all n-values people [(list (? + 1) 0 0)]
; k8 ^* N1 R0 D/ Q& f: V9 f# c4 g" N
4 J) {8 \/ a/ X: L) b2 M) {
set trade-record-current []) f; ?( s* Q5 E  i3 G, @% O/ D
set credibility-receive []
7 ~  O- v3 k& J( G# C( xset local-reputation 0.5
2 v* s, W2 P9 [# k" Z8 ^; o& X: {set neighbor-total 0
8 {/ B, A5 j& eset trade-times-total 0
0 Z" L. L2 x4 m$ }! bset trade-money-total 0. p) _6 c- t2 r
set customer nobody
2 T1 t) G" F! K/ I1 a0 Q% u! lset credibility-all n-values people [creat-credibility]. X' [& w/ z: }4 B
set credibility n-values people [-1]
! a6 w& `- D( |, L$ s# gget-color
) d: ^/ b; ]+ S$ ~$ @4 j4 h# e" w
$ G# r8 \+ B# S" P  T
end
! ^0 O: g* n$ z( L  U1 \/ e  Y
5 p6 v9 o1 O+ N8 k  e0 Wto-report creat-credibility8 k) ]( Z. ?- n8 B. i
report n-values people [0.5]1 e" T, A6 r% Y/ X4 p1 R, b# |
end
7 B  W6 X8 @& L) Z3 I- m$ G8 z
, V7 B- r! }4 v& _to setup-plots# c0 O9 s; L3 B, j9 Q/ R& c! i" g
( P, X4 h. T# I+ @% c, e
set xmax 30
  a7 w  b5 s6 `& a$ O

0 ~* }, [" _) x: w% v- Cset ymax 1.0

  u6 C4 j' Y) I$ P4 N7 {, y! }# N: ^( a4 f
clear-all-plots

0 C0 u- `2 n8 C0 q/ ?
! z/ o: y$ x' e) s: p0 |( n$ ysetup-plot1

. B+ m" @' \7 d+ \
; f$ {& v8 J" a8 m! O- i$ K3 T$ }+ v* {setup-plot2

4 r% U5 E4 U" q4 ]: _# Y* a7 P  S
# x0 v0 V0 `; v& T3 ~setup-plot3
# ]# U, v1 I1 }. |( Y9 x
end( u6 D, m7 b4 Y1 _/ n
! Q! J# x$ B# @' I/ \0 r
;;run time procedures
" Q! |% w. I' K; q+ z' V' B7 a+ u" r, l
  D( T+ J9 g4 `to go! v4 F* D! ~/ |+ y; g* ~; H( f
. C! D/ V6 j4 @' C
ask turtles [do-business]
, ]. h% o1 J3 L* u; n+ s
end
$ b; n$ Y* ~( u" o: H) G$ I# K: T. I' y+ @/ G9 X1 Z0 u, J
to do-business
$ i( E. V0 |- p. V+ L

# I4 ?: t( [5 _
) ~3 h  k2 g. |rt random 360
2 c: j1 z9 ^/ d% ^4 a2 T* H
3 h  U4 S4 G7 E) S( \, G4 p
fd 1

1 J$ N$ }$ I8 d4 g3 F' ^6 g( r" I, \% Z4 U/ p( h% o
ifelse(other turtles-here != nobody)[

3 `; s  ^3 u) E" d& V6 Q  w2 U# y' k
  U+ Z. f" w- ~3 i3 Xset customer one-of other turtles-here
8 K5 A/ O4 W5 B3 }, C1 Y% m

3 |! L: P* t% c# {. `) r: G) z;; set [customer] of customer myself
: K: [& w' T; B: Z8 f, q6 B

7 D3 k4 n$ a* z+ P) d0 C8 K2 Dset [trade-record-one] of self item (([who] of customer) - 1)
9 a+ ?  d/ l2 J9 ^2 ~[trade-record-all]of self( Z) `  o$ S( ]; B; J# |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ E& b  `( o( v4 x8 J  ~4 \

( Q! g% f$ M' N. ]9 |& ]set [trade-record-one] of customer item (([who] of self) - 1)
% r4 \2 B/ _6 A, q, n4 w[trade-record-all]of customer

+ o- J& L' R1 k  h" O
, _0 ~( X+ ]4 ]) Hset [trade-record-one-len] of self length [trade-record-one] of self
* m* D9 Y7 F& [7 \
1 B3 C8 N" `2 V" O$ B
set trade-record-current( list (timer) (random money-upper-limit))
' n- K2 F; L3 ]# v3 q2 C5 M
* b( Q# N! n, O0 c  k/ S0 O
ask self [do-trust]
! {3 p7 I7 y+ R) k;;
先求ij的信任度3 {" R$ a( T# o6 @, }9 d
; p9 c9 P9 `4 ]
if ([trust-ok] of self); l- n  {, ?- g
;;
根据ij的信任度来决定是否与j进行交易[& p/ e  I4 ^/ m+ O3 [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- }8 B- d1 F, y, R8 ^/ c

) {7 r3 `$ o: J( x& S[
1 ]2 a* V$ h7 O% |5 E/ ?& n
% V7 n8 }$ l. ~# r- i$ L6 x# h
do-trade

6 L2 \6 C! b2 ^1 Z0 D( P# t# a; P
# \# e2 Z  A9 }: Rupdate-credibility-ijl
. ^: o" X# P6 v3 s
+ I7 [  K4 L. z5 |2 H
update-credibility-list' C& r! J7 \, ~* j) R, @; k3 i

9 O9 x" k1 I& w3 P- ?; k  }- H' H/ v; f. J+ r
update-global-reputation-list
3 E5 }: I5 i8 M) X$ ]3 z+ {) `

5 u- F. G( J# T! ?7 {7 ]2 Ppoll-class

( N9 Y; ~8 E% H: E3 g7 b8 [) \; o  a$ A8 `. M
get-color
$ l+ f8 Y$ U2 U( h3 _" G( ?0 m1 k5 P

# T; e% v' w- k5 J3 D]]5 D9 o2 K; W: a9 A& ]2 n, Z

! L3 e9 [" @3 D: j# N. ?;;
如果所得的信任度满足条件,则进行交易9 C8 }0 B+ z4 M9 m. x

2 l' c7 t3 b# c9 c, Z) X) v[
  l! n6 n0 {7 B) u2 \+ u# c
/ i& y, @& o0 O/ p1 l! ?
rt random 360

# A7 u. w4 y+ r# Z/ J- p
$ D5 m3 Z; u% [" u) x, F, Kfd 1

; T. T6 c1 L. m9 P4 ?# Y8 O" l: p' S+ p
! K8 B, \9 O% d2 g, F]

) f; F" g1 F4 H, _4 \# N3 r; f9 [
end

% F" }  ^8 O6 W, T2 N6 o; _2 r
5 C$ A- L0 H+ B- i9 O4 Bto do-trust - r1 b% T/ _$ ^4 ^
set trust-ok False
# [8 S  l- l* u& G% R; J/ F: Y9 u8 d* [" k1 f' y+ Q$ c* |, L
" h4 t& l! V9 ?9 G) K; k0 U# k
let max-trade-times 0
' i& K' h. O6 O2 K' F# }/ t: `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  r$ r& Y. o' c. Y6 V* |let max-trade-money 0
; v- r, M7 o8 T! x' e/ L( I  fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" |3 x: \7 k& V  M( x8 D, P7 d( Clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) f+ ~7 J6 T' X* p( H- `
3 W( Y" T: E: R. r
( s- [( j$ I! O
get-global-proportion
' D0 j# Y5 N2 `  m4 K1 rlet trust-value
+ N/ i- G) ?2 O4 {& J) olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
& s, v- h5 X; [
if(trust-value > trade-trust-value)
1 p3 J4 q: s3 W[set trust-ok true]- ^; ]. ^" {& m, U' _
end- n- J7 E- q$ R# ]

8 y! q# @4 H, }2 M- X: eto get-global-proportion
/ q- k4 {' ~0 A, k& K( [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" z  r9 `* m; D/ P
[set global-proportion 0]" R! w' o4 Y: H# _/ g! o: M
[let i 0
! O1 g2 ~2 A; ~3 t# e: R7 A6 hlet sum-money 09 X7 c0 E- o0 N  y+ r
while[ i < people]
& ^" H: K! \' U$ w. H% y9 \[: R( y; o5 k! W% V
if( length (item i# r- ]! M! s3 E( s4 p
[trade-record-all] of customer) > 3 )
/ d2 W! i+ Q; q9 w  Q  E  r
[4 s) m2 g0 |/ b1 P
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  V" e- ]: i5 m8 V+ g
]
' v; y5 ^8 N; N: o0 e& F]( r! l; ^7 ?& p0 G
let j 08 Q; H1 k9 ^, y- ]
let note 0: T5 Z6 i# X* S
while[ j < people]
) s1 o( ]% p; W[0 z! Q* E: P, [7 j
if( length (item i
( J+ z9 d- X1 [: a[trade-record-all] of customer) > 3 )
! {0 N3 f  h1 ?+ O7 o/ g2 F7 T
[
, Z" Z( ~1 A8 W! o1 @/ |& Gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* ~% R# N1 ?3 |) s5 d. G7 \5 i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ B8 U5 F( d* S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 H8 Z- J" g2 v$ f
]
/ a* B" I. M1 t- D" x]
! e+ E1 i, K6 ^" ^& Aset global-proportion note$ B) V3 q# V& P) n) ^5 s8 e: _/ k  a
]0 I! P; j! e4 ]; ]( i% w1 _7 [
end
) Q, E& P5 t3 k: k3 Q$ j3 O0 ~* y, f4 j
to do-trade' F0 g' z4 l6 h9 M1 U! |- u
;;
这个过程实际上是给双方作出评价的过程* a, o' n( L# o+ l0 i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! }+ Z* k# U+ nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. x- T3 q+ B* T; t& ?# l
set trade-record-current lput(timer) trade-record-current% b7 E% j3 ]2 h, [0 D- b
;;
评价时间
  C- T+ i0 J4 b  _& `' gask myself [! w& Q2 N9 o2 M) Y7 i" j
update-local-reputation% d. T. Z, r  o- d
set trade-record-current lput([local-reputation] of myself) trade-record-current1 z+ r. u5 z- F( a
]
  T1 v7 |- J' D3 n; Aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
: b7 a/ S6 z3 E3 h;;
将此次交易的记录加入到trade-record-one5 h: j1 n: ]: {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 S! _  F: R1 ^1 W. Klet note (item 2 trade-record-current )
# d2 {& q5 K& p. Nset trade-record-current" w" n, ~& ^+ x8 y/ }
(replace-item 2 trade-record-current (item 3 trade-record-current))

1 R& A! h  `5 n+ u6 Gset trade-record-current/ K8 T9 r& ]" `8 b2 e. O
(replace-item 3 trade-record-current note); j& L+ G" }/ z5 N; V

3 x6 }, b* j7 T5 r

/ G5 h9 V& N+ _& H/ Y3 Yask customer [
& Z3 q, ~0 V! N3 i* o+ Gupdate-local-reputation) ~) |) Z, z2 x" y
set trade-record-current
; N1 Q% i2 F. G1 r1 w5 ?8 k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ A) D2 j+ W/ f2 i( M]
. Q& S1 y. x3 y
* B) q: f5 c( u. O5 f# z

& s0 |2 o1 s  \- `: h- bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. w5 ?( Y7 U9 B# G; z, n: n
) v) {. {% p* ^" x+ Z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' ^- I3 v6 M. N* ~5 R, D2 p( w
;;
将此次交易的记录加入到customertrade-record-all
+ [! ~; T1 |6 i- [% d5 f( bend* b! k1 P0 T0 a( ^1 O/ m

3 x- i' k  |2 u' @" p! ^to update-local-reputation
) R; Y. t6 j# Vset [trade-record-one-len] of myself length [trade-record-one] of myself7 P3 I) A& k  B+ }
1 u5 z% J# ^  C9 c
) o+ Z* _# o/ K% `# m9 t
;;if [trade-record-one-len] of myself > 3
7 y0 W& U' o' D! C" L5 J' ]
update-neighbor-total
" |8 @  Y" j) N; E2 O;;
更新邻居节点的数目,在此进行! j, n; y  r9 N. Q8 V" {: Y  d! z
let i 3
0 ~0 Q6 _& D) N( U. I& Blet sum-time 09 x5 v& I4 u1 p) X, ~+ t5 Q3 q9 ~  L
while[i < [trade-record-one-len] of myself]
1 M8 V+ e) m- Q* _& r  ~+ r[
  }$ ^& |1 x7 D9 Z. i& u' aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( f- C; c7 b! m+ j; \* [* Q, ^
set i
5 p, S; ?, S) ?( i + 1)
+ b! n0 |8 h* O5 b+ F
]
; M3 _6 S- e  ylet j 3  ?# |# `! g% P& X' g
let sum-money 0
+ {3 F6 Q: [; Z7 U1 e5 Q5 w* Cwhile[j < [trade-record-one-len] of myself]
3 f. p  X% s- i& I  N[6 k4 l; U, Z' }
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 f) j4 ~  `* t, u/ w- i7 i
set j
( V  s$ |8 Y2 d9 L( j + 1)

7 y$ L3 a8 U0 w& S  w/ `! v7 y]2 _( {/ h6 t2 c$ A3 u
let k 3
; j6 r# x; s: t$ w, j. Ulet power 0
3 X7 y, q* ]% w; I" I) a  flet local 0
$ A- W+ Z1 X' r* {8 bwhile [k <[trade-record-one-len] of myself]+ c* p# e/ ?7 z2 D! Y* i
[- A' k8 L0 ?6 o6 p
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 A+ e$ G3 c+ `3 R; t
set k (k + 1)
7 f. Z; C' {2 m- y7 n/ w]' p. l( C0 [: m+ W  ~8 u
set [local-reputation] of myself (local)
: @, D$ Q0 m( t( ?end
( a; L, ]* {% e* l+ o) E7 R  e8 O* d2 X9 R
to update-neighbor-total! x4 ]/ n8 |- _7 i) K6 V

% M, }# k6 i2 F* W, R! E3 xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. u* I( d5 f: E5 \7 \6 Z
0 x8 T/ Y7 \  m$ I) |; r' y+ d, d

- `$ F1 [8 M6 ~" ~9 q  dend8 A" F. `9 C3 Q1 K8 L

: H- Z+ S& M/ v7 k. Qto update-credibility-ijl
7 C$ f) a1 k  U6 i$ j2 m
+ K8 f6 [4 M+ X& b;;
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。8 |+ O- ^" ?; t
let l 01 j( W7 |6 X6 d: Q4 w( y! u
while[ l < people ]2 ~  j/ \* {2 h# F, m' s; }
;;
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$ R% t# R2 f7 K# G
[9 Y3 S, G* c$ S: N6 n' V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( D; y. L+ S6 Z. L" lif (trade-record-one-j-l-len > 3)# F+ ]+ K+ D# l( {
[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
% K  k# B; H9 `, x/ a2 P0 o6 ~let i 36 B$ N- O9 y7 ^
let sum-time 0
) I  G3 I3 l( k& Xwhile[i < trade-record-one-len]
$ ?0 R) L8 }# p5 u" ?[( k) j4 b5 c/ u+ g& I
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 S; G; P7 a1 ~$ xset i  K  K% G9 Y1 x) I
( i + 1)
+ g" g/ q* n" m; D
]
& x$ X  \# L4 hlet credibility-i-j-l 0
/ N' s- z. y# L: }- {& ^) e% e; _;;i
评价(jjl的评价)/ L/ f) u8 W& R% f) @6 c& W
let j 3
4 p& ?9 e: K: M% Klet k 4
3 T6 _8 a- r: L% M# S6 {0 u1 X4 vwhile[j < trade-record-one-len]6 p+ T) V4 h) a- g% G" w/ u
[
" ^4 T+ `2 w( `0 j' t, R) B2 E: \9 ?0 nwhile [((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
" ~/ q4 p/ b4 v8 y, W* Oset 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)5 e; a1 m  ?+ J" J+ q
set j3 t" u2 L3 {' \9 M  Z9 b
( j + 1)
# L8 j, h: C  U, ^8 f
]
% q7 F) B# C( w2 L9 Jset [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 ))  S9 P) r! O* }- B& H$ d+ f
4 S3 S1 s0 ]! r1 ^3 y
& D, X/ S+ z6 ^8 O, G! W
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 Q: i( v5 J8 h6 `( R;;
及时更新il的评价质量的评价
  t+ u7 E+ M0 O) Y$ ^9 S8 c# Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 ^$ S5 d" j1 n) C2 q' B2 S
set l (l + 1)* B. ]3 ^- Z, T1 L) g; F: a( Q
]
+ b0 W' H, \* Cend
# \/ ~; E$ _. b6 J' Z$ g1 M  q1 K: A7 F! G. ^: p
to update-credibility-list
1 F6 N, N1 X' K' T* j6 t) glet i 0
5 @& q: T$ ?. y  cwhile[i < people]" u/ U8 q& `7 U. x$ E( _7 T  Q5 k# L
[
; K& v. \8 [) M% X8 blet j 08 z+ f1 o3 U" R) V/ A) x; o
let note 0
; |: [. K; L2 K. ^9 R6 x/ ]6 Jlet k 08 t8 \! l6 b, z) i* z; O  |+ z
;;
计作出过评价的邻居节点的数目  [9 @( \0 |$ U8 A5 m- ^6 ?
while[j < people]
0 U) H" i7 [( y+ }[
5 N) t+ b, C8 b3 n. G  X8 Sif (item j( [credibility] of turtle (i + 1)) != -1)
/ i5 q' U; @! y! p. V& t! f* M;;
判断是否给本turtle的评价质量做出过评价的节点
; n' c9 N0 }" [7 G9 ^7 x* t. ~6 Q. H[set note (note + item j ([credibility]of turtle (i + 1)))
* _  F0 l5 E/ y1 `;;*(exp (-(people - 2)))/(people - 2))]
) V# i4 j7 u- x' P
set k (k + 1)
3 T4 y/ U3 [0 f, O]4 q9 ^' P1 N# F9 c: B1 G: q" O
set j (j + 1)
8 }$ M1 u. ^4 u) O8 f1 T]
: C+ M& @3 B$ u$ S- l6 }0 U: Zset note (note *(exp (- (1 / k)))/ k). n+ g% I8 F; b+ R1 k6 T
set credibility-list (replace-item i credibility-list note). k% A3 A; p; w
set i (i + 1)
9 Y9 z0 e2 o$ e, B+ i4 ^]
. K! j9 `2 u1 f1 Y, V: ]end; `) Q* I7 _- F4 s! e4 A( A" L9 s

8 c7 Z9 t* u0 X. G' \to update-global-reputation-list: j4 e8 M, ?0 c* M. W% l
let j 0" ]2 ~; K" D0 \6 U8 `
while[j < people]
8 T; J% _% i/ O[/ O4 J/ H9 M: a6 d
let new 03 s$ ]# ^0 t3 v4 U
;;
暂存新的一个全局声誉* l# M) o( q& b7 W7 a, e. y: w0 _. r
let i 0( |# c4 @- `# W: c0 ?( G# v
let sum-money 0
" {/ H/ U7 O4 W5 V; Hlet credibility-money 0
9 N; V. q% Y! g' X2 c" t& Rwhile [i < people]
) M+ |2 @* m( B2 `0 O$ e3 g[
0 H( S. G7 W2 |: N# zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) H* J7 Q7 ?) ]" W  Z% T  @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 _  u: C3 ^8 [2 F# V: a2 eset i (i + 1)5 p/ n5 K: Q. A' S! F2 ~( B
]
1 ^/ c6 n4 j& N* J  s; q/ nlet k 0
3 O. l0 Y: Q( R  D1 X/ Q1 a/ xlet new1 0, s1 D! i) Y. m
while [k < people]
; L7 V3 x6 c9 h[3 y- T5 W0 D* [% y7 L
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)# ?6 P* O/ s7 c7 i
set k (k + 1)2 m9 y2 C0 X* h* ?+ G9 Z
]
6 k# j2 s, K4 K$ A9 N& T' Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 {' x$ O! F3 T$ _+ F% Z& @
set global-reputation-list (replace-item j global-reputation-list new)
3 g: i7 `; v2 U! sset j (j + 1)2 u; V/ u4 t4 \5 c% `# T8 Q9 Y
]  G- q+ k) A9 N6 {4 U7 n
end
6 K! y# B8 Z% _& ]8 v7 r1 H  E6 F" \( \+ ?

! L% p7 j4 [, L8 D5 I0 W& K( ?
3 S$ E. U: ^, rto get-color
7 B3 |6 {4 ^# \! _5 L& R% D% B0 x; a. u# M
set color blue
0 A( ?- f& N0 c* c5 d) i1 p; U
end" F* {) @$ ]; ]$ J* {$ k- d9 q4 i

+ K/ b' ^! V3 H$ m4 s; Bto poll-class
& j* u- Z$ a3 T" U( R, F# C* f$ }end
8 ~0 ~0 p6 [' T  i* h" t# A/ q  h
% H" R( D8 }; [2 c3 G, Mto setup-plot1
, o' w7 p) `+ ~8 _; e
7 n/ d  ^$ ^3 F  A& C/ ]set-current-plot "Trends-of-Local-reputation"
1 [( c5 E! [$ u
; Z3 o5 g# m- @4 ?; \
set-plot-x-range 0 xmax

- D: S' M) ^$ h
* C+ x" I. F& P/ e$ D' ~  g5 N' S8 ]set-plot-y-range 0.0 ymax
% a0 J' {4 L' f  Y" a: N
end8 C/ k! b* W0 n6 K/ V9 ^
+ v* R5 W' P2 }, N
to setup-plot2
0 V( a4 n* f' q" x) E4 m3 J) t; b: n7 f* @- |- J1 N
set-current-plot "Trends-of-global-reputation"

1 L8 y& O& w$ h  u' W! I! R5 j$ H5 Y& L6 C
set-plot-x-range 0 xmax
0 [+ s0 F: R/ a, s; j1 w# w

  x# U8 Q' g4 d) `* \( yset-plot-y-range 0.0 ymax

- T! r! w( b6 Q: gend/ {4 L% @2 g& J9 E8 d' a
/ O# P3 X3 y+ x
to setup-plot3
' ~- H# x7 A  U3 m% o8 q( ^- H9 }5 ?; K) P. a) X4 C5 g$ y% Z- H3 W
set-current-plot "Trends-of-credibility"

% u- Z, e' C* h) N/ e- E+ n
1 H0 c2 R' k8 Y3 E8 c. d* z5 fset-plot-x-range 0 xmax
, D5 I) B3 Q  h5 @% u! N
" y( k7 a2 F" J
set-plot-y-range 0.0 ymax
( L) f+ {/ Z- O: t- Y6 z: e( r
end
: E' t) ~8 Y! b; u& i2 b
3 x' M8 F/ v6 g; Y4 R9 qto do-plots
$ J' Z& \3 z7 R5 L& `set-current-plot "Trends-of-Local-reputation"" s9 c" h( I8 ~. E7 S/ I. K
set-current-plot-pen "Honest service"
% b: ~5 d, P8 i* Aend
! p6 a2 C: ]8 }- |- ?3 V& J# V3 r8 Q2 Y8 r( Z
[ 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.- T. y9 i, l  @8 c: d" M/ `

' V& c' U, D' j! W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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